Sep 26, 2023
Le télescope Fermi-LAT poursuit son relevé systématique en rayons γ
Le satellite Fermi de la NASA a été lancé en juin 2008, et le télescope Fermi-LAT effectue un relevé systématique en rayons γ d’énergies proches du GeV couvrant la majorité du ciel toutes les 3 heures (et tout le ciel en au plus une semaine) depuis août 2008.
Feb 17, 2016
Launch of the Japanese X-ray Astronomy satellite Astro-H
The X-ray astronomy satellite Astro-H was successfully launched on 17 February 2016 at 17H 45 (UT 8H45) from the JAXA Tanegashima Space Center in Japan. The satellite was put into orbit 14 min later and the first tests started. ASTRO-H is a JAXA / NASA mission under the Japanese leadership and with an ESA participation. This new observatory aims to observe and study the hot and energetic Universe. Astro-H embeds several instruments that when combined cover the spectral band 0.3-600 keV.
Aug 15, 2013
Detection by XMM-Newton of a periodic absorption line close to the surface of a Magnetar
The intense and sporadic activity of Magnetars, rotating neutron stars, has its origin in the current model from their extreme magnetic field. At odds to the large majority of the sources of this kind, an exceptionally low value for the magnetic field of SGR 0418+5729 had been recently reported.
