The astrophysics of accretion in compact binaries

Lead Research Organisation: University of Warwick
Department Name: Physics

Abstract

Unlike our Sun, the majority of stars find themselves in gravitationally bound pairs known as binary stars. The interaction between the two stars often leads to the formation of a compact pair with the lower mass donor star losing mass onto the more massive primary. Such interactions can produce very energetic objects as the potential energy that is released is converted into radiation and heat. The most extreme examples contain a very small but massive remnant of a star, which can be either a white dwarf for a star the mass of our Sun, or a neutron star or black hole for more massive stars. These two stars can orbit around each other in as little as a few minutes. I propose to employ novel imaging techniques, which are very similar to the CAT scanning methods used in hospitals, in order to study this interaction using the latest telescopes and instruments. This allows us to reconstruct images and even movies that show this interaction in detail despite the fact that such double stars are not resolved in even our biggest telescopes. I will use these reconstructed images of binaries to study the wide variety of physical processes that occur in these systems. These include turbulence, tidal interactions, outflows and jets, relativistic physics near black holes and the structure of matter under extreme conditions. My work relies on exploiting the latest suite of ground-based telescopes in conjunction with space-based observations at wavelengths that are not accessible from earth. In order to determine how binaries affect the populations of stars in galaxies such as our Milky Way, I also intend to search for many new systems using wide-field digital cameras attached to large telescopes. This combination will allow me to test our current ideas concerning the formation, structure and time evolution of a wide range of binary systems.

Publications

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Barnes A (2007) Kinematical studies of the low-mass X-ray binary GR Mus (XB 1254-690) GR Mus in Monthly Notices of the Royal Astronomical Society

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Barros S (2007) ULTRACAM photometry of the ultracompact binaries V407 Vul and HM Cnc in Monthly Notices of the Royal Astronomical Society

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BARROS, SCC And MARSH, TR And DHILLON, VS And GROOT, PJ And LITTLEFAIR, S And NELEMANS, G And ROELOFS, G And STEEGHS, D And WHEATLEY, PJ Photometry of V407 Vul and RXJ0806.3+1527: Twin systems ?

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Bassa C (2009) Optical spectroscopy of the quiescent counterpart to EXO???0748???676 in Monthly Notices of the Royal Astronomical Society

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Bloemen S (2013) Remarkable spectral variability on the spin period of the accreting white dwarf in V455 And in Monthly Notices of the Royal Astronomical Society

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Bloemen S (2010) Spin-resolved spectroscopy of the intermediate polar DQ Her Spin-resolved spectroscopy of DQ Her in Monthly Notices of the Royal Astronomical Society

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Calvelo D (2009) Doppler and modulation tomography of XTE J1118+480 in quiescence in Monthly Notices of the Royal Astronomical Society

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Carter P (2013) The helium-rich cataclysmic variable SBSS 1108+574 in Monthly Notices of the Royal Astronomical Society

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Carter P (2013) A search for the hidden population of AM CVn binaries in the Sloan Digital Sky Survey in Monthly Notices of the Royal Astronomical Society

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Copperwheat C (2009) ULTRACAM observations of two accreting white dwarf pulsators in Monthly Notices of the Royal Astronomical Society

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Copperwheat C (2011) SDSS J0926+3624: the shortest period eclipsing binary star The shortest period eclipsing binary star in Monthly Notices of the Royal Astronomical Society

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Copperwheat C (2011) The photometric period in ES Ceti The photometric period in ES Ceti in Monthly Notices of the Royal Astronomical Society

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Cornelisse R (2007) Optical spectroscopy of the low-mass X-ray binary GX 9+9 Optical spectroscopy of GX 9+9 in Monthly Notices of the Royal Astronomical Society

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Cornelisse R (2007) A signature of the donor star in the extra-galactic X-ray binary LMC X-2 in Monthly Notices of the Royal Astronomical Society

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Cornelisse R (2007) A detection of the donor star of Aquila X-1 during its 2004 outburst?? A detection of the donor star of Aql X-1? in Monthly Notices of the Royal Astronomical Society

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Cornelisse R (2013) A 2 h periodic variation in the low-mass X-ray binary Ser X-1 in Monthly Notices of the Royal Astronomical Society

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Cornelisse R (2012) The nature of the X-ray transient MAXI J0556-332 MAXI J0556-332 in Monthly Notices of the Royal Astronomical Society

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Deacon N (2009) The IPHAS-POSS-I proper motion survey of the Galactic plane in Monthly Notices of the Royal Astronomical Society

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Fontaine G (2011) DISCOVERY OF A NEW AM CVn SYSTEM WITH THE KEPLER SATELLITE in The Astrophysical Journal

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Galloway D (2013) PRECISION EPHEMERIDES FOR GRAVITATIONAL-WAVE SEARCHES. I. Sco X-1 in The Astrophysical Journal

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Girven J (2010) PG 1258+593 and its common proper motion magnetic white dwarf counterpart in Monthly Notices of the Royal Astronomical Society

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Gonzlez-Solares E (2008) Initial data release from the INT Photometric H Survey of the Northern Galactic Plane (IPHAS) in Monthly Notices of the Royal Astronomical Society

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Greiss S (2012) INITIAL DATA RELEASE OF THE KEPLER -INT SURVEY in The Astronomical Journal

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Greiss S (2014) KIC 11911480: the second ZZ Ceti in the Kepler field in Monthly Notices of the Royal Astronomical Society

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Greiss S (2014) Near-infrared counterparts to the Galactic Bulge Survey X-ray source population in Monthly Notices of the Royal Astronomical Society

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Groot P (2009) The UV-Excess survey of the northern Galactic plane in Monthly Notices of the Royal Astronomical Society

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Gänsicke BT (2010) Two white dwarfs with oxygen-rich atmospheres. in Science (New York, N.Y.)

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Hodgkin S (2021) Gaia Early Data Release 3 Gaia photometric science alerts in Astronomy & Astrophysics

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Horne K (2012) Astrotomography in Proceedings of the International Astronomical Union

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Jonker P (2010) Following the 2008 outburst decay of the black hole candidate H 1743-322â??in X-ray and radio in Monthly Notices of the Royal Astronomical Society

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Jonker P (2011) THE GALACTIC BULGE SURVEY: OUTLINE AND X-RAY OBSERVATIONS in The Astrophysical Journal Supplement Series

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Jonker P (2008) Optical and X-Ray Observations of IGR J00291+5934 in Quiescence in The Astrophysical Journal

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Jonker P (2007) The Cold Neutron Star in the Soft X-Ray Transient 1H 1905+000 in The Astrophysical Journal

 
Description Advanced our understanding of binary stellar systems and the physics of accretion.
Exploitation Route Sharing of data and techniques
Sectors Digital/Communication/Information Technologies (including Software),Education

 
Description Used by peers in scientific community
Sector Education
 
Description Royal Society MP Pairing Scheme
Geographic Reach National 
Policy Influence Type Citation in other policy documents
 
Description Long-term link with Harvard-Smithsonian Center for Astrophysics 
Organisation Harvard University
Department Harvard-Smithsonian Center for Astrophysics
Country United States 
Sector Academic/University 
PI Contribution Long-term research collaboration with High-Energy astrophysics Dividion
Collaborator Contribution Offer expertise as well as access to facilities
Impact N/A
 
Description Media work 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Media (as a channel to the public)
Results and Impact Several press releases, interviews and quotes in large popular science media.

Strong evidence for reaching broad audience, work cited on blogs and news sites.
Year(s) Of Engagement Activity 2009,2010,2011