A dataset provided by the European Space Agency

Proposal ID 069439
Title The new gamma-ray binary system 1FGL J1018.6-5856
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0694390101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0694390201

DOI https://doi.org/10.5270/esa-ugavlc7
Principal Investigator, PI Dr Andrea De Luca
Abstract Fermi-LAT unveiled a 16.6 day modulation in flux and spectral shape in thebright gamma-ray source 1FGL J1018.6-5856. Using Swift/XRT, we singled out theX-ray counterpart as a bright source, displaying a large flux and spectralmodulation along the 16.6 day cycle, remarkably stable from one cycle toanother, featuring a peculiar flare-like peak in phase with the gamma-raymaximum. With an O6V optical counterpart, 1FGL J1018.6-5856 is a new member ofthe class of gamma-ray binaries, possibly similar (but with surprisingdifferences!) to LS 5039. We propose a deep XMM-Newton observation devoted tostudy the sharp flare-like peak. Detailed (time-resolved) spectroscopy and asensitive search for pulsations will shed light on the physics of such a powerful, enigmatic particle accelerator.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2013-01-09T12:08:33Z/2013-01-10T19:34:50Z
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 2014-01-29T00:00:00Z
Last Update 2025-01-27
Keywords "ls 5039", "bright source", "gamma ray maximum", "spectral modulation", "xray counterpart", "shed light", "enigmatic particle accelerator", "sensitive search", "1fgl j1018", "J1018.6", "XMM-Newton", "gamma ray binary", "spectral shape", "o6v optical counterpart", "sharp flare", "fermi lat unveiled", "time resolved spectroscopy", "XMM", "deep xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Andrea De Luca, 2014, 'The new gamma-ray binary system 1FGL J1018.6-5856', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ugavlc7