A dataset provided by the European Space Agency

Name 087081
Title X-RAY SPECTRUM OF A PERIODIC QUASAR FROM THE DES: TESTING THE BINARY BLACK HOLE
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0870810101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0870810201

DOI https://doi.org/10.5270/esa-[xxxxxxx]
Author Prof Xin Liu
Description We propose joint NuSTAR-XMM-Newton observations of a periodically variable quasar recently found from the Dark Energy Survey (DES). The target is unique because its periodicity is highly significant and robust thanks to the sensitive DES imaging and a virgul20-yr long time baseline by combining DES with SDSS. The high sensitivity and long baseline are both crucial to rejecting false positives caused by quasars stochastic red noise variability. The proposed X-ray observations will test and distinguish two generic but different sets of models of circumbinary accretion disk simulations (a central cavity vs. minidisks), which predict dramatically different X-ray fluxes. The results will provide an independent and complementary test for the binary black hole hypothesis to explain the periodicity.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2020-08-02T14:35:55Z/2020-08-03T08:14:00Z
Version 18.02_20200221_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 2021-08-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2021-08-27T00:00:00Z, 087081, 18.02_20200221_1200. https://doi.org/10.5270/esa-[xxxxxxx]