A dataset provided by the European Space Agency

Name 074197
Title The quiescent emission of the first low-B soft gamma repeater


DOI https://doi.org/10.5270/esa-gegu7nf
Author Dr Nanda Rea
Description Soft gamma repeaters (SGRs) are part of a rapidly increasing group of X-ray sources exhibiting sporadic and powerful emission of short bursts and outbursts, believed to be magnetars, i.e. neutron stars powered by extreme magnetic fields ( Bsim10^{14}-10^{15} G). We have recently discovered the first SGR with a low magnetic field (Rea et al. 2010, Science, 330, 944; Rea et al. 2013, ApJ 770, 65), SGR 0418+5729 discovered in outburst after it emitted bursts similar to those of magnetars. We ask for a 120,ks XMM observation to measure SGR 0418+5729 .s quiescent flux and surface temperature, crucial for tuning the magnetar model as well as predict how many hidden magnetars there might be within the pulsar population (abridged).
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-08-13T21:26:34Z/2014-08-18T11:16:46Z
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 2015-10-07T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2015, 074197, 17.56_20190403_1200. https://doi.org/10.5270/esa-gegu7nf