
| Proposal ID | 076310 |
| Title | Search for Thermal Emission from the Quiescent Neutron Star SAX J1810.8-2609 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0763100101 |
| DOI | https://doi.org/10.5270/esa-ylcay3e |
| Principal Investigator, PI | Prof Deepto Chakrabarty |
| Abstract | SAX J1810.8-2609 is a neutron star LMXB transient with a very low quiescentluminosity. It is one of only three non-pulsars with evidence for only weakthermal quiescent emission, making it a prime source to test quiescent emissiontheories. Its quiescent emission is consistent with a pure power-law spectrumand does not require a soft (thermal) component, yet quiescent neutron starLMXBs are expected to have thermal emission associated with an accretion-heatedsurface. The lack of a thermal component would require the neutron star to becooler than can be explained by current heating and cooling models and mightrequire the designation of a new subclass of power-law-only quiescenttransients. We propose to make a deep search for thermal emission from SAX J1810.8-2609. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2015-10-09T15:19:52Z/2015-10-10T14:06:32Z |
| Version | 21.51_20241115_1113 |
| 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 | 2016-11-04T23:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "sax j1810", "quiescent transients", "neutron star", "cooling models", "prime source", "deep search", "low quiescent luminosity", "J1810.8", "thermal emission", "accretion heated surface", "thermal component", "power law", "quiescent emission", "soft thermal component" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Deepto Chakrabarty, 2016, 'Search for Thermal Emission from the Quiescent Neutron Star SAX J1810.8-2609', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-ylcay3e |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |