| Proposal ID | 040443 |
| Title | X-ray Evolution of Classical Novae: Timescales for the SSS Phase |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404430201 |
| DOI | https://doi.org/10.5270/esa-ym27rhe |
| Principal Investigator, PI | Dr Guy Stringfellow |
| Abstract | The outbursts of novae are driven by a thermonuclear runaway at the base of anaccreted shell. Soft X-ray emission resulting from high surface temperatures onthe WD after outburst are expected, but seldom observed (SSS phase). Some novaeenter the SSS phase within the first year after outburst, and quickly turn offthereafter (the very fast ONeMg novae). Others (e.g., slow novae) are delayedyears after outburst before entering the SSS stage, which then lasts many years.ROSAT detected only 3 novae in their SSS state; XMM has observed 5, 3 which haveSSS spectrums. Insight into the diversity and evolution of novae can be gainedby determining when (or if) the SSS stage begins, when turnoff occurs, and howthis relates to composition and the mass of the WD. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-12-02T20:25:39Z/2007-04-13T18:21:39Z |
| 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 | 2008-05-01T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "accreted shell", "classical novae", "ROSAT", ".", "surface temperatures", "soft xray emission", "sss spectrums", "turnoff occurs", "x ray evolution", "thermonuclear runaway", "sss phase", "fast onemg novae", "novae enter", "XMM", " slow novae", "sss stage" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Guy Stringfellow, 2008, 'X-ray Evolution of Classical Novae: Timescales for the SSS Phase', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-ym27rhe |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |