We propose to continue the INTEGRAL/multi-wavelengh monitoring of GRS 1915+105 with the goal to understand the tight connections that exist between the different emitting media, and placed in a broader context, understand accreting-ejecting sources in general. We will still take advantage of other facilities we included in the past AOs (the Sardinia and Medicina radio telescopes, Insight-HXMT in the X-rays, and possibly NICER). We will also include infrared/optical (ESO) through dedicated proposals. We require 45 ks pointings taken every second revolution, in order to 1) probe the physics of accretion by studying the 0.5-500 keV emission of the source, 2) study the origin of the high variability of GRS 1915+105, 3) understand the connections between accretion and ejection processes, and 4) constrain physical models of emission processes through broad-band spectral and temporal analysis. Points 1) and 2) can be done by looking into the interplay between the soft and hard X-ray emitters (JEM-X and IBIS + HXMT and/or NICER), point 3) and 4) need contemporaneous broad-band coverages and timing studies (with NICER and HXMT). Besides these specific points this monitoring will allow us to accumulate more data and thus have a better view of the (rather unknown) behaviour of this source beyond 200 keV. It should be noted that GRS 1915+105 lies in a quite crowded field, with many variable sources such as X-ray binaries of all types, the enigmatic microquasar SS 433, and a couple of highly absorbed IGR sources. This survey will also permit all these sources to be studied in a regular manner. Such a monitoring will greatly participate to the INTEGRAL legacy by bringing new data for a dozen of exciting Galactic sources.
Magnetars and axion-like particles: probes with the hard X-ray spectrum - Fortin, Jean-Francois, Guo, Huai-Ke,Harris, Steven P.,Sheridan, Elijah,Sinha, Kuver (2021-06-01) http://ui.adsabs.harvard.edu/#abs/2021JCAP...06..036F
Primordial black hole dark matter in the context of extra dimensions - Friedlander, Avi, Mack, Katherine J.,Schon, Sarah,Song, Ningqiang,Vincent, Aaron C. (2022-05-01) http://ui.adsabs.harvard.edu/#abs/2022PhRvD.105j3508F
Temporal Coverage
2021-04-20T15:54:00Z / 2021-11-21T23:19:37Z
Version
1.0
Mission Description
The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
European Space Agency, Rodriguez, 2025, 'GRS 1915+105 INTEGRAL/MULTI-WAVELENGTH MONITORING PROGRAM: CLARIFYING ACCRETION-EJECTION MECHANISMS', 1.0, European Space Agency, https://doi.org/10.57780/esa-46s6a24
