GT- 4U1626-67 is a 7.7 pulsar with unusual properties. The binary has anextremely small mass function, which may imply that the mass donating star hasextremely low mass, and may be just the burnt-out core of a more massiveprogenitor. This fact may be related to the unusually strong Ne Ly alphaemission feature seen in the ASCA spectrum, possibly a sign of anomalousabundances. A high resolution RGS spectrum will address the abundance issue,as well as clarify the puzzling physical conditions in the line emitting gas.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-04-03T01:52:44Z/2001-08-24T07:47:46Z
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.
European Space Agency, Dr Albert Brinkman, 2002, 'High Resolution Spectroscopy of 4U1626-67', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-07dbsv9
