A dataset provided by the European Space Agency

Name 067418
Title Accreting pulsars in quiescence


DOI https://doi.org/10.5270/esa-hisou1r
Author Mr Victor Doroshenko
Description After more than 40 years of studies, surprisingly little is known on the emission of accreting pulsars at low-luminosity. It was suggested that already at 10^{35} ergs-s the onset of a centrifugal barrier should inhibit the accretion. On the other hand, pulsations during quiescence were reported for three transient pulsars, namely 1Avirgul0535+262, 4Uvirgul1145-619, and 1Avirgul1118-61. Accretion nature of the emission is suggested by short-term variability, energetics, hard X-ray spectrum and pulsations. It is unclear, however how the accretion proceeds in this case. Here, we propose to observe 1Avirgul0535+262, 4Uvirgul1145-619, and 1Avirgul1118-61 with XMM-Newton to study their spectral and timing properties to clarify the nature of pulsed emission at low luminosities.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-02-28T07:18:04Z/2012-02-28T23:59:39Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2013-03-23T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-03-23T00:00:00Z, 067418, 17.56_20190403_1200. https://doi.org/10.5270/esa-hisou1r