A dataset provided by the European Space Agency

Name 086403
Title Preparing for the next "Nova of the Century..
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0864030101

DOI https://doi.org/10.5270/esa-[xxxxxxx]
Author Dr Jennifer Sokoloski
Description Changes in the amount of material reaching the accretion disk boundary layer can drastically modify its structure. We are witnessing such changes in a symbiotic recurrent nova, T CrB, for the first time. Two observations with NuSTAR and XMM have revealed that the accretion rate has increased by a factor of about 10 and that the boundary layer has become optically thick. The next step toward our understanding of the current state is to observe T CrB when it returns to its quiescence level, which may happen during AO19. This ToO observation will allow us to test the idea that nova eruptions in T CrB follow after multi-year periods of enhanced accretion onto the white dwarf due to an accretion disk instability. It will also help us study disk instablity events in large accretion disks.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2020-09-07T23:50:02Z/2020-09-08T14:47:06Z
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 2021-10-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2021-10-27T00:00:00Z, 086403, 18.02_20200221_1200. https://doi.org/10.5270/esa-[xxxxxxx]