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Hi Everyone,</div>
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We hope that you're all doing well. We just wanted to remind you about today's seminar from James Nightingale in C4 at 15:45. See you all there!</div>
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Cheers,</div>
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Jesse</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Jesse Golden-Marx (staff) <Jesse.Golden-Marx@nottingham.ac.uk><br>
<b>Sent:</b> Tuesday, October 14, 2025 2:42 PM<br>
<b>To:</b> Nottingham Astro Group <astro@nottingham.ac.uk>; James Rice <James.Rice@nottingham.ac.uk>; candelazerbo <candelazerbo@gmail.com>; Mathias Urbano (staff) <Mathias.Urbano@nottingham.ac.uk><br>
<b>Subject:</b> Re: [Astro] Seminar this week: James Nightingale</font>
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Hi Everyone,</div>
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I hope that you're all looking forward to James Nightingale's visit tomorrow. We still have a few spots for lunch tomorrow (including for students). Please let me know if you would like to join for lunch. </div>
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Cheers,</div>
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Jesse</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Astro <astro-bounces@lists.nottingham.ac.uk> on behalf of Jesse Golden-Marx (staff) <Jesse.Golden-Marx@nottingham.ac.uk><br>
<b>Sent:</b> Monday, October 13, 2025 10:28 AM<br>
<b>To:</b> Nottingham Astro Group <astro@nottingham.ac.uk>; James Rice <James.Rice@nottingham.ac.uk>; candelazerbo <candelazerbo@gmail.com>; Mathias Urbano (staff) <Mathias.Urbano@nottingham.ac.uk><br>
<b>Subject:</b> [Astro] Seminar this week: James Nightingale</font>
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Hi Everyone,</div>
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I hope that all of you are doing well. Our first external seminar of the semester is this week. The seminar will be in C4 at 15:45. Our speaker is Dr. James Nightingale (Newcastle), a Nottingham alumnus. The title and abstract can be found below.
James will be arriving at Nottingham around 12:00 on Wednesday. If you would like to join for lunch, please let me know by tomorrow. We still have spots to sponsor a few postgraduate students who are interested. The schedule of events is listed below. </div>
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~13:00 — Lunch with seminar speaker </div>
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15:00 — Meeting with Postgraduate students (A113)</div>
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15:45 — Seminar (C4)</div>
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16:45 — Wine and Cheese reception</div>
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Additionally, James will be spending the night in Nottingham, so there will be a dinner with the speaker. We'll be going to Sanchan's Thai restaurant in Beeston. If you are interested in joining and haven't already messaged me (Jesse), please let me know
as soon as possible as I'm planning to make the reservation later this afternoon. </div>
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Cheers,</div>
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Jesse, Tutku, and Luke</div>
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<span style="font-family:Aptos,sans-serif; font-size:12pt; color:rgb(36,36,36)">Supermassive Black Holes, Galaxies and Dark Matter with Strong Gravitational Lensing</span></p>
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<span style="font-family:Aptos,sans-serif; font-size:12pt; color:black">In a strong gravitational lens, a background source galaxy appears multiple times, because its light is deflected by an intervening foreground galaxy’s mass. Lens modeling reverses the
source galaxy’s deflected emission and reconstructs the foreground lens’s projected gravitational potential at an unprecedented level of detail, providing Astronomer’s with a powerful tool to study the Universe. I present the first measurement of a supermassive
black hole (SMBH) mass using strong lensing, detecting a $\log_{10}(M_{\text{BH}}/M_{\odot}) = 3.27 \pm 2.12 \times 10^{10}$ SMBH in the $z = 0.451$ lens Abell 1201. I discuss the potential for lensing to measure additional SMBH masses and its implications
for black hole demographics. I then explore how strong lensing enhances traditional studies of galaxy structure, revealing complex features such as boxiness, diskiness, asymmetric twists, lopsidedness, and stellar-to-dark matter offsets—features that challenge
our current understanding of galaxy formation. Finally, I demonstrate how unseen dark matter substructures perturb lensed emission, providing a unique opportunity to test different dark matter models, provided that we can overcome limitations in our knowledge
of galaxy mass distributions.</span></p>
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<b>Jesse Golden-Marx, Ph.D.</b></div>
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<b>Senior Research Associate</b></div>
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Centre for Astronomy & Particle Theory</div>
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School of Physics & Astronomy</div>
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University of Nottingham</div>
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University Park, Nottingham, UK</div>
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