A dataset provided by the European Space Agency

Proposal ID 1540022
Obs ID 15400220015
Title Measuring the High Energy Emission of Millisecond X-Ray Pulsars in Outburst
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:1540022
DOI https://doi.org/10.57780/esa-jxvrzaw
Author Tsygankov
Abstract We propose to perform two 170 ks INTEGRAL ToO observations of a transient millisecond X-ray pulsar in outburst. To constrain the broadband spectrum we also request one 30 ks simultaneous NuSTAR and two 50 ks XMM-Newton observations. The target can be either one of the fifteen known transient accreting millisecond X-ray pulsars (AMXPs) in the case of a new outburst or a newly observed object of this class. These observations allow us to study the broad band spectrum in detail from hard to soft X-ray energies as well as the timing properties or eclipsing features of the source during its outburst. The high-statistics spectral information make it possible to disentangle the contributions of soft black body, reflection (if any) and hard Comptonized spectral components. Moreover, we will detect type-I X-ray bursts, and/or for the first time also burst oscillations at high-energy (if present). In particular we will be able to study the energy spectrum in a broad energy range (0.1-300 keV) and with unprecedented high-sensitivity above 20 keV. The INTEGRAL and XMM-Newton observations will also allow a timing analysis to study the pulse profile, time lags and pulsed spectrum, and so will provide important constraints on emission mechanisms.Similar proposals were approved for the INTEGRAL AO2-AO14 cycles, and during these years our ToO has been triggered eight times, i.e., in 2003 we observed XTE J1807-294, in 2004, 2005, 2009, 2011, and 2013 we triggered on newly discovered sources IGR J00291+5934, HETE 1900.1-2455, IGR J17511-3057, IGR J17498-2921, and IGR J18245-2452, respectively. In 2015, we triggered on IGR J00291+5934 and SAX J1748.5-2021 (data have been made public, because it was not clear whether the source in outburst was the AMXP).
Publications
Temporal Coverage 2018-08-17T14:04:59Z / 2018-08-27T18:21:30Z
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 2026-03-05T13:06:00Z
Keywords INTEGRAL gamma-ray data, ESA INTEGRAL mission dataset, gamma-ray astronomy observations, high-energy astrophysics data, IBIS imaging data, SPI spectrometer data, JEM-X X-ray monitoring data, OMC optical monitoring data, coded mask telescope observations, gamma-ray spectroscopy dataset, MeV astrophysics data, keV–MeV photon observations, gamma-ray burst observations dataset, black hole gamma-ray data, neutron star high-energy observations, positron annihilation 511 keV line data, Galactic Center gamma-ray emission dataset, supernova nucleosynthesis gamma-ray lines, active galactic nuclei high-energy data, transient astrophysical source monitoring, calibrated photon event lists, gamma-ray light curves, high-energy spectra data, sky maps gamma-ray, time-series astrophysical observations, long-term gamma-ray monitoring dataset
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Tsygankov, 2026, 'Measuring the High Energy Emission of Millisecond X-Ray Pulsars in Outburst', 1.0, European Space Agency, https://doi.org/10.57780/esa-jxvrzaw