<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;">Dear colleagues<o:p></o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;"><o:p> </o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;">apologies if you receive this more than once. <o:p></o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;"><o:p> </o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;">As part of the University of Hamburg's Excellence Cluster "Quantum Universe" there are two open positions related to the theory/modelling of compact object mergers:<o:p></o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal; font-family: Calibri, sans-serif;"><o:p> </o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px; font-family: Calibri, sans-serif;"><o:p></o:p></p><span style="font-family: Calibri, sans-serif;">i)</span><span style="font-family: Calibri, sans-serif;"> </span><b style="font-family: Calibri, sans-serif;">Postdoc "Neutron star - black hole mergers</b><font face="Calibri, sans-serif"><b>”</b></font><div><br></div><div><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;"><span style="background: white;">The specific topic is related to mergers of black holes with neutron stars and their various multi-messenger signatures including gravitational wave, electromagnetic and neutrino signals. The successful candidate possesses demonstrated expertise in the relevant areas of theoretical astrophysics (general relativity, hydrodynamics, nuclear equations of state, neutrino physics/transport, nuclear reactions and radiative transfer), in code development with compiled programming languages and in computational physics/supercomputing. Candidates with expertise in the construction of numerical relativity initial conditions are particularly encouraged to apply.</span><o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">The application <b>deadline is December 22, 2025</b>.<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">For more information please contact Stephan.Rosswog@uni-hamburg.de<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">The application has to be submitted via the application system of the University of Hamburg, please see <a href="https://www.uni-hamburg.de/stellenangebote/ausschreibung.html?jobID=7bd2c136b39027d4ff9feefaa970abcca8ad50b5" style="color: rgb(149, 79, 114);">https://www.uni-hamburg.de/stellenangebote/ausschreibung.html?jobID=7bd2c136b39027d4ff9feefaa970abcca8ad50b5</a> for more information.<o:p></o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal;"><o:p><br></o:p></p><p class="MsoNormal" style="margin: 0in; line-height: normal;"><o:p> </o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">ii) <b>PhD position "Signatures of beyond-standard-model physics in neutron star mergers"<o:p></o:p></b></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;"><span style="color: rgb(78, 78, 78); background: white;">The project will explore potential signatures of beyond standard model physics in the merger of two neutron stars. The ideal candidate has knowledge of general relativity, hydrodynamics, particle physics and computational physics with compiled programming languages. </span><o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">The application <b>deadline is December 22, 2025</b>.<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">For more information please contact Stephan.Rosswog@uni-hamburg.de and/or Sam.Witte@physics.ox.ac.uk<o:p></o:p></p><p class="MsoNormal" style="margin: 0in 0in 8pt; line-height: 18.4px;">The application has to be submitted via the application system of the University of Hamburg, please <a href="https://www.uni-hamburg.de/stellenangebote/ausschreibung.html?jobID=110962f7bfc27737fd7d5be6b2f31a6f9cabf358" style="color: rgb(149, 79, 114);">see https://www.uni-hamburg.de/stellenangebote/ausschreibung.html?jobID=7bd2c136b39027d4ff9feefaa970abcca8ad50b5</a> for more information.<o:p></o:p></p></div><div>Best wishes</div><div>Stephan</div><div><br></div><div>----------------------------------------------<br><div><div>Prof. Dr. Stephan Rosswog <br>Computational High-Energy Astrophysics<br><br>The Oskar Klein Centre for Cosmoparticle Physics<br>Department of Astronomy, Stockholm University<br>AlbaNova, Roslagstullbacken 21<br>SE-10691 Stockholm, Sweden<br><br>Email: stephan.rosswog@astro.su.se<br>Tel.: +46 (0)8 5537 8529<br>URL: http://compact-merger.astro.su.se/</div>
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