A dataset provided by the European Space Agency

Name 040139
Title New ultracompact binaries, new opportunities: the case for 1A 1246-588


DOI 10.5270/esa-1nyx73k
Author Dr Jean in .t Zand
Description 1A 1246-588 is a persistently accreting low-mass X-ray binary at a distance of 5 kpc and with an absorption of NH=4E21 cm-2. The persistent luminosity is ~0.5% of the Eddington limit. This puts the source in an interesting accretion regime, possibly due to an ultracompact binary orbit. We propose to observe 1A 1246-588with XMM-Newton and VLT-FORS2 to secure the suspected optical counterpart and ultracompact nature, carry out high-resolution spectroscopy of suspected anomalous abundances of Ne, Fe and O with RGS and H, He, C and O with VLT-FORS2, and to search for an orbital period in the X-ray lightcurve to investigate the evolutionary history of the binary.
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Revealing the broad iron Kalpha line in Cygnus X-1 through simultaneous XMM-Newton...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-08-31T21:01:54Z/2006-09-01T08:31:36Z
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 2007-09-30T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-09-30T00:00:00Z, 040139, 17.56_20190403_1200. https://doi.org/10.5270/esa-1nyx73k