A dataset provided by the European Space Agency

Proposal ID 0720027
Obs ID 07200270001
Title The stability of the new hard X-ray tail of AXP 1E 1547.0-5408
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0720027
DOI https://doi.org/10.57780/esa-1dt86is
Author Den Hartog
Abstract On Jan. 22, 2009 a huge outburst of 1E1547.0-5408 commenced accompanied by strongly increased short-duration burst activity. INTEGRAL detected emission up to ~150 keV during 2 ToO observations, one performed for about 100 ks on Jan. 24-25, 2009 and a second for 600 ks from Jan. 28 to Feb. 8, 2009.Till this outburst no INTEGRAL detection could be established. Now, for the first time INTEGRAL discovered the turn-on of hard (photon index ~ 1.3; pulsed) emission. During the second INTEGRAL ToO the source was still (very) bright between 20 and 150 keV with no signs of fading. Its flux decreased only 30% compared to the first ToO measurement. The biggest question therefore is whether this hard tail will fade or will remain stable like the persistent hard X-ray emission from the other three AXPs showing hard spectral tails? Therefore we propose to reobserve 1E1547.0-5408 for 2 revolutions (~400 ks) during AO7.
Publications
Temporal Coverage 2010-03-30T21:55:06Z / 2010-04-02T23:46:28Z
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, Den Hartog, 2025, 'The stability of the new hard X-ray tail of AXP 1E 1547.0-5408', 1.0, European Space Agency, https://doi.org/10.57780/esa-1dt86is