Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-03-21
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
11 pages, 3 figures, 1 table; A&A, in press
Scientific paper
Gamma ray bursts (GRBs) have great advantages for their huge burst energies, luminosities and high redshifts in probing the Universe. A few interesting luminosity correlations of GRBs have been used to test cosmology models. Especially, for a subsample of long GRBs with known redshifts and a plateau phase in the afterglow, a correlation between the end time of the plateau phase (in the GRB rest frame) and the corresponding X-ray luminosity has been found. In this paper, we re-analyze the subsample and found that a significantly tighter correlation exists when we add a third parameter, i.e. the isotropic $\gamma$-ray energy release, into the consideration. Additionally, both long and intermediate duration GRBs are consistent with the same three-parameter correlation equation. It is argued that the new three-parameter correlation is consistent with the hypothesis that the subsample of GRBs with a plateau phase in the afterglow be associated with the birth of rapidly rotating magnetars, and that the plateau be due to the continuous energy-injection from the magnetar. It is suggested that the newly born millisecond magnetars associated with GRBs might provide a good standard candle in the Universe.
Huang Yun-Feng
Xu Minzhong
No associations
LandOfFree
A new three-parameter correlation for gamma-ray bursts with a plateau phase in the afterglow does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new three-parameter correlation for gamma-ray bursts with a plateau phase in the afterglow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new three-parameter correlation for gamma-ray bursts with a plateau phase in the afterglow will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-323011