A dataset provided by the European Space Agency

Proposal ID 050217
Title Long term monitoring of SGR 1806-20 after the Giant Flare
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DOI https://doi.org/10.5270/esa-nef3sns
Principal Investigator, PI Dr Sandro Mereghetti
Abstract SGR 1806-20 has recently emitted the most powerful giant flare ever observedfrom a Soft Gamma-ray Repeater. This probably involved a large scalerearrangement of the magnetosphere leading to observable variations in theproperties of its persistent X-ray emission. Comparison of the pre-flareXMM-Newton observations with those obtained after this event supports a magnetarscenario in which the effects of a twisted magnetosphere are taken into account.We propose to continue our monitoring of SGR 1806-20 initiated in AO-5 in orderto study the long term effects of the Giant Flare and how the source evolvestoward quiescence after this once-in-a-lifetime event.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-09-26T15:17:46Z/2008-04-02T22:18:03Z
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 2009-06-05T00:00:00Z
Last Update 2025-01-27
Keywords "magnetosphere leading", "XMM-Newton", "magnetar scenario", "observable variations", "source evolves", "powerful giant flare", "persistent xray emission", "event supports", "scale rearrangement", "XMM", "twisted magnetosphere", "lifetime '' event", "term effects", "giant flare", "sgr 1806"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Sandro Mereghetti, 2009, 'Long term monitoring of SGR 1806-20 after the Giant Flare', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-nef3sns