<html 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=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Aptos;
panose-1:2 11 0 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:12.0pt;
font-family:"Aptos",sans-serif;
mso-ligatures:standardcontextual;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#467886;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Aptos",sans-serif;
color:windowtext;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:218833473;
mso-list-template-ids:2109488442;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0B7 ;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style>
</head>
<body lang="EN-US" link="#467886" vlink="#96607D" style="word-wrap:break-word">
<div class="WordSection1">
<p style="margin:0in"><span style="font-family:"Arial",sans-serif;color:black">Dear all,</span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:black">We are pleased to announce the Caltech Relativistic Astrophysics Summer School 2025, which will take place in Pasadena, CA from June 23-27, 2025.</span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="color:black"><a href="https://relastro-school-2025.caltech.edu/" title="https://relastro-school-2025.caltech.edu/"><span style="font-family:"Arial",sans-serif;color:#1155CC">https://relastro-school-2025.caltech.edu</span></a></span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333;background:white">High-energy astrophysics has made remarkable progress in describing some of the most extreme phenomena in the universe. Recent discoveries such as compact binary mergers and multi-messenger
gravitational wave events, fast radio bursts, ultra-high energy cosmic rays, and advances in our understanding of the transient high energy sky (radio, X-ray, gamma-ray) open up new possibilities for forefront research in these rapidly evolving fields.</span><span style="color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal" style="caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin-bottom:12.0pt;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">This summer school aims to provide beginning and advanced graduate students in astrophysics, physics, and adjacent fields with the knowledge and tools to fully take advantage of these exciting developments.<span class="apple-converted-space"> </span><br>
A particular focus of the school will be the application of emerging computational tools to provide high-fidelity models of high-energy astrophysical phenomena in strong gravity environments, e.g., around black holes or neutron stars.</span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">The one-week long summer school will include lectures on a broad range of topics:</span><span style="color:#212121"><o:p></o:p></span></p>
<ul style="margin-top:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px" type="disc">
<li class="MsoNormal" style="color:#333333;margin-top:12.0pt;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Black hole astrophysics</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Dynamo and turbulence</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Magnetohydrodynamics</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Multi-messenger gravitational wave events</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Neutrino astrophysics</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Neutron star magnetospheres</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Numerical Relativity</span><o:p></o:p></li><li class="MsoNormal" style="color:#333333;mso-list:l0 level1 lfo1;vertical-align:baseline;font-variant-ligatures: normal;font-variant-caps: normal;font-variant-alternates: normal;font-variant-numeric: normal;font-variant-east-asian: normal">
<span style="font-size:11.0pt;font-family:"Arial",sans-serif">Plasma kinetics</span><o:p></o:p></li></ul>
<p class="MsoNormal" style="caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">Applications are open now.<span class="apple-converted-space"> </span></span><span style="font-family:"Arial",sans-serif;color:#2A2A2A;background:white">To receive full consideration, applications should
be submitted by April 1, 2025. Partial financial support is available on a request basis.</span><span style="color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="color:black"> </span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#2A2A2A;background:white">For the organizers,</span><span style="color:#212121"><o:p></o:p></span></p>
<p style="margin:0in;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#2A2A2A;background:white">Elias R. Most, Sasha Philippov</span><span style="color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;caret-color: rgb(33, 33, 33);font-variant-caps: normal;orphans: auto;text-align:start;widows: auto;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="color:#212121"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
</body>
</html>