Dictionary definition: accretion disc

Article: Lowest mass white dwarf found in Milky Way galaxy
The Hindustan Times;  April 18, 2007 ;     697 words ... ... Astronomers have found the lowest mass white dwarf known in our galaxy: a Saturn-sized ... have also spotted the source of the white dwarf's radical weight-loss plan. According ... an unseen companion, another likely white dwarf, has sucked away much of the tiny white ...

Article: White dwarf in pas de deux: Cooler, slower.
Science News;  June 3, 1995 ;     700+ words ... ... the elderly, shrunken star known as a white dwarf. Left alone, it slowly radiates heat ... variables. But new findings suggest that a white dwarf locked in a gravitational embrace with ... gas to an object much denser than a white dwarf--a neutron star or black hole. The ...

Article: White Dwarf Pulses Like a Pulsar
U.S. Newswire;  January 2, 2008 ;     700+ words ... ... completely different story. At least one white dwarf, known as AE Aquarii, emits pulses ... Crab Nebula, but were seeing it in a white dwarf," says Koji Mukai of NASA Goddard ... behavior has ever been observed in a white dwarf." Mukai is co-author of a paper ...

Article: Astronomers discover white dwarf that emits X-rays ...
The Hindustan Times;  January 3, 2008 ;     593 words ... ... by astronomers has indicated that a white dwarf star in the Crab Nebula is emitting ... Nebula, but we're seeing it in a white dwarf," said Koji Mukai of NASA Goddard ... the wake of stellar death. Though a white dwarf forms when a star similar in mass to ...

Article: Stellar mystery solved. (Nova Cygni's magnetic white ...
Popular Science;  August 1, 1988 ;     700+ words ... ... be the explosion of a highly magnetic white dwarf star --an object with the huge mass ... known such binary systems containing white dwarf stars, but only 14 of the dwarfs are ... things happen when one star is a magnetic white dwarf. As the dwarf revolves with the normal ...

Article: Extremely magnetic degenerate dwarf. (white dwarf ...
Science News;  April 19, 1986 ;     700+ words ... ... gauss (MG), recently found in the white dwarf PG 1031+234 by a group of astronomers ... calculation of the upper limit on a white dwarf's magnetic field, but he expects ... extreme range -- another degenerate white dwarf, catalogued as Grw +70 degrees 8247 ...

Article: SCIENTISTS COMPUTE DEATH THROES OF WHITE DWARF STAR ...
US Fed News Service, Including US State News;  March 22, 2007 ;     700+ words ... ... will demonstrate how to incinerate a white dwarf star in unprecedented detail at the ... March 22, in Santa Barbara, Calif. White dwarf stars pack one and a half times the ... for years have attempted to blow up a white dwarf star by writing the laws of physics ...