A dataset provided by the European Space Agency

Name 060319
Title Probing Dark Matter in Draco with X-Ray Binaries


DOI https://doi.org/10.5270/esa-jio1d2l
Author Prof Kalvir Dhuga
Description The dwarf spheroidal (dSph) galaxies in the Local Group are of considerable
interest because of their unusually high mass-to-luminosity (M/L) ratios. The
^ated M/L ratios have led to claims of the presence of extraordinary amounts
of Dark Matter (DM) in the dSph galaxies. We propose a 70ks X-ray observation of
Draco in order to search for quiescent low-mass x-ray binaries (qLMXBs). These
data offer the potential for an independent estimate of the amount of DM in
Draco and provide an opportunity to test alternative models that employ initial
mass function (IMF) variations and internal dynamics of stellar populations to
explain the observed M/L ratios.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-08-04T03:40:16Z/2009-08-28T07:27:58Z
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 2010-09-15T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Kalvir Dhuga, 2010, 060319, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-jio1d2l