A dataset provided by the European Space Agency

Name: Testing Evolutionary Scenarios for the Accreting ms Pulsar SAX J1808.4-3658
Published: 2020-10-04T22:00:00Z

Proposal ID	080433
Title	Testing Evolutionary Scenarios for the Accreting ms Pulsar SAX J1808.4-3658
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0804330201
DOI	https://doi.org/10.5270/esa-zmcc4m9
Principal Investigator, PI	Dr Alessandro Patruno
Abstract	We propose a 30 ks XMM observation of the accreting millisecond pulsar SAXJ1808.4--3658, during its next outburst. A measure of its orbital parameterswill help to decide whether the system is losing mass at an extraordinary rateor whether some (quasi)-cyclic variation of the orbit is currently ongoing.Understanding how the orbit is evolving will also provide precise orbitalephemeris which are crucial to improve the sensitivity of radio and gamma-raypulse searches.
Publications	X-Ray AGB Stars in the 4XMM-DR9 Catalog: Further Evidence for Companions \|Ortiz, R., Guerrero, M. A., \| ApJ \| 912-93 \| 2021 \| 2021ApJ...912...93O \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...912...93O The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions \|Pan, Zeyang, Qu, Zhijie, et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2019-09-07T01:46:33Z/2019-09-07T11:34:53Z
Version	19.17_20220121_1250
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.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2020-10-04T22:00:00Z
Keywords	"orbital parameters", "precise orbital ephemeris", "XMM", "J1808.4", "extraordinary rate", "losing mass", "testing evolutionary scenarios", "quasi cyclic variation"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Alessandro Patruno, 2020, 'Testing Evolutionary Scenarios for the Accreting ms Pulsar SAX J1808.4-3658', 19.17_20220121_1250, European Space Agency, https://doi.org/10.5270/esa-zmcc4m9