A dataset provided by the European Space Agency

Name 074293
Title Two candidates radio-quiet millisecond pulsars in Fermi unassociated sources


DOI https://doi.org/10.5270/esa-4ismfq9
Author Dr Fabio Acero
Description Multi-wavelength observations have been the key to identifying the many
unassociated gamma-ray sources detected by the Fermi-LAT telescope. In two of
the top ten brightest Fermi sources that remain unassociated, optical
observations of their error ellipses have revealed variable stars each
coincident with an X-ray source detected by Swift. In both cases, a putative
binary orbital period of has been identified from the optical variability,
indicating that these are candidate millisecond pulsars (MSPs) that may be the
counterparts to the bright gamma-ray sources. However, unlike all previous
gamma-ray MSPs detected by Fermi, there is no indication of radio emission from
either source.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-06-14T19:11:12Z/2014-06-15T15:37:52Z
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 2015-06-27T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Fabio Acero, 2015, 074293, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4ismfq9