| 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 | 2025-08-04 |
| Keywords | "XMM", "gamma ray pulsar", "XMM-Newton", "transient accretion", "radio survey", "binary pulsars", "hr orbit", "accretion powered", "unidentified egret sources", "coincident egret source", "xmm newton", "172 ms pulsar", "missing link", "j1744 3922", "psrs j1614 2230", "xray detection", "low mass companion", "15ms binary pulsar" |
| 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 |