A dataset provided by the European Space Agency

Proposal ID 067473
Title Study of the spectral soft excess in high luminosity transient pulsars
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0674730201

DOI https://doi.org/10.5270/esa-pxkbv15
Principal Investigator, PI Dr Nicola La Palombara
Abstract The spectra of many X-ray pulsars show a low-energy component in addition to themain power-law, which can be described with different models (both thermal andnon-thermal). The study of this feature is essential in order to cast light onthe physical processes on-going in accreting sources. Due to the low absorptionin its direction, the transient pulsars in the SMC, which can reach highluminosities (Lx > 1E38 erg/s), can provide high statistic spectra at lowenergies; two of them (XTE J0111-7317 and RX J0059.2-7138) have already shown aclear excess during their outburst. Therefore we ask to perform a triggeredobservation with XMM of a selected sample of transient pulsars in the SMC, ifthey undergo a bright outburst, in order to characterize the properties of the soft excess.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-03-14T19:22:34Z/2014-03-15T01:12:34Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2015-04-07T22:00:00Z
Keywords "main power law", "low absorption", "statistic spectra", "rx j0059", "bright outburst", "soft excess", "low energies", "xte j0111 7317", "spectral soft excess", "luminosities lx", "low energy component", "J0059.2", "physical processes", "XMM", "cast light", "accreting sources", "xray pulsars", "luminosity transient pulsars", "transient pulsars", "1e38 erg"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Nicola La Palombara, 2015, 'Study of the spectral soft excess in high luminosity transient pulsars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pxkbv15