Archive for the Cardiff Category

R.I.P. Jon Davies

Posted in Biographical, Cardiff, The Universe and Stuff on December 1, 2021 by telescoper

Once again I find myself having to pass on some bad news. I was shocked and saddened last night to hear of the death of former colleague at Cardiff University, astronomer Prof. Jonathan Davies (shown left).  I understand he had been ill for some time, but had preferred to keep his illness private.

Jon followed an interesting route into astronomy. He left school at 16 to become an apprentice car mechanic and did a few other jobs before deciding to study for a degree in Physics at the University of Bristol in 1986, following that up with a PhD at Cardiff University where he spent the rest of his academic career teaching and doing research in extragalactic astronomy.

Jon’s main research interests involved low surface brightness galaxies and cosmic dust which he studied using observations at a range of wavelengths, using radio and infra-red as well as optical facilities.

Jon was always helpful and supportive to other staff in the School of Physics & Astronomy, especially new arrivals. For example, when I was arrived in Cardiff in 2007 I inherited a part of a module from Jon (the “Nuclear” part of “Nuclear and Particle Physics”) and he was very helpful in getting me started on it. I remember also having interesting discussions with him about the physics of the hyperfine transition in atomic hydrogen which produces the 21cm much exploited by astronomers but for some reason not covered in much detail by many quantum mechanics texts.

Jon Davies was a fine colleague and an excellent astronomer who will be greatly missed in Cardiff and beyond. I send my heartfelt condolences to his wife Anne and their family on their loss.


Back to the Veggie Box

Posted in Biographical, Cardiff, Maynooth on September 9, 2021 by telescoper

Still life with vegetables

Since I’ve now been reunited with my kitchenware, cooking utensils and whatnot I thought I’d try to sort out a routine that enables me to eat a bit more adventurously and healthily. I’ve been a bit lazy in that regard over the last few years.

Many years ago when I lived in Nottingham I decided on a plan to increase the quantity and quality of the vegetables I was eating by ordering a weekly box  from an organic supplier. The one I picked there was called River Nene who provided very good stuff all year around. When I moved to Cardiff I had to cancel the arrangement, and I remained predominantly inorganic while I was renting a flat there. When I finally managed to buy a new house and move in, though, I looked to reestablish the regular deliveries. I was pleased to find a company called River Ford, which is kind of affiliated to River Nene, and which undertook deliveries of organic produce in the Cardiff area. I kept that up until I moved to Sussex. I did resume for a while when I returned to Cardiff in 2016 but the company changed the delivery arrangements suddenly and without telling me and I couldn’t use them anymore.

Anyway, I found a company called HarvestDay that provides a similar service here in Ireland that delivers fresh, seasonal organic vegetables direct from the farm to the customer. I decided to place a trial order to check them out before placing a regular order. The first box came this morning, delivered by a nice young man called Josh, and I am very pleased with it. Among other things there was a squash, Calabrese broccoli, spring onions and Cavolo Nero as shown in the picture.

There are several reasons why I choose to get my vegetables delivered this way.

First and foremost, organically grown vegetables fresh from the farm definitely taste far nicer than the bland varieties carried by most mainstream suppliers, including both supermarkets and local greengrocers. Once you’ve tasted how ‘carrotty’ a carrot should be you’ll never want to eat one of those supermarket ones that look too orange to be true and have no flavour at all.  This applies not just to carrots but to most vegetables: fresh organic ones are so much better.

Some supermarkets do carry organic ranges but the prices are usually astronomical, and they are often shipped in from all around the world. That brings me to the second point which is that all (or virtually all) the vegetables I get in my weekly box are grown locally. They’re correspondingly fresh and the environmental impact of bulk transportation is also lessened.

Third, the nature of the scheme is that all the vegetables are seasonal. I think it’s quite sad that people have largely lost respect for the seasons by virtue of the fact that you can get strawberries all year around in supermarkets. I think it’s good to celebrate the natural cycle of things by eating  the correct food when it happens to be ready. You wouldn’t want to have Xmas dinner every day, so why not be prepared to wait until October to eat fresh sweetcorn?  To every thing there is a season. There’s always something yummy to eat if you’re prepared to be imaginative with your cooking.

And that’s the final point.. If you place a standing order for a small box of vegetables every week, the composition varies from week to week and with the time of year. The company does email and post on its website the contents of the following week’s boxes, but I generally don’t look at it. When this sort of box arrives, it’s usually a mixture of staples plus things that are not so familiar, and often something I’ve never cooked before.  If it hadn’t been for the veggie box, I would probably never have found out about how to cook chard, romanesco, jerusalem artichokes and celeriac. I look forward to these surprises. Not knowing exactly what’s coming forces me to cook new things, and if I don’t know how to cook them there’s always google. That’s why I get vegetables this way rather than going to a shop. It forces me to be a bit less lazy.

Of course, the summer salads and lighter things have now finished and, with winter coming on, there will be more root vegetables. I think the heavier vegetables tend to put some people off a bit, but there’s enough variety to keep it fun. My practice is to eat the more perishable things first, then move onto the rest. If it looks like things are going to go off or be unused I usually chuck them into a vegetable curry, which can be frozen or eaten over several days. Spicy dishes improve with time.

Each box looks like a lot of food, but I always manage to eat most of it. I have to admit that not all my culinary experiments are successful, but more often than not I am pleasantly surprised. I tried curried beetroot a few years ago, with more than a little trepidation. It turned out to be absolutely delicious, even if I did have to ad-lib a bit with some of the ingredients. The only drawback was an unexpectedly colourful trip to the lavatory the next morning…

Remembering Charles Byrd

Posted in Art, Biographical, Cardiff with tags , , on September 4, 2021 by telescoper

Most of the belongings I’ve just had delivered to Maynooth are of sentimental rather than financial value so I suppose it was inevitable that I’d get a bit sentimental opening them up. The painting above is by a Cardiff-based Welsh artist called Charles Byrd and it was painted in 1963, the year of my birth. The story of how it came into my possession over a decade ago can be found here.

I unpacked this yesterday along with most of my other artwork but I haven’t decided where to put it yet so it’s sitting on my desk until I decide where to put it.

It was with some sadness that I found out recently that Charles Byrd passed away in 2018 at the age of 101. There’s a nice little tribute to him here. I found out reading it that in the least years of his life he lived in a little flat on Llandaff Road, very close to where I lived in Pontcanna, though I never met him, which is a shame because he seems to have been quite a character!

Rest in peace, Charles Byrd (1916-2018).

Delivery Day

Posted in Biographical, Cardiff, Maynooth on September 3, 2021 by telescoper

At last I have been re-united with the belongings from my Cardiff house! I have to say, though, that it nearly didn’t happen. When I booked the removal as a return load I was told delivery to my Maynooth residence would happen “sometime in the week beginning 30th August”. I was further told that I would be contacted nearer the date to confirm date and time. That second bit didn’t happen and it was a surprise to me when two guys turned up this morning with all my stuff in a 40-ft wagon; I was in the house at 9am when they arrived so they just got on with unloading my stuff. I don’t know what would have happened had I been out. It wasn’t the fault of the two blokes who came with the lorry of course. In fact they were really helpful. Probably someone in an office hadn’t done their job.

Anyway, a couple of hours later they had unloaded my possessions and I made a start at the unpacking. I managed to get most of the 20 boxes of books onto shelves and also put up most of my pictures. I’ll probably move some of them later but they’re out of the way when they’re on the wall. Having worked at this all day without a lunch break, I stopped at 6.40pm. I haven’t yet started on the kitchen things but I’m satisfied nevertheless with progress.

I should be able finish the unpacking over the weekend. The kitchen will be slow because having been accumulating dust for the best part of two years all the pots, pans, crockery and glassware will have to go through the dishwasher before I put them away. I’ll also have to disinfect the fridge/freezer too. Then I’ll have to think about what to do with all the empty boxes and waste packing materials. They can all be recycled, but there’s far too much to fit in one wheelie bin!

So here I am. just over a year since I got the keys my Maynooth residence is definitely starting to feel like home. Better late than never!

Packing Up

Posted in Biographical, Cardiff, Maynooth with tags , , , on August 11, 2021 by telescoper

So here I am sitting in a virtually empty house in Cardiff, the bulk of my worldly goods now in transit to Ireland. The house seems a lot bigger with nothing in it. It also feels a bit strange to see all your possessions listed in an inventory.

The 9th and 10th of August were the first opportunities to do the removal from my Pontcanna residence, so I flew over at the weekend to be here to supervise the packing. I paid for the removals firm to do the actual packing, which was well worth the extra money. The company told me it would take two full days to pack up, which surprised me. In fact they did most of it on Monday arriving at 9.30am and departing around 3pm. Yesterday they arrived at 8.30am and were finished by 10.30am. They could easily have done it all in one day but they only had a smallish van which they filled up before leaving on Monday.

My stuff now gets stored in a container in a warehouse for a couple of weeks or so before being delivered to Maynooth by ferry. They’re doing this removal as a return load, which means waiting for a lorry to arrive to the UK from Ireland which would otherwise return empty. Taking my stuff on the return journey makes it more efficient for them and also quite a lot cheaper for me. This seemed the best option as I am not in a particular rush to receive delivery. I’ve waited a year so a couple more weeks won’t matter!

The fact they finished early yesterday got me out of an awkward situation. The powers that be scheduled three repeat examinations simultaneously at 2.30pm yesterday so I assumed I would have to be scrabbling around with my mobile phone in amongst the boxes and packing materials, which might have been awkward.

As it turned out I had plenty time to walk across Bute Park to Cardiff University where a former colleague in the School of Physics & Astronomy was kind enough to let me use an empty office and eduroam did the rest. All three papers passed without incident, and I had the added bonus of a few pints in the Flute and Tankard afterwards.

Yesterday was A-level results day so there was much talk about the new academic year. It seems Cardiff University is going to resume face-to-face teaching in September. I hope the School of Physics & Astronomy gets a good intake of first-years and that all goes well for all students and staff as they prepare to resume some form of normality. Cardiff has been very good to me over the years and I wish everyone there all the best for the future.

Incidentally I popped in to the Data Innovation Research Institute (where I used to work) while I was at the School of Physics and Astronomy, just to see if I could say hello to anyone I used to work with. The office is just over the other side of a car park from the Queen’s Buildings. I found that the folks are being relocated from the old office to a new building along with Mathematics and Computer Science up near Cathays Station. There was only one person there, packing up his stuff for removal…

Quinquennial Reflection

Posted in Biographical, Cardiff, Covid-19, Maynooth on July 29, 2021 by telescoper

One of the consequences of having written a blog for quite some time is that the back catalogue of posts provides reminders of significant anniversaries, and the opportunity to reflect on them. In this vein I noted that five years ago today, 29th July 2016 (a Friday), was my last day in office as Head of the School of Mathematical and Physical Sciences at Sussex University, a position I had held for three and a half years.

All I really remember of that last day was doing some packing and saying goodbye to some of the people I’d worked with there. I also broke down in tears twice. It’s not easy admitting defeat. Fortunately, it being summer, there were only a few people around to witness the waterworks.

I didn’t tell many people at Sussex of the main reason for my departure. There were work-related reasons – largely intense frustration with certain decisions made by Senior Management – but the main reason was that my Mam had been diagnosed with Alzheimer’s disease and her decline weighed too heavily on my mind for me to be able to function in that position. Although I think quite a few folk there feel I let them down by leaving before the end of my term, I still think it was the right decision. In fact I don’t think I really had any choice.

Incidentally, in summer 2016 there was a handover at the top of Sussex University. Michael Farthing had been V-chancellor when I arrived and he was replaced by Adam Tickell whom I met only once and only briefly before I departed. Now it seems he is stepping down after his 5-year term to become Vice-Chancellor at Birmingham University. There’ll no doubt be a new VC in post soon.

The first I knew about her final illness was at the end of 2015 when I visited Newcastle for Christmas and noticed how much her memory and behavior had changed. Shortly after that came the official diagnosis. Her condition deteriorated rapidly thereafter as dementia cruelly took hold and in 2018, being virtually completely incapacitated, she had to move into a care home. Fortunately she seemed relatively happy there. In the end it was pneumonia that took her, but at least she slipped away gently towards the end of 2019.

By leaving Sussex to go take up a part-time position, I had a notion that I might be able to help look after Mam, but I found the whole situation too painful and other things got in the way. In other words, I made excuses for myself. I wasn’t strong enough to contribute anything significant and the burden fell almost exclusively on the shoulders of others. I know I’ll never be able to put that right.

Having moved back to Cardiff it seemed my future was settled. I had a part-time position for a fixed term of three years. There was no guarantee (or indeed likelihood) of employment beyond that so I’d reconciled myself to taking early retirement in summer 2019 and disappearing into well-deserved obscurity. I fancied I might try my hand at setting crosswords to while away the time.

Then in 2017 I heard about a job opportunity at Maynooth, applied for it, and much to my surprise was offered it. I decided to accept it for reasons outlined here. I started here in December 2017, initial part-time alongside my part-time position at Cardiff. I resigned entirely from Cardiff in 2018 at which point my job here in Maynooth became full-time.

It seems no sooner I had I settled in as a full-time member of staff than I was made Head of Department of Theoretical Physics and no sooner had that happened than the Covid-19 pandemic struck. That not only increased my workload a lot (as it did for every member of staff) but made the logistics of buying a house and moving my possessions exceedingly difficult. If I’d known there was some urgency I might have been able to do it all in 2019 before the pandemic, but that didn’t happen. I did manage to buy a house in 2020 but my remaining belongings won’t be joining me from Cardiff until next month.

Despite the complications – and workload issues – I don’t regret the move to Maynooth. Whether the University feels the same is another question.

I often think the University would have been better off appointing a more junior Lecturer than a senior Professor given that so much of the workload in my current position involves teaching relatively introductory material and there is consequently very little time for research. Even less than I had at Sussex, actually. I have only published a few bits and pieces since 2017.

On the other hand, I am pleased at the steady progress being made by the Open Journal of Astrophysics and hope to have some further news on this front next month.

In summary, then, it has been a very strange five years altogether. Nothing has really gone the way I anticipated. Best laid plans and all that. The strangest thing, though, is that July 29th 2016 seems in the incredibly distant past. Perhaps that is because so many strange things have happened?

Having learnt a lesson from the last five years I’m not going to make predictions for the next five, nor even the next one! I hope we get through the pandemic sooner rather than later, and I hope the restructuring of Physics at Maynooth enables it to grow and prosper.

Back to Civilisation

Posted in Biographical, Cardiff, Covid-19, Cricket, GAA, Maynooth with tags , , , on July 24, 2021 by telescoper

So last night I returned safely from Cardiff to Ireland via Birmingham. Travel both ways was relatively uneventful. There can’t have been more than 30 people on the flight in either direction. I did however almost screw up the return flight by omitting to fill in the obligatory Covid-19 passenger locator form which I hadn’t realised is now online-only. I only found out that I had to do it before they would let me on the plane, resulting in a mad scramble with a poor phone connection to get it done. After a few goes and quite a bit of stress I succeeded and was allowed to board, conspicuously the last passenger to do so. We still managed to leave early though, and the short flight to Dublin – passing directly over Ynys Môn was relaxing and arrived on schedule; the immigration officer scanned my new-fangled Covid-19 vaccination certificate but wasn’t interested in the passenger locator form that caused me so much stress on departure.

I returned to Cardiff to take a bit of a break, to check up on my house and also prepare to move the rest of my belongings to Ireland. I was relieved when I got there last week that everything was basically in order, although there were lots of cobwebs and a very musty smell, which was hardly surprising since I hadn’t been there for 15 months. The inside of the fridge wasn’t a pretty sight either.

One night last week after meeting some friends for a beer in Cardiff I walked back via Pontcanna Fields and saw, much to my surprise, Camogie practice in progress in the twilight:

Camogie Practice, Pontcanna Fields, Cardiff.

The logistics of my planned removal proved a bit more complicated than I expected but eventually I cracked it and all the arrangements are now in place. I should receive delivery here in Maynooth next month. I’m doing it on the cheap as a part-load, which is why it will take a bit longer than usual.

Cleaning and packing was very hard work owing to the intense heat over the last week or so – it was regularly over 30° C – during the day, so I took quite a few siestas. My neighbours tell me it’s been much the same here in Maynooth, although it is a bit cooler today, around 20° with a very pleasant breeze.

Despite the hard work it was nice to have a change of scenery for a bit and also to meet up with some old friends from Cardiff days. Everyone has been in a state of limbo for the last 18 months or so, and although we’re not out of the woods yet there are signs of things coming back to life. When I went to Bubs in Cardiff for a drink last week it was the first time I’d been inside a pub since February 2020!

Incidentally, most people I saw observed social distancing, wore masks, etc. The rules in Wales are still fairly strict. Although open for indoor service, bars and restaurants seem to have few customers. Some people on trains to and from Birmingham didn’t wear masks. One group of unmasked and obnoxious English passengers on my return journey were loudly boasting how backwards Wales was compared to England, where the rules have relaxed despite a huge surge in cases. I moved to another carriage.

The only other thing I managed to do was attend a Royal London One-Day Cup match at Sophia Gardens between Glamorgan and Warwickshire in the baking heat of Sophia Gardens. It turned out to be a good tight game, with Glamorgan winning by 2 wickets courtesy of two consecutive boundaries. Most of the time I was sitting there in the shade I was thinking how glad I was not to be fielding in such conditions.

One thing that was very noticeable during my stay in Wales was that it was very hard to get fresh salad vegetables and the like. That may be partly due to weather-related demand or it may be due to a shortage of lorry drivers or other staff owing to Covid-19 isolation requirements and may be a consequence of Brexit. Who knows? I’ll just say that there’s been hot weather in Ireland, where the Covid-19 pandemic is also happening but there are no reports of shortages of fresh food here. I’m very much looking forward to having a nice salad with my dinner this evening.

Anyway, I suppose that’s enough rambling. At some point I’ll have to open up my email box to see what horrors lurk therein. Still can’t be worse than the fridge I opened last week. Can it?

Bernard Schutz FRS!

Posted in Cardiff, The Universe and Stuff with tags , , , , on May 6, 2021 by telescoper

I was idly wondering earlier this week when the annual list of new Fellows elected to the Royal Society would be published, as it is normally around this time of year. Today it finally emerged and can be found here.

I am particularly delighted to see that my erstwhile Cardiff colleague Bernard Schutz (with whom I worked in the Data Innovation Research Institute and the School of Physics & Astronomy) is now an FRS! In fact I have known Bernard for quite a long time – he chaired the Panel that awarded me an SERC Advanced Fellowship in the days before STFC, and even before PPARC, way back in 1993. It just goes to show that even the most eminent scientists do occasionally make mistakes…

Anyway, hearty congratulations to Bernard, whose elevation to the Royal Society follows the award, a couple of years ago, of the Eddington Medal of the Royal Astronomical Society about which I blogged here. The announcement from the Royal Society is rather brief:

Bernard Schutz is honoured for his work driving the field of gravitational wave searches, leading to their direct detection in 2015.

I thought I’d add a bit more detail by repeating what was included in the citation for Bernard’s Eddington Medal which focuses on his invention of a method of measuring the Hubble constant using coalescing binary neutron stars. The idea was first published in September 1986 in a Letter to Nature. Here is the first paragraph:

I report here how gravitational wave observations can be used to determine the Hubble constant, H 0. The nearly monochromatic gravitational waves emitted by the decaying orbit of an ultra–compact, two–neutron–star binary system just before the stars coalesce are very likely to be detected by the kilometre–sized interferometric gravitational wave antennas now being designed1–4. The signal is easily identified and contains enough information to determine the absolute distance to the binary, independently of any assumptions about the masses of the stars. Ten events out to 100 Mpc may suffice to measure the Hubble constant to 3% accuracy.

In this paper, Bernard points out that a binary coalescence — such as the merger of two neutron stars — is a self calibrating `standard candle’, which means that it is possible to infer directly the distance without using the cosmic distance ladder. The key insight is that the rate at which the binary’s frequency changes is directly related to the amplitude of the gravitational waves it produces, i.e. how `loud’ the GW signal is. Just as the observed brightness of a star depends on both its intrinsic luminosity and how far away it is, the strength of the gravitational waves received at LIGO depends on both the intrinsic loudness of the source and how far away it is. By observing the waves with detectors like LIGO and Virgo, we can determine both the intrinsic loudness of the gravitational waves as well as their loudness at the Earth. This allows us to directly determine distance to the source.

It may have taken 31 years to get a measurement, but hopefully it won’t be long before there are enough detections to provide greater precision – and hopefully accuracy! – than the current methods can manage!

Here is a short video of Bernard himself talking about his work:

Once again, congratulations to Bernard on a very well deserved election to a Fellowship of the Royal Society.

UPDATE: a more detailed biography of Bernard is now available on the Royal Society website.

The REF goes on

Posted in Biographical, Cardiff, Maynooth with tags , , , , on March 27, 2021 by telescoper

A few communications with former colleagues from the United Kingdom last week reminded me that, despite the Covid-19 pandemic, the deadline for submissions to the 2021 Research Excellence Framework is next week. It seems very strange to me to push ahead with this despite the Coronavirus disruption, but it’s yet another sign that academics have to serve the bureaucrats rather than the other way round.

I know quite a few people at quite a few institutions that are completely exhausted by the workload required to deal with the enormous exercise in paperwork that is intended to assess the quality and impact of research at UK universities.

With apologies for adding to the stack of memes based on recent events in the Suez Canal, it made me think of this:

One of the major plusses of being in Ireland is that there is no REF, so I’m able to avoid the enormous workload and stress generated by this exercise in bean-counting. That’s good because there are more than enough things on my plate right now, and more are being added every day.

My memories of the last REF in 2014 when I was Head of School at Sussex are quite painful, as it went badly for us then. I hope that the long-term investments we made then will pay off, though, and I hope things turn out better for Sussex this time especially for the Department of Physics & Astronomy for which the impact and environment components of the assessment dragged the overall score down.

Not being involved personally in the REF this time round I haven’t really paid much attention to the changes that have been adopted since 2014. One I knew about is that the rules make it harder for institutions to leave staff out of their REF return. Some universities played the system in 2014 by being very selective about whom they put in. Only staff with papers considered likely to be rated top-notch were submitted.

Having a quick glance at the documents I see two other significant differences.

One is that in 2014, with very few exceptions, all staff had to submit four research outputs (i.e. papers) to be graded. in 2021 the system is more flexible: the total number of outputs must equal 2.5 times the summed FTE (full-time equivalent) of the unit’s submitted staff, with no individual submitting more than 5 and none fewer than 1 (except in special cases related to Covid-19). Overall, then there will be fewer outputs than before, the multiplier of FTE being 2.5 (2021) instead of 4 (2014). There will still be a lot of papers, of course, not least because many Departments have grown since 2014, so the panels will have a great deal of reading to do. If that’s what they do with the papers. They’ll probably just look up citations…

The other difference relates to staff who have left an institution during the census period. In 2014 the institution to which a researcher moved got all the credit for the publications, while the institution they left got nothing. In 2021, institutions “may return the outputs of staff previously employed as eligible where the output was first made publicly available during the period of eligible employment, within the set number of outputs required.” I suppose this is to prevent the departure of a staff member causing too much damage to the institution they left and also to credit the institution where the work was done rather than specifically the individual who did it.

Thinking about the REF an amusing thought occurred to me about Research Assessment. My idea was to set up a sort of anti-REF (perhaps the Research Inferiority Framework) based not on the best outputs produced by an institutions researchers, but on the worst. The institutions producing the highest number of inferior papers could receive financial penalties and get relegated in the league tables for encouraging staff to write too many papers that nobody ever reads or are just plain wrong. My guess is that papers published in Nature might figure even more prominently in this…

Anyway, let me just take this opportunity to wish former colleagues at Cardiff and Sussex all the best for their REF submission on Wednesday 31st March. I hope it turns out well

Cosmology Talks: Marika Asgari on Kids 1000

Posted in Cardiff, Maynooth, The Universe and Stuff with tags , , , , on January 18, 2021 by telescoper

It’s time I shared another one of those interesting cosmology talks on the Youtube channel curated by Shaun Hotchkiss. This channel features technical talks rather than popular expositions so it won’t be everyone’s cup of tea but for those seriously interested in cosmology at a research level they should prove interesting. Since I haven’t posted any of these for a while I’ve got a few to catch up on – this one is from September 2020.

In this talk Marika Asgari tells us about the recent Kilo-Degree Survey (KiDS) cosmological results. These are the first results from KiDS after they have reached a sky coverage of 1000 square degrees. Marika first explains how they know that the results are “statistics dominated” and not “systematics dominated”, meaning that the dominant uncertainty comes from statistical errors, not systematic ones. She then presents the cosmological results, which primarily constrain the clumpiness of matter in the universe, and which therefore constrain Ωm and σ8. In the combined parameter “S8“, which is constrained almost independently from Ωm by their data they see a more than 3σ tension with the equivalent parameter one would infer from Planck.

P. S. The papers that accompany this talk can be found here and here.