The Laser Interferometer Space Antenna (LISA) is a large mission of the European Space Agency. It will address the scientific theme of "The Gravitational Universe" by observing gravitational waves sources emitting between 0.02 milliHertz and 1 Hertz. LISA is formed by tree spacecrafts on heliocentric orbits exchanging laser beams over 2.5 millions kilometers in order to measure the deformation of spacetime of few pico-meters due to gravitational waves.

Titre:
Simulation et analyse de données pour une configuration réaliste de LISA

Description:

In August 2017 Virgo made its first gravitational-wave detections together with LIGO. The detection of the gravitational-waves emitted by the binary black-hole coalescence (GW170814) and the binary neutron star coalescence (GW170817, with its electromagnetic counterparts GRB170817a and AT2017gfo) had dramatic consequences for astrophysics, cosmology and tests of general relativity.

Context: The discovery, by the LIGO-Virgo collaboration on Sept. 14th 2015, of gravitational waves (GW) from the merger of two stellar-mass black holes, applauded by the whole scientific community, was unexpected in terms of astrophysical sources: two such heavy stellar-mass black holes (~30 solar masses) had never been seen before, although now, they likely constitute the tip of the iceberg. From this detection, several questions immediately arose: how can such black holes form, and how many are there in our local Universe and beyond?

The gravitational wave detectors run by LIGO/VIRGO collaboration have detected 4 gravitational wave (GW) signals from merging BHs. The data from the last (second) observational run are still being analyzed
and more detections might be announced shortly. The ground-based detectors are now offline for the further upgrade, and we expect a significant increase in the detection rate in the next observational period. In addition, the preparations for the space-based GW observatory, LISA, have already started. The LISA data will

LIGO/VIRGO collaboration has announced 4 confirmed detection of gravitational wave (GW) signals
from the merging binary black holes. This opens a new window in the astronomy: gravitational wave astrophysics.
There are three major efforts to search for GWs: LIGO-VIRGO detectors operating in the frequency range
between few Hz and kHz, LISA - space based detector which will be launched in 2034 and is sensitive
in the milli-Hertz band, PTA (Pulsar Timing Array) - uses the monitoring of millisecond (stable) pulsars
to detect GWs in the nano-Hertz band.

In late 2015, the Advanced LIGO-Virgo collaboration announced the first detections of a number of binary black holes using gravitational waves.  These detections have opened up the new field of gravitational wave astronomy.  In the next few years, there are a number of planned science runs that should provide many more detections.  An important aspect of the detection process is the fast and accurate estimation of the astrophysical parameters of the system.  We currently collaborate with 83 telescopes, satellites and neutrino detectors around the world.  To search f

Ingénierie mécanique et thermique : simulations et tests sur IGOSat

IGOSat est un projet issu du laboratoire d'excellence (LabEx) UnivEarthS, mis en place par les laboratoires AIM (Astrophysique et Interactions Multi-échelles), APC (AstroParticule et Cosmologie) et IPGP (Institut de Physique du Globe de Paris) de l'Université Paris Diderot. IGOsat fait partie du programme JANUS (CubeSats étudiants) de l’Agence Spatiale Française (CNES).

Ingénierie sur le Système de Contrôle d’Attitude de IGOSat

IGOSat est un projet issu du laboratoire d'excellence (LabEx) UnivEarthS, mis en place par les laboratoires AIM (Astrophysique et Interactions Multi-échelles), APC (AstroParticule et Cosmologie) et IPGP (Institut de Physique du Globe de Paris) de l'Université Paris Diderot. IGOsat fait partie du programme JANUS (CubeSats étudiants) de l’Agence Spatiale Française (CNES).

Ingénierie Logiciel Vol & Sol du satellite IGOSat

IGOSat est un projet issu du laboratoire d'excellence (LabEx) UnivEarthS, mis en place par les laboratoires AIM (Astrophysique et Interactions Multi-échelles), APC (AstroParticule et Cosmologie) et IPGP (Institut de Physique du Globe de Paris) de l'Université Paris Diderot. IGOsat fait partie du programme JANUS (CubeSats étudiants) de l’Agence Spatiale Française (CNES).