{"id":158069,"date":"2025-03-14T03:00:27","date_gmt":"2025-03-14T02:00:27","guid":{"rendered":"https:\/\/www.cde.ual.es\/?p=158069"},"modified":"2025-03-13T14:09:51","modified_gmt":"2025-03-13T13:09:51","slug":"phd-student-in-astrophysics-sweden","status":"publish","type":"post","link":"https:\/\/www.cde.ual.es\/en\/phd-student-in-astrophysics-sweden\/","title":{"rendered":"PhD – Student in Astrophysics – Sweden"},"content":{"rendered":"

\"\"<\/a>The position is located in the Astrophysics Division of the Department of Physics to collaborate with Ross Church on binary population synthesis, supporting preparations for LISA. LISA will be a space-based gravitational-wave interferometer, composed of three spacecraft flying in a triangular formation with laser interferometers along each arm. It will detect gravitational waves in the milliHz range from the assembly and merger of high-redshift supermassive black holes, as well as from binary star systems in the Milky Way.<\/span><\/p>\n

The project will also explore the connection between LISA and GaiaNIR. GaiaNIR proposes an all-sky astrometric survey in infrared wavelengths, aiming to extend Gaia science to the dust-obscured galactic bulge and center. There is overlap between the work needed to prepare for observations of compact binary systems with LISA and GaiaNIR’s pre-mission studies.<\/span><\/p>\n

Job Duties<\/span><\/strong><\/p>\n

The student’s main research project is to produce a LISA model galaxy containing a synthetic sample of compact binary systems, calculated using the most up-to-date stellar and binary physics, and distributed in a Galaxy model based on results from the Gaia space mission and ground-based surveys. The result will be a reliable prediction of the galactic population of LISA sources and the resulting gravitational wave background, as well as a quantification of the uncertainty. This will provide a realistic simulated noise background for the LISA analysis process and allow quantification of how many binary systems can be recovered from the noise.<\/span><\/p>\n

The student will collaborate with a postdoctoral researcher working on developing a global analysis solution for gravitational wave data from the LISA mission. The LISA model galaxy will be used to generate a realistic model of the LISA signal from galactic sources.\u00a0<\/span><\/p>\n

The student will also apply the model galaxy to mission definition studies for GaiaNIR. They will use the LISA model galaxy to predict faint star populations\u2014including, but not limited to, binaries\u2014in the central Milky Way, understand the impact of crowding on satellite design decisions, and evaluate and plan multi-messenger science cases where targets are observed with both LISA and GaiaNIR.<\/span><\/p>\n

The main responsibilities of doctoral students are to pursue their research studies, which includes participating in research projects and postgraduate courses. Their work may also include teaching and other departmental duties (maximum 20%).<\/span><\/p>\n

Requirements<\/span><\/strong><\/p>\n

A person meets the general admission requirements for postgraduate courses and programs of study if:<\/span><\/p>\n