| Proposal ID | 076470 |
| Title | What Makes Them Tick: Understanding the behaviour of Lanning 386 and J1923 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0764700101 |
| DOI | https://doi.org/10.5270/esa-vy4c5d4 |
| Principal Investigator, PI | Mr Mark Kennedy |
| Abstract | Lanning 386 and J1923 are new cataclysmic variables which do not fall into thenormal categories. Both systems show two distinct states, a low state similar toa dwarf nova, and a high state simlar to a SW Sextantis star,with strong He IIand the rarely seen C IV emission lines. Observations of J1923 lead us tobelieve that the accretion disk may be truncated before hitting the surface tothe white dwarf due to the presence of a strong magnetic field, similar to theintermediate polars. We propose observing both of these systems over severalepochs to determine whether the x-ray spectrum of these objects are hard orsoft, which will tell us whether these sytems are closer to SW Sextantis starsor intermediate polars while in the high state. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2015-04-12T10:49:53Z/2015-05-21T19:22:04Z |
| Version | 17.56_20190403_1200 |
| 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 | 2016-06-09T22:00:00Z |
| Keywords | "normal categories", "magnetic field", "j1923 lead", "xray spectrum", "sw sextantis star", "intermediate polars", "white dwarf", "cataclysmic variables", "accretion disk", "lanning 386", "iv emission lines", "dwarf nova", "sw sextantis stars" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Mark Kennedy, 2016, 'What Makes Them Tick: Understanding the behaviour of Lanning 386 and J1923', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vy4c5d4 |