| Proposal ID | 030496 |
| Title | XMM-Newton Observations of Two Unusual Binary Pulsars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0304960101 |
| DOI | https://doi.org/10.5270/esa-br0s47s |
| Principal Investigator, PI | Dr Mallory Roberts |
| Abstract | In a recent radio survey of unidentified EGRET sources, we discovered two veryunusual binary pulsars: PSRs J1614-2230 and J1744-3922. The first source, a3.15ms binary pulsar with a companion too massive for standard binary evolutionscenarios, may become the second known gamma-ray pulsar. The second source, a172 ms pulsar in a tight 4.6 hr orbit around a low-mass companion, is likelyunrelated to the coincident EGRET source. However, it displays bizarre radioemission behavior that may indicate transient accretion. This could be thelong-sought missing link between accretion-powered and rotation-poweredneutron stars. Here we propose to test both hypotheses using brief XMM-Newtonsnapshots. X-ray detection of either source would be very exciting. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-08-17T06:30:12Z/2006-02-28T23:09:47Z |
| 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 | 2007-06-06T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "low mass companion", "psrs j1614 2230", "15ms binary pulsar", "binary pulsars", "xmm newton", "j1744 3922", "gamma ray pulsar", "unidentified egret sources", "XMM-Newton", "transient accretion", "missing link", "hr orbit", "172 ms pulsar", "XMM", "coincident egret source", "radio survey", "accretion powered", "xray detection" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Mallory Roberts, 2007, 'XMM-Newton Observations of Two Unusual Binary Pulsars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-br0s47s |