A dataset provided by the European Space Agency

Name 060498
Title Hard X-Ray Emission from Progenitors of Type Ia Supernovae


DOI https://doi.org/10.5270/esa-nfqf9fe
Author Dr Jennifer Sokoloski
Description Recurrent nova (RN) contain white dwarfs (WDs) whose masses are close to the Chandrasekhar limit. Some RN may thus be progenitors of type Ia supernovae (SNIa). But how do the WDs in these binaries accrete enough material to approach the Chandrasekhar limit? To address this question, and to develop a tool for finding SNIa progenitor candidates at an earlier stage along the path to the Chandrasekhar limit, we propose to test the degree to which hard X-ray emission is a marker for high WD mass. We thus propose to observe two RN that have no previous pointed X-ray observations in quiescence. Our targets both have red-giant mass donor stars, which makes them similar to the one RN known to produce strong, hard X-ray emission. This work is motivated in part by the advent of new hard X-ray surveys.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2010-03-01T14:36:38Z/2010-04-09T03:05:10Z
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 2011-05-07T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2011-05-07T00:00:00Z, 060498, 17.56_20190403_1200. https://doi.org/10.5270/esa-nfqf9fe