<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"MS Mincho";
panose-1:2 2 6 9 4 2 5 8 3 4;}
@font-face
{font-family:"MS Gothic";
panose-1:2 11 6 9 7 2 5 8 2 4;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Aptos Display";}
@font-face
{font-family:Aptos;}
@font-face
{font-family:Georgia;
panose-1:2 4 5 2 5 4 5 2 3 3;}
@font-face
{font-family:"\@MS Gothic";
panose-1:2 11 6 9 7 2 5 8 2 4;}
@font-face
{font-family:"\@MS Mincho";
panose-1:2 2 6 9 4 2 5 8 3 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Aptos",sans-serif;
mso-ligatures:standardcontextual;
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Aptos",sans-serif;
color:windowtext;}
p.xmsonormal, li.xmsonormal, div.xmsonormal
{mso-style-name:x_msonormal;
mso-style-priority:99;
margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:11.0pt;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="#467886" vlink="#96607D" style="word-wrap:break-word">
<div class="WordSection1">
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos",sans-serif">Tuesdays at 11am, CAPT Foyer – Astro Coffee</span></b><o:p></o:p></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt"> </span></b><o:p></o:p></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif">Tuesdays at 1pm, A113 CAPT – Astronomy Journal Club<o:p></o:p></span></b></p>
<p class="xmsonormal"><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif">---<o:p></o:p></span></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif">Wednesday 17<sup>th</sup> July at 11am, C27 Physics<o:p></o:p></span></b></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black">Enrico Cannizzaro (Lisbo, Instituto Superior Tecnico)<o:p></o:p></span></p>
<p class="xmsonormal"><i><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black">Black holes as laboratories for fundamental physics: Superradiant instabilities<o:p></o:p></span></i></p>
<p class="xmsonormal"><i><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black"><o:p> </o:p></span></i></p>
<p class="xmsonormal"><i><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">It is well known that spinning black holes (BHs) are unstable under ultralight massive bosonic perturbations. Due to this so-called superradiant instability,
a macroscopic bosonic condensate can form around the BH, leading to striking observable signatures, such as the emission of detectable gravitational waves from the condensate itself. Hence, this phenomenon represents a powerful tool to probe ultralight fields
beyond the Standard Model, such as axions or dark photons. Until recently, studies of the instability assumed the superradiant field to be free from interactions, aside from a minimal coupling to gravity. However, as number densities can reach extreme values
in the process, the effect of interactions can be crucial, even for very feebly interacting fields. In particular, interactions with the ambient plasma environment (namely an accretion disk or interstellar plasma) or couplings to other Standard Model fields
can dramatically change the evolution of these systems. In this talk, I will describe the role of interactions and environmental effects in different superradiant systems, showing their impact in the evolution of the instabilities.</span></i><b><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif"><br>
</span></b><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif">---</span><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black"> <i><o:p></o:p></i></span></p>
<p class="xmsonormal"><b><span style="font-size:16.0pt;font-family:"Aptos Display",sans-serif">Thursday 18<sup>th</sup> July at 1pm, A113 CAPT – Astronomy Lunch Talk<o:p></o:p></span></b></p>
<p class="xmsonormal"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black">Arghyadeep Basu (Max Planck Institute for Astrophysics, Garching)<o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:14.0pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">Impacts of Non-stellar Sources on IGM : Interpretation of Lyman-</span></i><i><span style="font-size:14.0pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">ɑ</span></i><i><span style="font-size:14.0pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB">
forest observations<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;color:black">The Epoch of Reionization (EoR) marks a critical phase in the evolution of the universe, yet remains poorly understood. While star-forming galaxies are acknowledged as key contributors to ionized
bubble formation, the extent of contribution from alternative sources such as shock-heated ISM or emission from X-ray binaries remains unclear. In this study, we employ cosmological radiative transfer simulations to explore the impact of diverse sources on
intergalactic medium (IGM) properties. Our focus is not merely data fitting, but rather understanding whether the interpretation of Lyman-</span></i><i><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">ɑ</span></i><i><span style="font-size:12.0pt;color:black">
forest observations is changed by using theoretical models incorporating non-stellar sources. By decoupling various sources, we also aim to discern their individual contributions to the reionization process. In this presentation, I’ll discuss our simulation
methodology and initial insights into our findings.</span></i><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
<p class="xmsonormal" style="margin-bottom:14.0pt"><span style="font-size:14.0pt;font-family:"Aptos",sans-serif;color:black">---</span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:16.0pt">Fridays at 4pm, CAPT Foyer – CAPT Cakes</span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:14.0pt">---</span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:16.0pt">VISITORS<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:14.0pt">Arghyadeep Basu (PhD student at the Max Planck Institute for Astrophysics, Garching) is visiting the group this week. Arghyadeep is currently seated in office A108. He will be giving a lunch talk this Thursday
on his recent work on modelling helium reionisation. <o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-ligatures:none;mso-fareast-language:EN-GB"> ---</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">If you have any events/visitors you would like including in next week’s bulletin, please let me know.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Best wishes<span style="mso-ligatures:none"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:6.0pt;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-GB">Ella<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:6.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#009BBD;mso-fareast-language:EN-GB">Ella Batchelor
</span></b><span style="font-family:"Arial",sans-serif;color:#009BBD;mso-fareast-language:EN-GB">(she/her)</span><o:p></o:p></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">Administrator</span></b><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">School of Physics & Astronomy</span><span lang="ZH-CN" style="font-size:9.0pt;font-family:"MS Gothic";color:#0F1245;mso-fareast-language:ZH-CN">
</span><span lang="EN-US" style="font-size:9.0pt;font-family:"MS Mincho";color:#0F1245;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">University of Nottingham</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">A112a Centre for Astronomy & Particle Theory</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">University Park</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">Nottingham, NG7 2RD</span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">+44 (0) 115 74 86778<b> </b></span><b><span lang="EN-US" style="font-size:9.0pt;color:#0F1245;mso-fareast-language:EN-GB">| </span></b><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0F1245;mso-fareast-language:EN-GB">
</span></b><span style="mso-fareast-language:EN-GB"><a href="http://nottingham.ac.uk/"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">nottingham.ac.uk</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="mso-fareast-language:EN-GB"><img border="0" width="484" height="109" style="width:5.0416in;height:1.1354in" id="Picture_x0020_2042549853" src="cid:image001.png@01DAD762.AFCA79A0"></span><span lang="EN-US" style="font-size:9.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Georgia",serif;color:#15769E;mso-fareast-language:EN-GB">Follow us</span></b><span lang="EN-US" style="font-size:9.0pt;color:#191919;mso-fareast-language:EN-GB"><br>
</span><span style="mso-fareast-language:EN-GB"><a href="http://facebook.com/TheUniofNottingham"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0000E9">facebook.com/uniofnottingham</span></a></span><span lang="EN-US" style="font-size:9.0pt;color:#191919;mso-fareast-language:EN-GB"><br>
</span><span style="mso-fareast-language:EN-GB"><a href="http://twitter.com/UniofNottingham"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0000E9">twitter.com/uniofnottingham</span></a></span><span lang="EN-US" style="font-size:9.0pt;color:#191919;mso-fareast-language:EN-GB"><br>
</span><span style="mso-fareast-language:EN-GB"><a href="http://youtube.com/nottmuniversity"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0000E9">youtube.com/nottmuniversity</span></a></span><span lang="EN-US" style="font-size:9.0pt;color:#191919;mso-fareast-language:EN-GB"><br>
</span><span style="mso-fareast-language:EN-GB"><a href="http://instagram.com/uniofnottingham"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0000E9">instagram.com/uniofnottingham</span></a></span><span lang="EN-US" style="font-size:9.0pt;color:#191919;mso-fareast-language:EN-GB"><br>
</span><span style="mso-fareast-language:EN-GB"><a href="http://linkedin.com/company/university-of-nottingham"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0000E9">linkedin.com/company/university-of-nottingham</span></a></span><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#191919"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>