主要内容:
为他们的中间类型又添证据。427个RHESSI的暴。
精彩摘抄:
文章信息:
- · arXiv e-print (arXiv:1004.3389)
- · References in the article
- · Also-Read Articles (Reads History)
- ·
- · Translate This Page
| Title: |
| Gamma-Ray Burst Classes Found in the Rhessi Data Sample |
| Authors: |
| Řípa, J.; Wigger, C.; Huja, D.; Hudec, R. |
| Affiliation: |
| AA(Charles University, Faculty of Mathematics and Physics, Astronomical Institute, V Holešovičkách 2, 180 00 Prague 8, Czech Republic; ripa@sirrah.troja.mff.cuni.cz), AB(Kantonsschule Wohlen, Allmendstrasse 26, 5610 Wohlen, Switzerland), AC(Charles University, Faculty of Mathematics and Physics, Astronomical Institute, V Holešovičkách 2, 180 00 Prague 8, Czech Republic), AD(Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-251 65 Ondřejov, Czech Republic) |
| Publication: |
| Baltic Astronomy, Vol. 18, p. 305-310 |
| Publication Date: |
| 00/2009 |
| Origin: |
| BALTA |
| Keywords: |
| gamma rays: bursts |
| Bibliographic Code: |
| 2009BaltA..18..305R |
Abstract
A sample of 427 gamma-ray bursts (GRBs), measured by the RHESSI satellite, is studied statistically to determine the number of GRB groups. Previous studies based on the BATSE Catalog and recently on the Swift data claim the existence of an intermediate GRB group, besides the long and short groups. Using only the GRB durations T
90 and χ2 or F-test, we have not found any statistically significant intermediate group. However, the maximum likelihood ratio test, one-dimensional as well as two-dimensional hardness vs. T
90 plane, reveal the reality of an intermediate group. Hence, the existence of this group follows not only from the BATSE and Swift datasets, but also from the RHESSI results.
没有评论:
发表评论