Abstracts - faqs.org

Abstracts

Zoology and wildlife conservation

Search abstracts:
Abstracts » Zoology and wildlife conservation

An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova

Article Abstract:

Gamma-ray bursts (GRBs) are short, intense flashes of soft gamma-rays coming from the distant Universe, while long duration GRBs are believed to originate from the death of massive stars mainly on the basis of a harmful of solid associations between GRBs and supernovae. The deep optical observations of GRB 060614 however shows no emerging supernova with absolute visual magnitude brighter than [M.sub.V]=-13.7, demonstrating that some long-lasting GRBs can either be associated with a very faint supernova or produced by different phenomena.

Author: Mirabel, I.F., Hurley, K., Tagliaferri, G., Chincarini, G., Campana, S., Mangano, V., Covino, S., Antonelli, L.A., Malesani, D., Valle, Della M., Panagia, N., Testa, V., Fugazza, D., D'Avanzo, P.., Pellizza, L.J., Piranomonte, S., Stella, L.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
United Kingdom, Supergiant stars

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

The association of GRB 060218 with a supernova and the evolution of the shock wave

Article Abstract:

The gamma-ray burst (GRB) GRB 060218 and its association with supernova SN 2006aj are observed, whereby in addition to the classical non-thermal emission, GRB 060218 reveals a thermal component in its X-ray spectrum, which cools and shifts into the optical/ultraviolet band with time. These features are concluded to be due to the break-out of a shock wave caused by the directly observed explosion of the supernova, indicating that the progenitor of GRB 060218 was most probably a Wolf-Rayet star.

Author: Gehrels, N., Sakamoto, T., Brown, P., Osborne, J.P., Barthelmy, S.D., Cummings, J.R., Cominsky, L.R., Cusumano, G., Roming, P.W.A., Tagliaferri, G., Chincarini, G., Nousek, J.A., Romano, P., O'Brien, P.T., Burrows, D.N., Page, M., Angelini, L., Giommi, P., Moretti, A., Kennea, J.A., Meszaros, P., Campana, S., Mason, K.O., Boyd, P.T., Mangano, V., Marshall, F.E., Wells, A.A., White, N.E., Zhang, B., Palmer, D.M., Blustin, A.J., Valle, M. Della, Malesani, D., Waxman, E., Dai, Z.G., Immler, S., Page, K.L., Godet, O., Krimm, H.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
Observations, Gamma rays, Shock waves

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

An origin for short gamma-ray bursts unassociated with current star formation

Article Abstract:

The X-ray localization of a short burst (GRB 050724) with unusual gamma-ray and X-ray properties is reported.The results show that an alternative source of bursts the colescence of binary systems of neutron stars or a neutron star-black hole pair are the progenitors of short bursts.

Author: Gehrels, N., Sakamoto, T., Patel, S., Kobayashi, S., Kouveliotou, C., Kaneko, Y., Sarazin, C.L., Barthelmy, S.D., Cummings, J.R., Goad, M., Tagliaferri, G., Chincarini, G., Nousek, J.A., Romano, P., O'Brien, P.T., Burrows, D.N., Giommi, P., Moretti, A., Kennea, J.A., Meszaros, P., Campana, S., Wijers, R.A.M.J., Grupe, D., D'Avanzo, P., Vaughan, S., Melandri, A., Covino, S., Zhang, B., Antonelli, L.A., King, A., Davies, M.B.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
United States, Black holes (Astronomy), Neutron stars, Properties

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Subjects list: Research, Supernovae, Supernovas, Astronomical research
Similar abstracts:
  • Abstracts: The unusual afterglow of the gamma-ray burst of 26 March 1998 as evidence for a supernova connection. An unusually brilliant transient in the galaxy M85
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.
Some parts © 2013 Advameg, Inc.