期刊
NATURE
卷 521, 期 7552, 页码 328-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nature14440
关键词
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资金
- W. M. Keck Foundation
- National Science Foundation
- EU/FP7 via an ERC grant
- Quantum Universe I-Core programme
- ISF
- Minerva and Weizmann-UK grants
- Kimmel Award
- Carnegie-Princeton fellowship
- Swedish Research Council
- Knut and Alice Wallenberg Foundation
- Office of Science of the US Department of Energy [DE-AC02-05CH11231]
- US Department of Energy as part of the Laboratory Directed Research and Development programme
- National Aeronautics and Space Administration
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1313484] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1009987] Funding Source: National Science Foundation
Type Ia supernovae(1) are destructive explosions of carbon-oxygen white dwarfs(2,3). Although they are used empirically to measure cosmological distances(4-6), the nature of their progenitors remains mysterious(3). One of the leading progenitor models, called the single degenerate channel, hypothesizes that a white dwarf accretes matter from a companion star and the resulting increase in its central pressure and temperature ignites thermonuclear explosion(3,7,8). Here we report observations with the Swift Space Telescope of strong but declining ultraviolet emission from a type Ia supernova within four days of its explosion. This emission is consistent with theoretical expectations of collision between material ejected by the supernova and a companion star(9), and therefore provides evidence that some type Ia supernovae arise from the single degenerate channel.
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