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Proposal ID 050319
Title Why are millisecond pulsar magnetic fields low and how do their X-rays arise?
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DOI https://doi.org/10.5270/esa-0669brp
Principal Investigator, PI Dr Natalie Webb
Abstract Binary millisecond pulsars (MSPs) found in the field are thought to be.recycled. from accreting pulsars. These MSPs have short periods, low spindownrates (Pdot) and consequently low surface magnetic fields (Bs) as Bs isproportional to (Pdot P)^0.5. It is unclear, however, how the MSP surfacemagnetic field can evolve from the high fields observed in pulsars to the lowMSP values. Two models have been proposed to explain this. Also, the origin ofthe high energy emission is unclear as too few MSP X-ray observations have beenmade to differentiate between competing models. With these XMM-Newtonobservations of four MSPs previously unobserved in X-rays, we will discriminatebetween differing models describing the magnetic field evolution and the high energy emission origin.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-02-17T10:05:04Z/2008-04-20T20:32:30Z
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 2009-06-10T00:00:00Z
Keywords "accreting pulsars", "low msp values", "XMM", "differing models describing", "magnetic field evolution", "energy emission", "energy emission origin", "short periods", "arise ?.", "XMM-Newton", "msp xray", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Natalie Webb, 2009, 'Why are millisecond pulsar magnetic fields low and how do their X-rays arisequestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0669brp