Stephen Green
@stephenrgreen.bsky.social
1.4K followers 280 following 53 posts
Black holes, gravitational waves, and AI. UKRI Future Leaders Fellow @ University of Nottingham. https://www.stephenrgreen.com/
Posts Media Videos Starter Packs
stephenrgreen.bsky.social
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!
stephenrgreen.bsky.social
Happy to have such a good MP!
nadiawhittomemp.bsky.social
Why mandatory digital ID cards - a policy no one voted for - are an attack on civil liberties, won’t tackle irregular employment and will only play into Reform’s hands: 👇🏽
stephenrgreen.bsky.social
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!
stephenrgreen.bsky.social
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).
stephenrgreen.bsky.social
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.
Reposted by Stephen Green
duncanweldon.bsky.social
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’.
Reposted by Stephen Green
nadiawhittomemp.bsky.social
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.
uonucu.bsky.social
Strike starts TODAY!!!

Branch members will be picketing from 8 to 11 today, tomorrow, and Wednesday at UP's west, south, and north entrance and Jubilee's main entrance on Derby road.

Come show your support!

#StopTheCuts #SaveHE
uonucu.bsky.social
Strike action is ON!!!

Next week will be the first of 4 weeks of striking from our members as we continue to say NO to the compulsory redundancies forced on us by the university for their poor financial choices.

#StopTheCuts #SaveHE
Reposted by Stephen Green
iandunt.bsky.social
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.
Reposted by Stephen Green
iandunt.bsky.social
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.
Reposted by Stephen Green
samfr.bsky.social
Reform are now coming after people with permanent residency. It'll be citizens next. No one is safe from authoritarian governments.
Reposted by Stephen Green
astromikemerri.bsky.social
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...
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
www.theguardian.com
Reposted by Stephen Green
georgemonbiot.bsky.social
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. 🧵
stephenrgreen.bsky.social
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.
stephenrgreen.bsky.social
Some rules are dumb and intentionally punitive. Airlines should be held to a higher standard.
stephenrgreen.bsky.social
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.
Reposted by Stephen Green
ligo.org
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
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.
Reposted by Stephen Green
daniel-williams.co.uk
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
An image with a black hole merger in the background. The text reads "128 new mergers revealed: LIGO-Virgo-KAGRA GWTC-4.0".
stephenrgreen.bsky.social
Still impossible to talk to @aircanada.bsky.social. The strike may be over but there are a lot of stranded passengers.
stephenrgreen.bsky.social
No luck rebooking. To be clear, my anger is directed at Air Canada, not the flight attendants. They should pay their staff properly.
stephenrgreen.bsky.social
Stranded in Italy thanks to Air Canada. They say by email that they can't find any flights in the next three days and offer a refund -- ignoring EU 261/2004 regulations that they have to rebook on *any* airline. They do not answer the phone.

AC has absolute contempt for its customers and employees.
stephenrgreen.bsky.social
Staggeringly incompetent leadership at Air Canada.
stephenrgreen.bsky.social
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.
parismarx.com
Air Canada’s CEO gave striking flight attendants more reason to defy a government order to go back to work.

On BNN Bloomberg, CEO Michael Rousseau says the company didn’t make provisions for passengers with cancelled flights because it assumed government would enforce Section 107 to end the strike.
Reposted by Stephen Green
michhham.bsky.social
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.
cupescfp.bsky.social
Air Canada CEO Michael Rousseau joins BNN Bloomberg to discuss the impact of the strike.

Timing - 2:35
www.bnnbloomberg.ca/video/shows/...
stephenrgreen.bsky.social
bsky.app/profile/cupe...

The CEO even admits they had no plan.
cupescfp.bsky.social
Air Canada CEO Michael Rousseau joins BNN Bloomberg to discuss the impact of the strike.

Timing - 2:35
www.bnnbloomberg.ca/video/shows/...
stephenrgreen.bsky.social
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>