A dataset provided by the European Space Agency

Name 067188
Title The prototype of intermittent pulsators, HETE J1900.1-2455


DOI https://doi.org/10.5270/esa-4f4jx5o
Author Dr Alessandro Papitto
Description HETE J1900.1-2455 is a highly peculiar accreting millisecond pulsar, as its pulses disappeared soon after the discovery of the source. Therefore, it can be viewed as a prototype of a system in between pulsating and non pulsating low mass X-ray binaries. We propose to observe it for the first time with XMM-Newton, to discriminate between models explaining the pulse disappearance. The proposed observation will firmly constrain the inner disc radius thanks to the modelling of the broad iron line that the source shows. Simultaneously, a pulse search at an unprecedented large sensitivity will be carried over. The results obtained will be used to shed light on the reason that causes the majority of low mass X-ray binaries hosting a neutron star not to show pulsations.
Publication No observations found associated with the current proposal
Instrument EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2011-09-19T15:11:00Z/2011-09-20T10:48:43Z
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 2012-10-12T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-10-12T00:00:00Z, 067188, 17.56_20190403_1200. https://doi.org/10.5270/esa-4f4jx5o