A dataset provided by the European Space Agency

Proposal ID 0420083
Obs ID 04200830001, 04200830002
Title Studying the pre-periastron flare of GX 301-2
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0420083
DOI https://doi.org/10.57780/esa-1t8uz58
Author Kreykenbohm
Abstract We propose to study the pre-periastron flare of GX 301-2 by observingfour pre-periastron flares resulting in a total observation time of600 ksec. This will allow us to study the structure (includingdensity and clumpiness) of the gas stream flowing from Wray 977 to GX 301-2which is intercepted by the neutron star prior to periastron passagegiving rise to the pre-periastron flare. As the source is verybright during the flare, spectra with high statistical quality up to100 keV will be obtained. These will then be used for phaseresolved spectroscopy to study the spectral variation (esp. thecyclotron line) with pulse phase and to search for a harmonicline. The obtained flare data will be complemented by substantialarchival data taken outside the flare for comparison. Such a studyis not possible with archival data, as there is almost no coverage of the pre-periastron flare.
Publications
Temporal Coverage 2007-01-10T11:31:05Z / 2007-06-27T21:53:17Z
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 2025-03-25T09:54:34Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Kreykenbohm, 2025, 'Studying the pre-periastron flare of GX 301-2', 1.0, European Space Agency, https://doi.org/10.57780/esa-1t8uz58