supernovae

Object intermediate between normal supernovae and gamma-ray bursts

harminka — Thu, 24 Jul 2008 14:30:04 -0500

A European-led team of astronomers are providing hints that a recent supernova may not be as normal as initially thought. Instead, the star that exploded is now understood to have collapsed into a black hole, producing a weak jet, typical of much more violent events, the so-called gamma-ray bursts.

NASA-funded instrument nails nova

harminka — Tue, 29 Jan 2008 12:05:45 -0600

First results from a new NASA-funded scientific instrument at the W. M. Keck Observatory in Hawaii are helping scientists overturn long-standing assumptions about powerful explosions called novae and have produced the first unified model for a nearby nova called RS Ophiuchi.

NASA's Swift Sees Double Supernova in Galaxy

harminka — Wed, 27 Jun 2007 12:23:22 -0500

In just the past six weeks, two supernovae have flared up in an obscure galaxy in the constellation Hercules. Never before have astronomers observed two of these powerful stellar explosions occurring in the same galaxy so close together in time.

Supernovae - Cosmic Lighthouses

harminka — Sat, 10 Feb 2007 01:37:29 -0600

Universe contains more calcium than expected

harminka — Tue, 06 Feb 2007 11:48:59 -0600

Dark energy may be vacuum

harminka — Tue, 16 Jan 2007 23:52:27 -0600