A dataset provided by the European Space Agency

Proposal ID 074361
Title G354.4+0.0: the youngest Galactic supernova remnant?
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743610101

DOI https://doi.org/10.5270/esa-38oeqz5
Principal Investigator, PI Dr Jacco Vink
Abstract Although the supernova rate in the Milky Way is thought to be 3 per century,only two supernova remnants younger than 400 yr are known, Cas A and G1.9+0.4.Both these sources are X-ray synchrotron emitters, and in both these sourcesfreshly synthesized, radio-active Ti-44 has been detected. This year a new,small (1.6 arcmin) shell-type supernova remnant was discovered, G354.4+0.0,which is a good candidate to be the youngest supernova remnant in the Galaxy. Wepropose to observe G354.4+0.0 both with XMM-Newton, for detailed imagingspectroscopy, and with NuStar for characterizing the potential synchrotronemission and search for line emission caused by the decay of Ti-44 at 68 keV and78 keV.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-08-28T18:54:43Z/2014-08-29T13:59:23Z
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 2015-09-19T22:00:00Z
Keywords "potential synchrotron emission", "XMM", "supernova remnant", "sources freshly synthesized", "radio active ti", "imaging spectroscopy", "G354.4", "XMM-Newton", "78 kev", "line emission", "supernova rate", "xmm newton", "xray synchrotron emitters"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Jacco Vink, 2015, 'G354.4+0.0: the youngest Galactic supernova remnantquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-38oeqz5