Stephen Green

Postdoc application deadline extended to Monday 13 October!

Looking for experts in black hole perturbation theory, gravitational waves, or numerical relativity. Come join the growing team at Nottingham.

Please share and apply if interested. Reach out with questions!

Happy to have such a good MP!

You'd be joining the Nottingham Centre of Gravity, with 17 permanent staff working on a wide range of topics in gravitation. Areas include data analysis / ML, black hole theory, numerical relativity, environments, and beyond-GR. We're members of LIGO, LISA, and ET.

Please reach out if interested!

Funded by the STFC GW Consolidated Grant “Precision Gravity With LIGO-Virgo-Karga” (PI: T Sotiriou, Co-Is: M Bezares, S Green, L Sberna) and/or the UKRI Future Leaders Fellowship “AI-Driven Inference for Gravitational Waves: Accelerating Discoveries in Fundamental Physics” (PI: S Green).

We are looking for an expert in gravitational waves, to carry out research on perturbative or non-perturbative waveform modeling with applications to data analysis. Also looking for theorists, especially experts in black hole perturbation theory or ringdown.

Job Vacancy at the University of Nottingham: Research Associate/Fellow (Fixed Term) We are looking for a researcher, whose expertise lies in gravitational waves. They will be expected to conduct research on perturbative or nonperturbative waveform modelling, with applications to data...

Job Announcement!

Postdoc in Gravitational Waves at University of Nottingham

* Two year position
* Deadline soon: 29 September
* Details and application form: jobs.nottingham.ac.uk/Vacancy.aspx...

Retrospectively removing indefinite leave to remain would be immoral and economically damaging. It would tear families apart.
Attacking it as ‘potentially illegal’ is completely beside the point.
Argue with the (awful) idea. Don’t try ’well, actually you can’t do that’.

Solidarity with @uonucu.bsky.social members who are striking against compulsory redundancies and job losses at the University of Nottingham.

I urge the university’s leadership to come back to the table and work with staff to reach a fair settlement.

Labour must finally stand up firmly against a Reform policy. Call it out for the obscenity it is. Starmer has recently finally spoken out against populism and division. What could be more populist and divisive than this? Nor for heaven's sake, don't dodge it, or excuse it. Challenge it.

It would signal the the de facto end of nearly all immigration to this country, from those coming to work to those who come for love. It would crater our economy, tear up relationships, remove status from millions of European, result in endless legal battles and leave us as an international pariah.

Reform are now coming after people with permanent residency. It'll be citizens next. No one is safe from authoritarian governments.

Quarter of UK university physics departments at risk of closing, survey finds Four out of five making staff cuts as physicists say findings are ‘great concern’ for UK’s leadership in important areas

Let us name those who should take responsibility for this situation. The senior management of universities failed to negotiate a sustainable system of funding, and then sleep-walked into mess.

But will they be held accountable? Of course not.

www.theguardian.com/education/20...

I see people bleating yet again that "elections are won from the centre". Let's examine this claim.
1. Not long ago, the current Labour government, with its grovelling to corporations and oligarchs, extreme deregulation, island of strangers rhetoric etc, would have been classed as radical right. 🧵

I fly Ryanair because they operate routes from my local airport. It's not a great value. I'd choose any other airline if I could.

Some rules are dumb and intentionally punitive. Airlines should be held to a higher standard.

A cabin bag maximum thickness of 20 cm is absurd. A more standard thickness of 25 cm fits fine and does not reduce the number of additional bags that can be loaded.

New masses in the stellar graveyard plot, showing astronomical observations of black holes and neutron stars. The number of gravitational-wave observations of black holes is overwhelming. The plot is arranged to look nice, the horizontal axis has no meaning, but the vertical one shows masses. We have a significant range of masses from about 1 solar mass to over 200 solar masses for our largest merger remnant. New out today is a neutron star black hole binary GW230518_125908, as well as a lot of binary black holes.

Results from the first part of our fourth LIGO @egovirgo.bsky.social KAGRA observing run are out today!

We're pleased to share the largest catalog of gravitational-wave observations with more discoveries of black holes and neutron stars

📰 arxiv.org/abs/2508.18082

🔭🧪⚛️☄️ #GWTC4

An image with a black hole merger in the background. The text reads "128 new mergers revealed: LIGO-Virgo-KAGRA GWTC-4.0".

128 new mergers between black holes and neutron stars.

Today we're revealing the biggest ever update to our count of gravitational wave detections. New data from May 2023 to January 2024 has more than doubled the number we've seen.
🧵 1/3

@ligo.org #Virgo #KAGRA #GravitationalWaves 🔭 #GWTC-4 #O4a

Still impossible to talk to @aircanada.bsky.social. The strike may be over but there are a lot of stranded passengers.

Cutting off the nose to spite the face.

www.nasdaq.com/articles/air...

Staggeringly incompetent leadership at Air Canada.

In a rare moment of saying the quiet part of loud... The CEO admits on live TV that AC made no plans for passengers and they were negotiating with flight attendants in bad faith.

Assuming there would be zero negotiation—because of the assumption that Section 107 “would be enforced"—is the textbook definition of a bath faith negotiation.

It’s the first thing that I learned at @utoronto.ca in a course about contract negotiations and difficult conversations.

bsky.app/profile/cupe...

The CEO even admits they had no plan.

Finally, the labour negotiations have been ongoing for 8 months, yet AC has apparently done nothing to mitigate the travel chaos that would ensue. Again, complete contempt for their customers and staff. They don't care at all about the damage they do to people's plans or the economy.</rant>

This is clearly designed to avoid their duties under the European rules on airlines EU 261, which require rebooking on *any* airline.

AC also doesn't inform their customers about these EU rules, even though it's required. They are hoping customers take the refund, which is cheaper.

The AC online system will only rebook on partner airlines, which makes it necessary to call. But the call center cannot handle the high volume, so they hang up every time. This makes it effectively impossible to rebook on non-partner airlines---by design.

No luck rebooking. To be clear, my anger is directed at Air Canada, not the flight attendants. They should pay their staff properly.

Dear @aircanada.bsky.social please assist with rebooking.

@aircanada.bsky.social