Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands

Details Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands

2011-09-15

arxiv.org/abs/1109.3376v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

11 pages, 5 figures. Accepted by MNRAS

Scientific paper

A simple mathematical model of GRB pulses in time, suggested in Norris et al. (2005), is extended across energy. For a class of isolated pulses, two of those parameters appear effectively independent of energy. Specifically, statistical fits indicate that pulse amplitude $A$ and pulse width $\tau$ are energy dependent, while pulse start time and pulse shape are effectively energy independent. These results bolster the Pulse Start and Pulse Scale conjectures of Nemiroff (2000) and add a new Pulse Shape conjecture which states that a class of pulses all have the same shape. The simple resulting pulse counts model is $P(t,E) = A(E) \ {\rm exp} (-t/\tau(E) - \tau(E)/t)$, where $t$ is the time since the start of the pulse. This pulse model is found to be an acceptable statistical fit to many of the fluent separable BATSE pulses listed in Norris et al. (2005). Even without theoretical interpretation, this cross-energy extension may be immediately useful for fitting prompt emission from GRB pulses across energy channels with a minimal number of free parameters.

Affiliated with

Also associated with

No associations

Rating

Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands 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 Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extension of an Exponential Light Curve GRB Pulse Model Across Energy Bands will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-673545