http://www.universetoday.com/2009/06/09/the-strange-case-of-supernova-sn2008ha/ Space and astronomy news Mon, 22 Mar 2010 03:02:27 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.universetoday.com/2009/06/09/the-strange-case-of-supernova-sn2008ha/comment-page-1/#comment-67338 Jon Hanford Fri, 12 Jun 2009 00:36:29 +0000 http://www.universetoday.com/?p=32219#comment-67338 As if this type of peculiar supernova weren't enough, researchers just posted an eprint entitled "A new type of stellar explosion" discussing an underluminous Type Ib supernova in the galaxy NGC 1032 back in 2005. The paper can be found here: http://arxiv.org/abs/0906.2003 . Some similarities between it (SN 2005E) and SN 2008ha are mentioned in the paper. As if this type of peculiar supernova weren't enough, researchers just posted an eprint entitled "A new type of stellar explosion" discussing an underluminous Type Ib supernova in the galaxy NGC 1032 back in 2005. The paper can be found here: http://arxiv.org/abs/0906.2003 . Some similarities between it (SN 2005E) and SN 2008ha are mentioned in the paper.

]]> http://www.universetoday.com/2009/06/09/the-strange-case-of-supernova-sn2008ha/comment-page-1/#comment-67336 Jon Hanford Thu, 11 Jun 2009 21:57:11 +0000 http://www.universetoday.com/?p=32219#comment-67336 A second paper by an independent team of researchers is available here: http://arxiv.org/abs/0902.2794v2 . @jimmNJ, I think that Type Ia supernovae were used to infer the existence of Dark Energy, so these underluminous Type II supernovae should not alter the evidence for DE. A second paper by an independent team of researchers is available here: http://arxiv.org/abs/0902.2794v2 . @jimmNJ, I think that Type Ia supernovae were used to infer the existence of Dark Energy, so these underluminous Type II supernovae should not alter the evidence for DE.

]]> http://www.universetoday.com/2009/06/09/the-strange-case-of-supernova-sn2008ha/comment-page-1/#comment-67250 jimmNJ Wed, 10 Jun 2009 19:14:41 +0000 http://www.universetoday.com/?p=32219#comment-67250 Could this affect the calculation of Dark Energy using supernovae luminosities? Could this affect the calculation of Dark Energy using supernovae luminosities?

]]> http://www.universetoday.com/2009/06/09/the-strange-case-of-supernova-sn2008ha/comment-page-1/#comment-67176 Jon Hanford Tue, 09 Jun 2009 18:35:42 +0000 http://www.universetoday.com/?p=32219#comment-67176 I was at first curious as to how the researchers accounted for internal galactic absorption in this particular supernova. Upon reading a copy of the preprint: http://arxiv.org/abs/0901.2074v2 . I see they found very little intrinsic absorption in this galaxy. The paper also brings up implications for nearby long GRBs and has several other peculiar SNe highlighted. Unusually dim luminosity coupled with missing hydrogen lines rightly needs to be adequately explained. I was at first curious as to how the researchers accounted for internal galactic absorption in this particular supernova. Upon reading a copy of the preprint: http://arxiv.org/abs/0901.2074v2 . I see they found very little intrinsic absorption in this galaxy. The paper also brings up implications for nearby long GRBs and has several other peculiar SNe highlighted. Unusually dim luminosity coupled with missing hydrogen lines rightly needs to be adequately explained.

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