Show simple item record

dc.contributor.authorThomas, Brian C., Melott, Adrian L., Fields, Brian D., and Anthony-Twarog, Barbara J.en_US
dc.date.accessioned2014-09-29en_US
dc.date.accessioned2018-11-02T14:38:08Z
dc.date.available2014-09-29en_US
dc.date.available2018-11-02T14:38:08Z
dc.identifier.urihttps://wuir.washburn.edu/handle/10425/195
dc.description.abstractRecently Supernova 2006gy was noted as the most luminous ever recorded, with a total radiated energy of -10(44) Joules. It was proposed that the progenitor may have been a massive evolved star similar to n Carinae, which resides in our own galaxy at a distance of about 2.3 kpc. n Carinae appears ready to detonate. Although it is too distant to pose a serious threat as a normal supenova, and given its rotation axis is unlikely to produce a Gamma-Ray Burst oriented toward the Earth, n Carinae is about 30,000 times nearer than 2006gy, and we re-evaluate it as a potential superluminous supernova. We find that given the large ratio of emission in the optical to the X-ray, atmospheric effects are negligible. ionization of the atmosphere and concomitant ozone depletion are unlikely to be important. Any cosmic ray effects should be spread out over ~10(4)y, and similarly unlikely to produce any serious perturbation to the biosphere. We also discuss a new possible effect of supernovae, endocrine disruption induced by blue light near the peak of the optical spectrum. this is a possibility for nearby supernovae at distances too large to be considered "dangerous" for other reasons. However, due to reddening and extinction by the interstellar medium, n Carinae is unlikely to trigger such effects to any significant degree.en_US
dc.format.medium.pdfen_US
dc.language.isoengen_US
dc.publisheren_US
dc.relationBrian C. Thomas is a Washburn University faculty member.en_US
dc.subjectAtmospyhere, Ozone, Radiation, Supernovaeen_US
dc.titleSuperluminous Supernovae No Threat From Eta Carinaeen_US
washburn.identifier.cdm13en_US
washburn.identifier.oclcen_US
washburn.source.locationen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record