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- Q1064755 subject Q7144261.
- Q1064755 abstract "SN 2002bj was the explosion of a star in the galaxy NGC 1821, located in the constellationLepus. The explosion was discovered by Jack Newton in scans of images produced by Tim Puckett. (It was independently discovered by the Lick/Tenagra Observatory as part of their combined supernova search program.) Initially it had an apparent magnitude of about 14.7 and was categorized as a Type IIn supernova.However, in 2008 Dovi Poznanski discovered that the spectrum more closely resembled a Type Ia supernova. Further, the energy output was much lower than a typical supernova and the luminosity dropped at a dramaticpace.A team consisting of Poznanski, Joshua Bloom, Alex Filippenko and others concluded that it was a new category of exploding star. This system is believed to consist of a binary pair of white dwarf stars, with helium being transferred from one dwarf to the other. The accreted helium exploded in a thermonuclear reaction on the surface of the more massive white dwarf, resulting in the observed outburst. In this sense, it was akin to a nova explosion, although the magnitude of the explosion was a thousand times greater. In 2007, Lars Bildsten et al. had predicted this category of explosion would occur in AM Canum Venaticorum-typebinary systems.NGC 1821 is an irregular galaxy categorized as type IB(s)m. It is apparent magnitude 14.5 and has a redshift of 0.012029. This galaxy is located about 48 megaparsecs from the Earth.".
- Q1064755 wikiPageWikiLink Q10446.
- Q1064755 wikiPageWikiLink Q1049029.
- Q1064755 wikiPageWikiLink Q1069015.
- Q1064755 wikiPageWikiLink Q124313.
- Q1064755 wikiPageWikiLink Q190397.
- Q1064755 wikiPageWikiLink Q2.
- Q1064755 wikiPageWikiLink Q2758100.
- Q1064755 wikiPageWikiLink Q318.
- Q1064755 wikiPageWikiLink Q582000.
- Q1064755 wikiPageWikiLink Q5871.
- Q1064755 wikiPageWikiLink Q6111089.
- Q1064755 wikiPageWikiLink Q6458.
- Q1064755 wikiPageWikiLink Q6491427.
- Q1064755 wikiPageWikiLink Q7144261.
- Q1064755 wikiPageWikiLink Q76250.
- Q1064755 wikiPageWikiLink Q8928.
- Q1064755 comment "SN 2002bj was the explosion of a star in the galaxy NGC 1821, located in the constellationLepus. The explosion was discovered by Jack Newton in scans of images produced by Tim Puckett.".
- Q1064755 label "SN 2002bj".