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<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Monday 18<sup>th</sup> May at 3pm, A113 CAPT – Theoretical Physics Student Seminar</span></b><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">---</span></b><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Tuesdays at 11am, CAPT Foyer – Astro Coffee<br>
<br>
Tuesdays at 11.30am, A113 CAPT – Astronomy Journal Club</span></b><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black"> </span></b><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Tuesday 19<sup>th</sup> May at 1pm, C12 Physics – Particle Cosmology and Gravity Seminar</span></b><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt">Graham A. White (Southampton)</span><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="color:black"> </span></b><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="color:black">Link to join:</span></b><span style="color:black"> </span><span style="color:#467886"><a href="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" target="_blank" title="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"><span style="color:#467886">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</span></a></span><span style="color:black"><br>
</span><span style="font-size:16.0pt;color:black">---</span><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Wednesday 20<sup>th</sup> May at 3.45pm, C4 Physics – Astronomy Weekly Seminar</span></b><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt">Dr Anik Halder (Cambridge)</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><i><span style="font-size:14.0pt;color:black">Physical properties and redshift distributions of KiDS-1000 galaxies using the pop-cosmos galaxy population model<o:p></o:p></span></i></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt"> </span><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><span style="font-size:11.0pt;color:black">Accurate redshift calibration and physically motivated source sample selection are central challenges for precision weak lensing cosmology. In this talk,
I will present our recent work on forward modelling redshift distributions and inferring physical properties of weak lensing galaxies in the Kilo-Degree Survey (KiDS-1000) using a generative model for the galaxy population. The framework enabling this work
is pop-cosmos, a calibrated galaxy population model that allows principled Bayesian inference of individual galaxy redshifts and physical properties for millions of KiDS-1000 sources. Validation against spectroscopic samples demonstrates low bias and scatter
in the inferred photometric redshifts, while physical property inference enables the construction of weak lensing catalogues that mitigate intrinsic alignment systematics. We also develop a forward-modelling framework to infer the redshift distributions of
the KiDS-1000 galaxies. By applying a KiDS data and survey selection model to synthetic photometric data of mock pop-cosmos galaxies, we directly characterize the redshift distributions in each of the five tomographic bins of KiDS-1000, thereby bypassing the
need for spectroscopic reweighting used in conventional redshift calibration methods. Overall, our results demonstrate how the pop-cosmos galaxy population model can deliver accurate redshift distributions as well as galaxy properties, crucial for connecting
galaxy evolution physics and weak lensing cosmology.<o:p></o:p></span></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><span style="font-size:16.0pt;color:black">---</span><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Thursday 21<sup>st</sup> May at 1pm, A113 CAPT – Astronomy Lunch Talk</span></b><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt">Emma Chapman<o:p></o:p></span></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt"><o:p> </o:p></span></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Thursday 21<sup>st</sup> May at 6pm, B1 Physics – Science Public Lecture</span></b><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt">Helen Russell<o:p></o:p></span></p>
<p class="xxxmsonormal" style="margin:0cm"><i><span style="font-size:14.0pt;color:black">Black Hole Feedback<o:p></o:p></span></i></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:16.0pt"> </span><o:p></o:p></p>
<p class="xxelementtoproof" style="margin:0cm;background:white"><b><span style="font-size:16.0pt;color:black">Thursdays at 3pm, A113 CAPT – Particle Cosmology Journal Club</span></b><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0cm"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">---</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0cm"><b><span style="font-size:16.0pt">Fridays at 4pm, CAPT Foyer – CAPT Cakes</span></b><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0cm"><span style="font-size:11.0pt">---</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0cm">If you have any events/visitors you would like included in next week’s bulletin, please let me know.<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><span style="mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></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><a href="http://nottingham.ac.uk/"><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue;mso-fareast-language:EN-GB">nottingham.ac.uk</span></a><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"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="mso-ligatures:none;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@01DCE448.364C98C0"></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>
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