| Name | 079083 |
| Title | HARD X-RAY PULSAR CANDIDATE THAT MAY DOMINATE >25KEV:NUSTAR-XMM OBS OF M31 BULGE |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0790830101 |
| DOI | https://doi.org/10.5270/esa-7203mri |
| Author | European Space Agency |
| Description | During our AO1 NuSTAR observation of the M31 bulge, we identified for the first time the counterpart to the single bright Swift source, Swift J0042.6+4112, that dominates M31a??s emission at E>25 keV. We propose new simultaneous observations with NuSTAR and XMM-Newton one year later to (A) properly constrain the simultaneous 0.5-80 keV spectrum of this source with higher S/N and by removing ambiguities due to its significant E< 10 keV variability and (B) look for variability in its hard X-ray emission since AO1. We will also monitor virgul30 X-ray binaries in the field, one of the richest local environments for old stellar populations outside the Galaxy, to provide better constraints on the nature of the resolved point sources (i.e., black hole binaries vs. neutron star binaries). |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2017-01-21T04:31:49Z/2017-01-21T22:01:49Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2018-03-29T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2018, Hard X-Ray Pulsar Candidate That May Dominate &Amp;Gt;25Kev:Nustar-Xmm Obs Of M31 Bulge, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7203mri |