[Astro] [CAPT] CAPT Weekly Bulletin (w/c 04-05-26)

[Ella Batchelor (staff)]

Tuesdays at 11am, CAPT Foyer – Astro Coffee

Tuesdays at 11.30am, A113 CAPT – Astronomy Journal Club



Tuesday 5th May at 1pm, C12 Physics – Particle Cosmology and Gravity Seminar

Christopher McCabe (KCL)

Listening for Dark Matter



Ultraheavy dark matter (0.1–10 μg, ~10^20–10^23 GeV) eludes conventional detectors due to its low flux on Earth. We propose using large underwater hydrophone arrays to detect the thermoacoustic waves generated as these particles scatter off nuclei in seawater. We present a first-principles calculation of dark matter-induced acoustic signals, discuss frequency-dependent attenuation effects and the unusual background sources relative to normal dark matter searches. Taking the example of a 100 km^3 array in the Mediterranean, we show that this array could probe entirely unexplored parameter space.



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
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Wednesday 6th May at 3pm, C27 Physics – School Colloquium

Kevin Pimbblet (Hull)

A call for assessment reformation due to the existence of ChatGPT



Is education as we know it dead? Released in November 2022, ChatGPT is now regularly being used by students and instructors alike for a variety of different purposes within academia. Recent releases of ChatGPT and its analogues have shown incredible promise to scale and be able to pass elements of degree courses. In this talk, we will show our results of applying ChatGPT to an entire Physics BSc degree and how it achieves a (caveated) pass at a 2:1 standard. If it were not for laboratories (or performances in other disciplines), the implementation of invigilated exams, and vivas, it could achieve this outcome undetected. In general, coding tasks are performed exceptionally well, along with simple single-step solution problems. Multiple step problems and longer prose are generally poorer along with interdisciplinary problems, although there are ways to coax better performance. We strongly suggest that there is now a necessity to urgently re-think and revise assessment practice in physics (and other disciplines) due to the existence of AI such as GPT-4. We will describe its current form and limitations and predict what the future might hold including consideration of how AI can be embedded within the disciplinary context using a two lane approach.



Wednesday 6th May at 3.45pm, C4 Physics – Astronomy Weekly Seminar

Hannah Wakeford (Bristol)

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Thursday 7th May at 1pm, A113 CAPT – Astronomy Lunch Talk

Harley Brown
Origins of Intracluster Light Colour Gradients (in Simulations)


Tidal stripping as well as the ejection of stellar debris during galaxy mergers build up a diffuse luminous component in clusters known as the intracluster light (ICL), which can serve as a fossil record for cluster dynamics and also be used to trace a cluster’s dark matter halo. For these applications we first require a comprehensive understanding of the mechanisms by which the ICL assembles and where the stars of the ICL come from. In this talk, I will present one element of my in-progress work comparing ICL assembly across several different hydrodynamical simulations: whether simulations reproduce the radial ICL colour profiles noted in observations, and what processes produce these radial trends.



Thursdays at 3pm, A113 CAPT – Particle Cosmology Journal Club

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Fridays at 4pm, CAPT Foyer – CAPT Cakes
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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<http://nottingham.ac.uk/>

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