A dataset provided by the European Space Agency

Proposal ID 067515
Title Low-level accretion in the quiescent neutron-star transient XTE-J1701-462
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0675150201

DOI https://doi.org/10.5270/esa-v91q6s8
Principal Investigator, PI Dr Jeroen Homan
Abstract Thermal emission from quiescent neutron stars is commonly used to constraintheir internal structure. Although often neglected, low-level accretion in thesesystems may significantly affect the interpretation of this thermal emission. Werecently began Swift monitoring of XTE J1701-462, to study low-level accretionand its impact on the quiescent properties. We detected episodes of enhancedactivity, to at least 1e35 erg/s (up from 5e33 erg/s). Here, we request a 45 ksXMM ToO observation of XTE J1701-462 to study the source spectrum during a newflare episode, to better understand the nature of low-level accretion flows andestimate the amount of heating of the neutron star that takes place.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-02-17T12:51:50Z/2012-02-18T03:00:28Z
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 2013-03-13T00:00:00Z
Keywords "1e35 erg", "quiescent properties", "XMM", "internal structure", "neutron star", "quiescent neutron stars", "5e33 erg", "enhanced activity", "xte j1701 462", "flare episode", "thermal emission", "low level accretion", "source spectrum"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Jeroen Homan, 2013, 'Low-level accretion in the quiescent neutron-star transient XTE-J1701-462', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v91q6s8