[Astro] [CAPT] CAPT Weekly Bulletin (w/c 01-06-26)

[Ella Batchelor (staff)]

Monday 1st June at 3pm, A113 CAPT – Theoretical Physics Student Seminar

Peter Du

Do we live in a simulation? (quantum gravity edition)

---

Tuesdays at 11am, CAPT Foyer – Astro Coffee

Tuesdays at 11.30am, A113 CAPT – Astronomy Journal Club



Tuesday 2nd June at 1pm, C12 Physics – Particle Cosmology and Gravity Seminar

Mariana Carillo González (Imperial/Southampton)

(A)dS Double Copy in Twistor Space


The double copy, which relates gravity to the square of Yang–Mills theory, is usually studied in flat spacetime and is known to hold both for scattering amplitudes and for classical field configurations. In this talk, I will present a new approach that extends these results to maximally symmetric curved spacetimes. The new relations are formulated in twistor space, a complex projective space that encodes solutions to the equations of motion as holomorphic data. First, I will discuss the case of AdS₃, where a double copy structure for bulk to boundary correlators and black hole solutions naturally arises in minitwistor space. Then, I will show how in (A)dS₄ one can construct bulk correlation functions using only twistors, dual twistors, and the infinity twistor as building blocks. The relation to coordinate space arises via nested Penrose transforms. The boundary limit of these correlators yields CFT correlators / wavefunction coefficients that satisfy the expected Ward identities and obey a simple double copy relation.



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 3rd June at 3.45pm, C4 Physics – Astronomy Seminar

Allison Noble (Arizona State U.)

Disrupting the Baryon Cycle in Cluster Galaxies and BCGs



Galaxies undergo an astrophysical balancing act between gas cooling and energy feedback; in cluster environments, this delicate equilibrium can be significantly disrupted through gas stripping, changes to gas accretion, shock-induced heating, or the suppression of star formation. Spatially-resolved observations of three critical ISM components — gas, dust, and stars — are crucial to understand the complex interplay between these mechanisms and the overall galactic baryon cycle within cluster galaxies. With kiloparsec-scale observations from ultraviolet to submillimeter wavelengths, I will discuss recent results from ongoing campaigns with ALMA and HST to map the molecular gas kinematics, dust continuum morphologies, star formation efficiency, and feedback in high-redshift cluster galaxies; these observations span the star-forming main-sequence cluster population to the most massive galaxies — the brightest cluster galaxy (BCG).  I will highlight evidence for elevated gas fractions, asymmetric gas kinematics, and potential ram-pressure stripping at high redshift, as well as the discovery of a 30 kiloparsec dust tail stemming from a BCG, potentially launched by AGN jets.  These studies are providing us with clues into environmental quenching, feedback, and the growth of cluster cores at the dawn of cluster assembly.

---

Thursday 4th June at 1pm, A113 CAPT – Astronomy Lunch Talk

Joe Butler



Thursdays 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<http://nottingham.ac.uk/>

[cid:image001.png at 01DCEF6B.3AB6A620]

Follow us
facebook.com/uniofnottingham<http://facebook.com/TheUniofNottingham>
twitter.com/uniofnottingham<http://twitter.com/UniofNottingham>
youtube.com/nottmuniversity<http://youtube.com/nottmuniversity>
instagram.com/uniofnottingham<http://instagram.com/uniofnottingham>
linkedin.com/company/university-of-nottingham<http://linkedin.com/company/university-of-nottingham>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nottingham.ac.uk/pipermail/astro/attachments/20260601/41d89abf/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 190221 bytes
Desc: image001.png
URL: <http://lists.nottingham.ac.uk/pipermail/astro/attachments/20260601/41d89abf/attachment-0001.png>
-------------- next part --------------
_______________________________________________
CAPT mailing list
CAPT at lists.nottingham.ac.uk
https://lists.nottingham.ac.uk/mailman/listinfo/capt