From Qixin.Xie at nottingham.ac.uk Mon Mar 2 08:00:00 2026 From: Qixin.Xie at nottingham.ac.uk (Qixin Xie) Date: Mon, 2 Mar 2026 08:00:00 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar this week: Jonathan Butterworth (3rd Mar) Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 2 08:07:46 2026 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor (staff)) Date: Mon, 2 Mar 2026 08:07:46 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c 02-03-26) Message-ID: Monday 2nd March at 1.30pm, A113 CAPT ? Theoretical Physics Student Seminar Usama Aqeel WTF is an EFT? --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesdays at 11.30am, A113 CAPT ? Astronomy Journal Club Tuesday 3rd March at 1pm, A113 CAPT ? Particle Cosmology and Gravity Seminar Jonathan M Butterworth (UCL) Future-proofing measurements to probe the energy frontier The Large Hadron Collider at CERN gives us direct access to physics above the key "electroweak symmetry breaking" energy scale, where the weak and electromagnetic forces come together. This scale is associated with the Higgs boson, discovered at CERN in 2012. As we near the end of the third running period of the collider, and head toward the "high luminosity" era, I will discuss how precise measurements can be made with a high degree of model-independence, and how they can therefore be used to probe both the Standard Model and physics beyond it. I will present a method of exploiting this and latest results. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Wednesday 4th March at 3.45pm, C4 Physics ? Astronomy Seminar Freeke van de Voort (Cardiff) Galaxies and their circumgalactic medium in cosmological simulations Galaxies are intimately connected to the environments they live in. The haloes around them contain the gas reservoir from which the galaxies grow, while galactic outflows heat and enrich this circumgalactic medium (CGM). Understanding the CGM can thus help us constrain models of galaxy formation. Using zoom-in cosmological simulations of galaxies, I will discuss the physical properties of the gas around galaxies. The multiphase nature of the CGM is affected by the resolution of our simulations, which enhances the amount of cool, neutral gas in the halo, bringing them more in line with observations. I will show how the properties of galaxies and the CGM depend on the presence of magnetic fields, on feedback from relativistic cosmic rays, and on the inclusion of thermal conduction. I will also discuss how and why dwarf galaxies and massive galaxies are affected differently by these processes. --- Thursday 5th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Adela Fernandez Can intracluster light trace the shape of dark matter haloes? We investigate whether the intracluster light (ICL) can be used as a tracer of the shape of the dark matter (DM) haloes in galaxy clusters. Establishing such a link would provide a new way to probe the shapes of DM directly from deep imaging, to ultimately help us better understand its nature. Using the Hydrangea simulations, we measure the three-dimensional and projected shapes of the ICL and DM concentric ellipsoidal shells using the shape tensor method. We find that the ICL and DM position angles are closely aligned, with major-axis misalignments below 10 degrees, and very similar axis ratios, though the DM is slightly rounder on average. We show that the satellite distribution is a less reliable tracer than the ICL, with large misalignment angles and a bias toward more elliptical shapes. These results indicate that the ICL can serve as a useful proxy for the ellipticity and orientation of DM haloes. Thursday 5th March at 2.45pm, A113 CAPT ? Particle Cosmology Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- If you have any events/visitors you would like included in next week?s bulletin, please let me know. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DCA7D9.0D81BB60] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... 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Name: Outlook-Workforce .png Type: image/png Size: 46016 bytes Desc: Outlook-Workforce .png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 2 13:29:51 2026 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor (staff)) Date: Mon, 2 Mar 2026 13:29:51 +0000 Subject: [Astro] [CAPT] FW: Public speaking/outreach opportunities In-Reply-To: References: Message-ID: From: Kieran Wood > Sent: Monday, March 02, 2026 1:22 PM To: capt at nottingham.ac.uk > Subject: Public speaking/outreach opportunities Hi all, I am writing to make you aware of a couple of public speaking and outreach opportunities that some of you may be interested in taking part in. Please feel free to get in touch if you would like to get involved, or if you have any questions! Details provided below: 1. Pint of Science festival 2026 Pint of Science (https://pintofscience.com/) is a global, volunteer-led science festival that happens once per year across 500 cities around the world, where thousands of researchers present their work to the public in local pubs. I'm part of the organisational committee in Nottingham this year, where the festival is taking place on the evenings of the 18th, 19th and 20th May. We're currently at the stage where we are looking for volunteers who would like to speak - the branch of the event I'm responsible for (alongside Chris Morley and Margot Roeth who are also from physics) is called "Atoms to Galaxies". While a lot of the speaking slots have been filled already, there are still a few open, so I'm putting the call out to all the astronomers and particle theorists of CAPT. This opportunity is open to everybody: professors, postdocs and PhD students alike. The plan is to get 2 or 3 speakers per evening to talk about what kind of research they do to the general public for maybe 15-20 minutes, followed by some friendly questions. The events will run from about 7:30-10:00pm ish, and the topic of the talks would be entirely up to the speakers. Anyone who wants to speak would also of course be rewarded with free drinks for the evening. In between the talks there will additionally be some kind of fun activity for the audience e.g. a science-related pub quiz, that we're going to sort out ourselves, but if anybody has any brilliant ideas you are welcome to propose them. 2. PubhD Nottingham PubhD is a very similar event to Pint of Science that I have been involved in organising for a fair few months now. It is essentially a much smaller-scale, local, early-career oriented version of Pint of Science. Again, the idea is to get 3 speakers to talk about what they do to the public in a local pub (the Barley Twist, near the train station), the difference being that the speaking slots are exclusively reserved for PhDs/Postdocs, and they are not restricted to just scientists. The event runs once per month, usually on the second Wednesday of the month, from about 7:30-9:30pm, with the following format: * each speaker gets 10 mins to talk about what they do to an interested audience, followed by up to 20 mins of (friendly!) questions from the audience * each speaker gets at least one free drink of their choice (but hopefully, and indeed typically, more) * a flip chart and coloured pens will be provided. No powerpoints, but handouts accepted, and props welcomed The next one is 11th March, and there is still a slot open for a speaker, so do let me know if you fancy giving it a go - it is good fun! (We also have t-shirts available to buy for the low, low price of ?18, featuring the vitruvian man holding 4 pint glasses) Best wishes, Kieran -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From jorma.louko at nottingham.ac.uk Mon Mar 2 21:28:53 2026 From: jorma.louko at nottingham.ac.uk (Jorma Louko (staff)) Date: Mon, 2 Mar 2026 21:28:53 +0000 Subject: [Astro] [CAPT] Gravity Lab seminar Fri 6 March 11am In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Clare.Burrage at nottingham.ac.uk Tue Mar 3 12:55:23 2026 From: Clare.Burrage at nottingham.ac.uk (Clare Burrage (staff)) Date: Tue, 3 Mar 2026 12:55:23 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar this week: Jonathan Butterworth (3rd Mar) In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Jesse.Golden-Marx at nottingham.ac.uk Tue Mar 3 14:28:34 2026 From: Jesse.Golden-Marx at nottingham.ac.uk (Jesse Golden-Marx (staff)) Date: Tue, 3 Mar 2026 14:28:34 +0000 Subject: [Astro] Next week's seminar In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From Ed.Copeland at nottingham.ac.uk Tue Mar 3 23:42:54 2026 From: Ed.Copeland at nottingham.ac.uk (Edmund Copeland (staff)) Date: Tue, 3 Mar 2026 23:42:54 +0000 Subject: [Astro] [CAPT] Science and Technology Committee meeting today Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ed.Copeland at nottingham.ac.uk Wed Mar 4 23:00:40 2026 From: Ed.Copeland at nottingham.ac.uk (Edmund Copeland (staff)) Date: Wed, 4 Mar 2026 23:00:40 +0000 Subject: [Astro] [CAPT] Science and Technology Committee meeting today In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From rhys.jordan at nottingham.ac.uk Thu Mar 5 10:04:00 2026 From: rhys.jordan at nottingham.ac.uk (Rhys Jordan) Date: Thu, 5 Mar 2026 10:04:00 +0000 Subject: [Astro] Lunch Talk - 05/03/2026 In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From phil.parry at nottingham.ac.uk Thu Mar 5 14:40:17 2026 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Thu, 5 Mar 2026 14:40:17 +0000 Subject: [Astro] [CAPT] FAO users of Odhar and Brahan - servers being relocated Thurs 12/3/26 Message-ID: <52290703-3527-4f32-8c9c-bc953a5c2313@nottingham.ac.uk> Hi all, Due to the upcoming sale of the Kings Meadow campus, our servers hosted there (brahan and odhar) are being moved to Cripps South (where captain is currently situated). This is planned for next Thursday (12 March); the actual move will start at 11am and is expected to take around 3 hours, but I intend to shut the machines down earlier at 9am, and will be doing OS updates after the move, so please expect both servers to be unavailable all day. Apologies in advance for the disruption - if this will cause major problems for you, please let me know ASAP. Thanks, Phil P _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Garreth.Martin at nottingham.ac.uk Fri Mar 6 16:06:25 2026 From: Garreth.Martin at nottingham.ac.uk (Garreth Martin (staff)) Date: Fri, 6 Mar 2026 16:06:25 +0000 Subject: [Astro] [CAPT] Cake! In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Qixin.Xie at nottingham.ac.uk Mon Mar 9 08:00:00 2026 From: Qixin.Xie at nottingham.ac.uk (Qixin Xie) Date: Mon, 9 Mar 2026 08:00:00 +0000 Subject: [Astro] =?utf-8?q?=5BCAPT=5D_Particle_Cosmology_and_Gravity_Semi?= =?utf-8?q?nar_this_week=3A=C2=A0Basudeb_Dasgupta_=2810th_Mar=29_+_John_T?= =?utf-8?q?=2E_Giblin_=2811th_Mar=29?= Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 9 09:03:38 2026 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor (staff)) Date: Mon, 9 Mar 2026 09:03:38 +0000 Subject: [Astro] [CAPT] CAPT Weekly bulletin (w/c 09-03-26) Message-ID: Monday 9th March at 1.30pm, A113 CAPT ? Theoretical Physics Student Seminar Benjamin Muntz An introduction to CFTs - Part 1 --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesdays at 11.30am, A113 CAPT ? Astronomy Journal Club Tuesday 10th March at 1pm, C12 Physics ? Particle Cosmology and Gravity Seminar Basudeb Dasgupta (Tata Institute of Fundamental Research, Mumbai, India) Probing Dark Matter with Gravitational Waves from Mergers (online) Gravitational waves open new avenues to study dark matter through the dynamics of compact objects. In this talk, we will outline two examples of this new rapidly developing field. First, we will discuss how dark matter captured by neutron stars can induce their collapse into low-mass black holes, with their mergers detectable by current and future observatories. Such events probe dark matter?nucleon interactions at cross-sections below the neutrino floor and masses spanning GeV to PeV. Existing LIGO/Virgo data already yield strong bounds, while future detections could reveal dark core collapse and account for puzzles such as the missing pulsars near the Galactic Center. In the second half, I will discuss a more model-independent probe using compact binaries near galactic centers, which can confirm or rule out parsec-scale density spikes and may be used to constrain broad classes of dark matter models. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Wednesday 11th March at 2pm, A113 CAPT ? Particle Cosmology and Gravity Seminar John T Giblin (Kenyon College) Primordial Black Holes from Cosmology Primordial black holes (PBH) are formed when cosmic-scale over-densities collapse. Unlike astrophysical black holes--formed in the aftermath of large stars--PBH masses are set by the size of the cosmic horizon and can therefore form at any mass range. Among the mechanisms that would allow for such large horizon-scale overdensities is cosmic preheating. In this talk I will discuss the first simulations that show the formation of primordial black holes in the context of so-called kinetic preheating, a proof-of-concept that PBH can be formed from cosmological processes. I will also discuss several scenarios in which PBH are not formed and speculate on why some models are successful and some are not. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d Wednesday 11th March at 3pm, C14 Physics ? Postgraduate Poster Competition The competition is sponsored by Cerca Magnetics. Posters will be judged by representatives from Cerca Magnetics and by staff from the school. Public viewing is from 3-4pm, with prize-giving at around 4pm. Soft drinks and snacks will be provided. All staff and students are encouraged to attend. --- Thursday 12th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Ke Ma Constraining the silicon abundance in the IGM by modelling the Ly? ? Si III correlations The one-dimensional Lyman-? Forest power spectrum (P1D) serves as an important probe of the IGM and cosmological parameters. However, contamination from Si III absorption lines embedded within the Ly? forest introduces a significant systematic uncertainty in P1D measurements. To better model and mitigate this effect, we performed a detailed analysis of Si III absorption and its impact on the P1D using the Sherwood-Relics hydrodynamical simulation suite. We identify several effects that were not captured in earlier studies, largely due to limitations in spectral resolution at the time. These effects are also present in the more recent DESI measurements. To address them, we develop a new analytical fitting function that incorporates previously neglected physical ingredients. The model is validated against multiple simulated datasets across redshifts 2.2 < z < 5.0 and wavenumbers k < 0.2 s/km (See arXiv:2509.08613). Applying this model to eBOSS and DESI observations reveals a Si III signal stronger than expected from forward modeling based on published Si abundance constraints. This might point to a new way to constrain the metal abundance in the IGM. Thursday 12th March at 2.45pm, A113 CAPT ? Particle Cosmology Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- If you have any events/visitors you would like included in next week?s bulletin, please let me know. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DCAD43.519FBF30] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 190221 bytes Desc: image001.png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From rhys.jordan at nottingham.ac.uk Mon Mar 9 10:21:43 2026 From: rhys.jordan at nottingham.ac.uk (Rhys Jordan) Date: Mon, 9 Mar 2026 10:21:43 +0000 Subject: [Astro] Lunch Talk - 12/03/2026 Message-ID: An HTML attachment was scrubbed... URL: From Nick.Botterill at nottingham.ac.uk Mon Mar 9 11:34:05 2026 From: Nick.Botterill at nottingham.ac.uk (Nicholas Botterill (staff)) Date: Mon, 9 Mar 2026 11:34:05 +0000 Subject: [Astro] [CAPT] CAPT gutter cleaning, Tuesday 10th March Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Outlook-k1kjgcjo.png Type: image/png Size: 116095 bytes Desc: Outlook-k1kjgcjo.png URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: Outlook-Workforce .png Type: image/png Size: 46016 bytes Desc: Outlook-Workforce .png URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From phil.parry at nottingham.ac.uk Wed Mar 11 14:48:27 2026 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Wed, 11 Mar 2026 14:48:27 +0000 Subject: [Astro] [CAPT] Fwd: FAO users of Odhar and Brahan - servers being relocated Thurs 12/3/26 In-Reply-To: <52290703-3527-4f32-8c9c-bc953a5c2313@nottingham.ac.uk> References: <52290703-3527-4f32-8c9c-bc953a5c2313@nottingham.ac.uk> Message-ID: Hi all, A reminder that odhar and brahan will be offline tomorrow, while they are moved from KMC to Cripps South.? I'll email again when they're back online. Cheers Phil P -------- Forwarded Message -------- Subject: FAO users of Odhar and Brahan - servers being relocated Thurs 12/3/26 Date: Thu, 5 Mar 2026 14:40:17 +0000 From: Phil Parry To: capt at nottingham.ac.uk Hi all, Due to the upcoming sale of the Kings Meadow campus, our servers hosted there (brahan and odhar) are being moved to Cripps South (where captain is currently situated). This is planned for next Thursday (12 March); the actual move will start at 11am and is expected to take around 3 hours, but I intend to shut the machines down earlier at 9am, and will be doing OS updates after the move, so please expect both servers to be unavailable all day. Apologies in advance for the disruption - if this will cause major problems for you, please let me know ASAP. Thanks, Phil P -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From rhys.jordan at nottingham.ac.uk Thu Mar 12 12:37:37 2026 From: rhys.jordan at nottingham.ac.uk (Rhys Jordan) Date: Thu, 12 Mar 2026 12:37:37 +0000 Subject: [Astro] Lunch Talk - 12/03/2026 In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: From phil.parry at nottingham.ac.uk Fri Mar 13 00:02:30 2026 From: phil.parry at nottingham.ac.uk (Phil Parry) Date: Fri, 13 Mar 2026 00:02:30 +0000 Subject: [Astro] [CAPT] Fwd: FAO users of Odhar and Brahan - servers being relocated Thurs 12/3/26 In-Reply-To: References: <52290703-3527-4f32-8c9c-bc953a5c2313@nottingham.ac.uk> Message-ID: <7606bff0-8128-44d6-9f6b-db0a70cc2501@nottingham.ac.uk> An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Garreth.Martin at nottingham.ac.uk Fri Mar 13 15:58:24 2026 From: Garreth.Martin at nottingham.ac.uk (Garreth Martin (staff)) Date: Fri, 13 Mar 2026 15:58:24 +0000 Subject: [Astro] [CAPT] Cake! In-Reply-To: References: Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Qixin.Xie at nottingham.ac.uk Mon Mar 16 08:00:00 2026 From: Qixin.Xie at nottingham.ac.uk (Qixin Xie) Date: Mon, 16 Mar 2026 08:00:00 +0000 Subject: [Astro] [CAPT] Particle Cosmology and Gravity Seminar this week: Miguel Montero (17th Mar) Message-ID: An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ CAPT mailing list CAPT at lists.nottingham.ac.uk https://lists.nottingham.ac.uk/mailman/listinfo/capt From Ella.Batchelor at nottingham.ac.uk Mon Mar 16 08:23:20 2026 From: Ella.Batchelor at nottingham.ac.uk (Ella Batchelor (staff)) Date: Mon, 16 Mar 2026 08:23:20 +0000 Subject: [Astro] [CAPT] CAPT Weekly Bulletin (w/c 16-03-26) Message-ID: Monday 16th March at 1.30pm, A113 CAPT ? Theoretical Physics Student Seminar Benjamin Muntz An introduction to CFTs - Part 2 --- Tuesdays at 11am, CAPT Foyer ? Astro Coffee Tuesdays at 11.30am, A113 CAPT ? Astronomy Journal Club Tuesday 17th March at 1pm, C12 Physics ? Particle Cosmology and Gravity Seminar Miguel Montero (IFT, Madrid) Quantum gravity on Riemann-flat Manifolds In recent work with B. Bento, we have been able to realize top-down string theory compactifications on Riemann-flat manifolds, where supersymmetry is broken at the KK scale and where one can find dS maxima with large radius and small vacuum energy in Planck units. These solutions are fully explicit and are under extraordinary (but not complete) control. I will review the construction of RFM's, explicit formulate to compute Casimir energies, describe explicit examples, no-go theorems, and potential connections of solutions like these to cosmology. Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d --- Wednesday 18th March at 3.45pm, C4 Physics ? Astronomy Seminar Lucy Oswald (Southampton) --- Thursday 19th March at 1pm, A113 CAPT ? Astronomy Lunch Talk Fiona Sawyer Uncovering the IGM temperature during reionisation with machine learning The thermal state of the IGM at high redshifts has the potential to serve as a useful probe of reionisation, providing information to help constrain, for example, the main drivers of reionisation through the thermal proximity effect around quasars. While previous approaches have relied on summary statistics to measure IGM temperature, new machine learning methods will offer the opportunity to measure the underlying physical properties of the IGM (including its temperature) at a much higher resolution. In this talk, I will discuss my work on making a neural network to predict the temperature of the IGM during reionisation, within quasar proximity zones. We find a good recovery of the underlying physical parameters within errors, including when realistic noise is added. I will also consider the challenges of moving from predicting on simulated data to observations and how well the network responds to them, paving the way for new temperature measurements during reionisation. Thursday 19th March at 3pm, A113 CAPT ? Particle Cosmology Journal Club --- Fridays at 4pm, CAPT Foyer ? CAPT Cakes --- If you have any events/visitors you would like included in next week?s bulletin, please let me know. Best wishes Ella Ella Batchelor (she/her) Administrator School of Physics & Astronomy University of Nottingham A112a Centre for Astronomy & Particle Theory University Park Nottingham, NG7 2RD +44 (0) 115 74 86778 | nottingham.ac.uk [cid:image001.png at 01DCB218.53F97990] Follow us facebook.com/uniofnottingham twitter.com/uniofnottingham youtube.com/nottmuniversity instagram.com/uniofnottingham linkedin.com/company/university-of-nottingham -------------- next part -------------- An HTML attachment was scrubbed... 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