A dataset provided by the European Space Agency

Proposal ID 0740013
Obs ID 07400130061, 07400130064, 07400130065, 07400130066, 07400130067
Title Target of Opportunity Observation(s) of Known and Unknown X-ray Pulsating Transients in Outburst
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0740013
DOI https://doi.org/10.57780/esa-divusum
Author Santangelo
Abstract We propose a Target of Opportunity Observation whenever one of the Known Accreting Pulsars enters an outburst. Part of the proposal are also the New Accreting Pulsars discovered by INTEGRAL or any othercurrent High Energy mission. We request a total of 800 ksec divided into: (a) three deep observations, 400 ksec in total, to be performed at the rise (100 ks), at the peak (100 ks), and at low luminosity in the declining phase of the outburst (200 ks); (b) a series of eight pointings (50 ksec each) to monitor the source along the outburst. The science goals of the proposal are: (1) The understanding of the accretion regime, super- vs. sub-Eddington, through the monitoring of the spectral parameters (mainly the cyclotron line parameters) along the outburst. (2) The study of magnetospheric instabilities through the observations of the recently discovered flares in the rising part of the outburst. (3) The study of the geometry/physics of the emission through the observation with high statistics, at different luminosities, of the phase dependence of the spectral parameters as well as of the energy dependent pulse profiles. This allows the measurement of the line shapes of the CRSFs (fundamental and harmonics) to test the theoretical models proposed for line formation.
Publications
Temporal Coverage 2010-04-03T18:27:09Z / 2010-04-17T23:53:57Z
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 2025-03-25T09:54:36Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Santangelo, 2025, 'Target of Opportunity Observation(s) of Known and Unknown X-ray Pulsating Transients in Outburst', 1.0, European Space Agency, https://doi.org/10.57780/esa-divusum