Stephen Green
@stephenrgreen.bsky.social
Black holes, gravitational waves, and AI.
UKRI Future Leaders Fellow @ University of Nottingham.
https://www.stephenrgreen.com/
UKRI Future Leaders Fellow @ University of Nottingham.
https://www.stephenrgreen.com/
Reposted by Stephen Green
Nottinghamshire MPs have written to @uniofnottingham.bsky.social, urging the university to reconsider proposed course suspensions and potential closures, which would significantly impact staff, students, and our wider city and county.
November 24, 2025 at 1:23 PM
Nottinghamshire MPs have written to @uniofnottingham.bsky.social, urging the university to reconsider proposed course suspensions and potential closures, which would significantly impact staff, students, and our wider city and county.
What a stupid government.
i: Reeves to unveil £600m raid on foreign student
university fees #TomorrowsPapersToday
university fees #TomorrowsPapersToday
November 24, 2025 at 8:31 AM
What a stupid government.
Reposted by Stephen Green
I find insane that shabana mahmood is going out there and saying "white british people cannot be asked to accept too many of us outsiders, it is not in their nature, and their pushback against all of us is to be placated". What???
Home Secretary Shabana Mahmood made more explicit her argument that when ethnic minorities face racism, "we have no choice but to ask: what is the cause of our division"
Her answer is the level of net migration, 2019-23 causes racism. (She on Monday said it was caused by the scale of asylum)
Her answer is the level of net migration, 2019-23 causes racism. (She on Monday said it was caused by the scale of asylum)
November 21, 2025 at 9:47 AM
I find insane that shabana mahmood is going out there and saying "white british people cannot be asked to accept too many of us outsiders, it is not in their nature, and their pushback against all of us is to be placated". What???
Reposted by Stephen Green
Shabana Mahmood's proposal to stop being told to "go back home" is to send people "home". Her proposal to stop black and brown people from feeling like they don't belong, is to bake in to the immigration system that they will never belong.
November 20, 2025 at 5:15 PM
Shabana Mahmood's proposal to stop being told to "go back home" is to send people "home". Her proposal to stop black and brown people from feeling like they don't belong, is to bake in to the immigration system that they will never belong.
Reposted by Stephen Green
Personal note: London has been home for a very, very long time, but as of today, I am also officially a Brit - that is to say, a British citizen. I feel relieved and I feel grateful - but not, perhaps, in the forelock-tugging way GB News/Starmer expect a new immigrant to be.
November 12, 2025 at 7:08 AM
Personal note: London has been home for a very, very long time, but as of today, I am also officially a Brit - that is to say, a British citizen. I feel relieved and I feel grateful - but not, perhaps, in the forelock-tugging way GB News/Starmer expect a new immigrant to be.
Reposted by Stephen Green
Govt scraps all electrification investment. Midland Main Line to stay forever diesel Leicester Nottingham Derby Sheffield. Hugely embarrassing and inexplicable
www.ft.com/content/5ecd...
www.ft.com/content/5ecd...
UK transport secretary says full electrification of railways ‘not affordable right now’
Heidi Alexander says focus will be on other projects such as HS2
www.ft.com
November 8, 2025 at 9:24 AM
Govt scraps all electrification investment. Midland Main Line to stay forever diesel Leicester Nottingham Derby Sheffield. Hugely embarrassing and inexplicable
www.ft.com/content/5ecd...
www.ft.com/content/5ecd...
Reposted by Stephen Green
A policy this expansive would certainly mean mass stripping of permanent residence status from people with ILR (including pensioners and parents of British children) on a scale far beyond anything any democracy has ever done before. There is no public support for such an extreme policy.
Via @sundersays.bsky.social the Conservatives' draft legislation - absolutely clear that it applies to (and is intended to apply to) legal permanent residents claiming state pension (on the basis of their contributions) or child benefit for British kids.
publications.parliament.uk/pa/bills/cbi...
publications.parliament.uk/pa/bills/cbi...
October 22, 2025 at 7:22 AM
A policy this expansive would certainly mean mass stripping of permanent residence status from people with ILR (including pensioners and parents of British children) on a scale far beyond anything any democracy has ever done before. There is no public support for such an extreme policy.
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!
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!
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...
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...
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...
jobs.nottingham.ac.uk
October 9, 2025 at 10:28 PM
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!
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!
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: 👇🏽
September 26, 2025 at 5:54 PM
Happy to have such a good MP!
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...
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...
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...
jobs.nottingham.ac.uk
September 23, 2025 at 10:15 PM
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...
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...
Reposted by Stephen Green
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’.
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’.
September 22, 2025 at 7:10 AM
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’.
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
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.
I urge the university’s leadership to come back to the table and work with staff to reach a fair settlement.
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
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
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
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
September 22, 2025 at 12:38 PM
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.
I urge the university’s leadership to come back to the table and work with staff to reach a fair settlement.
Reposted by Stephen Green
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.
September 22, 2025 at 6:34 AM
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
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.
September 22, 2025 at 6:28 AM
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
Reform are now coming after people with permanent residency. It'll be citizens next. No one is safe from authoritarian governments.
September 21, 2025 at 9:26 PM
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
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...
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
September 20, 2025 at 6:13 AM
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...
But will they be held accountable? Of course not.
www.theguardian.com/education/20...
Reposted by Stephen Green
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. 🧵
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. 🧵
September 3, 2025 at 8:27 AM
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. 🧵
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. 🧵
Reposted by Stephen Green
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
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
August 26, 2025 at 8:27 AM
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
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
Reposted by Stephen Green
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
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
August 26, 2025 at 6:38 AM
Still impossible to talk to @aircanada.bsky.social. The strike may be over but there are a lot of stranded passengers.
No luck rebooking. To be clear, my anger is directed at Air Canada, not the flight attendants. They should pay their staff properly.
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.
AC has absolute contempt for its customers and employees.
August 19, 2025 at 6:13 PM
Still impossible to talk to @aircanada.bsky.social. The strike may be over but there are a lot of stranded passengers.
Reposted by Stephen Green
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.
It’s the first thing that I learned at @utoronto.ca in a course about contract negotiations and difficult conversations.
Air Canada CEO Michael Rousseau joins BNN Bloomberg to discuss the impact of the strike.
Timing - 2:35
www.bnnbloomberg.ca/video/shows/...
Timing - 2:35
www.bnnbloomberg.ca/video/shows/...
August 18, 2025 at 10:02 PM
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.
It’s the first thing that I learned at @utoronto.ca in a course about contract negotiations and difficult conversations.
No luck rebooking. To be clear, my anger is directed at Air Canada, not the flight attendants. They should pay their staff properly.
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.
AC has absolute contempt for its customers and employees.
August 18, 2025 at 10:21 PM
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.
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.
AC has absolute contempt for its customers and employees.
August 17, 2025 at 10:23 PM
Dear @aircanada.bsky.social please assist with rebooking.
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.
AC has absolute contempt for its customers and employees.
August 17, 2025 at 9:55 PM
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.
AC has absolute contempt for its customers and employees.
Reposted by Stephen Green
there are 2 tried+tested responses to realization that staff costs are by far the greatest expense for UK universities:
1. recognize, value, and develop the people who “are the university”
2. cut jobs on the wishful thinking that those left standing can do other people’s 1.5fte on top of their own
1. recognize, value, and develop the people who “are the university”
2. cut jobs on the wishful thinking that those left standing can do other people’s 1.5fte on top of their own
Very few people seem to understand university finances and, distressingly, this includes many academics and most policymakers. This is an attempt to condense the key points you need to know. open.substack.com/pub/profseri...
Understanding University Finances
... a very short guide
open.substack.com
August 12, 2025 at 8:36 AM
there are 2 tried+tested responses to realization that staff costs are by far the greatest expense for UK universities:
1. recognize, value, and develop the people who “are the university”
2. cut jobs on the wishful thinking that those left standing can do other people’s 1.5fte on top of their own
1. recognize, value, and develop the people who “are the university”
2. cut jobs on the wishful thinking that those left standing can do other people’s 1.5fte on top of their own