A dataset provided by the European Space Agency

Proposal ID 072075
Title Determining the nature of the unassociated Fermi-LAT gamma-ray sources
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0720750201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0720750301

DOI https://doi.org/10.5270/esa-nu1d6p4
Principal Investigator, PI Dr Roberto Mignani
Abstract Fermi opened new horizons in gamma-ray astronomy, with 1873 sources detected bythe LAT instrument in the first 2 years. However, <10% of them are identified,mostly as gamma-ray pulsars or Active Galactic Nuclei (AGN), while virgul60% are onlyassociated with potential gamma-ray emitters matched in object catalogues. Theremaining virgul30% have not even a potential association. The nature of thesesources is unknown and can only be investigated through multi-wavelengthobservations. Here, we propose to map the error boxes of selected LAT sourceswith XMM and the VLT. From the classification of their candidate X-raycounterparts, based on their X-ray and optical properties, we will then singleout those which are most likely gamma-ray emitters and close the identification loop.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2013-10-10T09:43:18Z/2013-10-15T07:56:00Z
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 2014-10-26T00:00:00Z
Keywords "XMM", "multi wavelength", "1873 sources", "candidate xray counterparts", "optical properties", "lat instrument", "gamma ray astronomy", "error boxes", "gamma ray emitters", "identification loop", "gamma ray pulsars", "object catalogues", "lat sources"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Roberto Mignani, 2014, 'Determining the nature of the unassociated Fermi-LAT gamma-ray sources', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-nu1d6p4