GRB 060218: the density mask and its peculiarity compared to the other sources

Details GRB 060218: the density mask and its peculiarity compared to the other sources GRB 060218: the density mask and its peculiarity compared to the other sources

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1053..283d&link_type=abstract

OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE: Proceedings of the 2nd Kolkata Conference on Observational Evidence for

Other

Gamma-Ray Sources, Gamma-Ray Bursts, Galactic Nuclei, Circumnuclear Matter, And Bulges, X-Ray

Scientific paper

The Swift satellite has given continuous data in the range 0.3-150 keV from 0 s to 106 s for GRB060218 associated with SN2006aj. It has an unusually long duration (T90~2100 s). We plan to fit the complete γ- and X-ray light curves of this long duration GRB, including the prompt emission and we give peculiar attention to the afterglow lightcurve in order to better constrain the density mask. We apply our ``fireshell'' model based on the formation of a black hole, giving the relevant references. The initial total energy of the electron-positron plasma Ee+/-tot = 2.32×1050 erg has a particularly low value similarly to the other GRBs associated with SNe. For the first time we observe a baryon loading B = 10-2 which coincides with the upper limit for the dynamical stability of the fireshell. The effective CircumBurst Medium (CBM) density shows a radial dependence ncbm~r-α with 1.0<=α<=1.7 and monotonically decreases from 1 to 10-6 particles/cm3. Such a behavior is interpreted as due to a fragmentation in the fireshell. Such a fragmentation is crucial in explaining both the unusually large T90 and the consequently inferred abnormal low value of the CBM effective density. We present the comparison between the density mask of this source and the ones of a normal GRB 050315 and a fake short, GRB 970228, making some assunptions on the CBM behaviour in the surrounding of the Black hole.

Affiliated with

Also associated with

No associations

Rating

GRB 060218: the density mask and its peculiarity compared to the other sources 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 GRB 060218: the density mask and its peculiarity compared to the other sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GRB 060218: the density mask and its peculiarity compared to the other sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1662703