| Proposal ID | 050641 |
| Title | The unidentified source HESS J1702-420 and the possible nebula of PSR J1702-4128 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0506410101 |
| DOI | https://doi.org/10.5270/esa-ps4ky13 |
| Principal Investigator, PI | Dr Yves Gallant |
| Abstract | We propose XMM-Newton observations to examine the nature of the unidentified VHEgamma-ray source HESS J1702-420. The VHE morphology shows a tail towards PSRJ1702-4128, and we propose deeper X-ray observations of a field containing thispulsar to confirm if it exhibits an asymmetric X-ray nebula, for which there issome evidence in archival ASCA data. If so, this would be the oldest and leastenergetic pulsar yet found to power a VHE and X-ray nebula. The proposedexposure should also allow a confirmation of the more localised excess seen atthe pulsar position with Chandra. Finally, the proposed observation would alsomore than triple the XMM-Newton exposure on G344.7-0.1, a supernova remnantwhich shows some evidence of containing a plerionic component. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-09-13T03:48:39Z/2007-09-13T14:34:48Z |
| 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 | 2008-10-25T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "XMM-Newton", "xray nebula", "plerionic component", "psr j1702 4128", "asymmetric xray nebula", "localised excess", "xmm newton exposure", "xmm newton", "vhe morphology", "energetic pulsar", "archival asca data", "deeper xray", "supernova remnant", "G344.7", "pulsar position", "HESS" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Yves Gallant, 2008, 'The unidentified source HESS J1702-420 and the possible nebula of PSR J1702-4128', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ps4ky13 |