A dataset provided by the European Space Agency

Proposal ID 0620021
Obs ID 06200210001, 06200210002, 06200210003, 06200210004, 06200210005, 06200210006, 06200210007, 06200210008, 06200210009, 06200210010, 06200210011, 06200210012, 06200210013, 06200210014, 06200210015, 06200210016, 06200210017, 06200210018, 06200210019, 06200210020
Title INTEGRAL-ly monitoring GRS 1915+105 over the electromagnetic spectrum
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0620021
DOI https://doi.org/10.57780/esa-yam43mf
Author Rodriguez
Abstract GRS 1915+105 can be considered as the prototype microquasar. It does in short times what other sources do over several days or more. We, hence, can catch these variations very easily with pointing INTEGRAL, and thus have a unique chance to understand their physical origin through a broad band (spectral and temporal) study of the source. Placed in a multiwavelength context, this will permit us to understand the tight connections that exist between the different emitting media. Understanding this source will help us understand all microquasars. After very successful results obtained in the past AOs, we propose to continue the monitoring of GRS 1915+105 and its surroundings during AO6. We plan to (quasi-)simultaneously observe the source in the broadest waveband ever achieved, from radio (Ryle, GBT) to gamma-ray (GLAST) with special emphasis in the X-ray domain (INTEGRAL, and possibly RXTE). We require 20 ks INTEGRAL pointings taken every second revolution, in order to understand the origin of the high variability of GRS 1915+105 at X-ray energies. These coupled to observations at other wavelengths will permit us to probe the physical mechanisms at work in this source: the connections between accretion and ejection processes, the emission processes at high energy, the origin of the X-ray spectral transitions, and that of the variabilities. The latter two points will be based on the co-use of JEM-X in the soft X-rays and IBIS in the hard X/Gamma-rays, and on a simultaneous approach with RXTE. We aim at studying the interplay between the soft and hard X-ray components, the different time scales of their variations in relation with different physical models. For the study of the accretion-ejection mechanisms, we will provide simultaneous radio (Ryle, GBT) and infrared (ESO) observations, while the very high energy (with GLAST) will allow us to discriminates among different radiationprocesses and thus different models.
Publications
Temporal Coverage 2008-09-19T06:07:26Z / 2009-05-14T12:52:16Z
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.
Creator Contact https://www.cosmos.esa.int/web/integral/helpdesk
Date Published 2025-03-25T09:54:35Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Rodriguez, 2025, '"INTEGRAL-ly" monitoring GRS 1915+105 over the electromagnetic spectrum', 1.0, European Space Agency, https://doi.org/10.57780/esa-yam43mf