A dataset provided by the European Space Agency

Name 030143
Title Quiescent X-ray emission from ultracool dwarf 1RXS J115928.5-524717
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0301430101

DOI 10.5270/esa-h0rs7t3
Author Dr Valeri Hambaryan
Description We propose to perform XMM-Newton observations of a very low mass star 1RXS 115928.5-524717. Given the sensitivity of XMM-Newton over previous missions, we are confident that coronal X-ray emission can now be detected in the very lowest mass stars and substellar objects known. Therefore, the objective of this proposal is to make such detection and thereby establish the existence of magnetic activity at the very bottom of the main sequence and beyond. Our target is recently discovered a previously unknown, high proper motion ( approx ,1.1 ^{arcsec} ,yr ^{-1} ) member of the immediate solar neighborhood: a very low mass star (Sp type M9) detected only during an X-ray bright flare of duration 1.5-2 hours with ROSAT All-Sky Survey.
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Automatic Classification of Time-variab...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-01-01T19:12:15Z/2006-01-02T05:54:13Z
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 2007-01-24T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-01-24T00:00:00Z, 030143, 17.56_20190403_1200. https://doi.org/10.5270/esa-h0rs7t3