A dataset provided by the European Space Agency

Proposal ID 040026
Title Maintaining the Ephemeris of the Geminga Pulsar Until GLAST
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DOI https://doi.org/10.5270/esa-i3cgdwb
Principal Investigator, PI Prof Jules Halpern
Abstract The Geminga pulsar is unique among gamma-ray pulsars in having a precise andcontinuous, phase-connected ephemeris from 1973 up to the present. Since thedemise of the Compton Gamma-Ray Observatory in June 2000, the only practicalmethod of maintaining Geminga.s ephemeris is with X-ray observations. To extendour continuing XMM-Newton program on Geminga, we now request short observationstwice per year until 2007, when GLAST and/or AGILE will resume the gamma-raytiming. The principal scientific need for a phase-connected ephemeris is toprovide an absolute phase reference for ground-based observations, and tomonitor glitch activity such as that which recurred in 2002.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-10-02T07:04:22Z/2007-03-11T18:16:35Z
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2008-03-29T00:00:00Z
Keywords "glitch activity", "XMM", "practical method", "phase connected ephemeris", "geminga pulsar", "absolute phase reference", "XMM-Newton", "gamma ray", "principal scientific", "maintaining geminga", "gamma ray pulsars"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Jules Halpern, 2008, 'Maintaining the Ephemeris of the Geminga Pulsar Until GLAST', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-i3cgdwb