Are short GRBs really hard?

T. Sakamoto; L. Barbier; S. Barthelmy; J. Cummings; E. Fenimore; N. Gehrels; D. Hullinger; H. Krimm; C. Markwardt; D. Palmer; A. Parsons; G. Sato; J. Tueller; R. Aptekar; T. Cline; S. Golenetskii; E. Mazets; V. Pal'Shin; G. Ricker; D. Lamb; J. L. Atteia; N. Kawai

doi:10.1063/1.2207855

Are short GRBs really hard?

T. Sakamoto^*, L. Barbier, S. Barthelmy, J. Cummings, E. Fenimore, N. Gehrels, D. Hullinger, H. Krimm, C. Markwardt, D. Palmer, A. Parsons, G. Sato, J. Tueller, R. Aptekar, T. Cline, S. Golenetskii, E. Mazets, V. Pal'Shin, G. Ricker, D. LambJ. L. Atteia, N. Kawai

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

Thanks to the rapid position notice and response by HETE-2 and Swift, the X-ray afterglow emissions have been found for four recent short gamma-ray bursts (GRBs; GRB 050509b, GRB 050709, GRB 050724, and GRB 050813). The positions of three out of four short GRBs are coincident with galaxies with no current or recent star formation. This discovery tightens the case for a different origin for short and long GRBs. On the other hand, from the prompt emission point of view, a short GRB shows a harder spectrum comparing to that of the long duration GRBs according to the BATSE observations. We investigate the prompt emission properties of four short GRBs observed by Swift/BAT. We found that the hardness of all four BAT short GRBs is in between the BATSE range for short and long GRBs. We will discuss the spectral properties of short GRBs including the short GRB sample of Konus-Wind and HETE-2 to understand the hard nature of the BATSE short GRBs.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	43-47
Number of pages	5
Volume	836
DOIs	https://doi.org/10.1063/1.2207855
Publication status	Published - 2006 May 19
Event	GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference - Washington, D.C. Duration: 2005 Nov 29 → 2005 Dec 2

Other

Other	GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference
City	Washington, D.C.
Period	05/11/29 → 05/12/2

Keywords

Prompt gamma-ray emission
Short GRBs

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2207855

Cite this

Sakamoto, T., Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., Gehrels, N., Hullinger, D., Krimm, H., Markwardt, C., Palmer, D., Parsons, A., Sato, G., Tueller, J., Aptekar, R., Cline, T., Golenetskii, S., Mazets, E., Pal'Shin, V., Ricker, G., ... Kawai, N. (2006). Are short GRBs really hard? In AIP Conference Proceedings (Vol. 836, pp. 43-47) https://doi.org/10.1063/1.2207855

Sakamoto, T, Barbier, L, Barthelmy, S, Cummings, J, Fenimore, E, Gehrels, N, Hullinger, D, Krimm, H, Markwardt, C, Palmer, D, Parsons, A, Sato, G, Tueller, J, Aptekar, R, Cline, T, Golenetskii, S, Mazets, E, Pal'Shin, V, Ricker, G, Lamb, D, Atteia, JL & Kawai, N 2006, Are short GRBs really hard? in AIP Conference Proceedings. vol. 836, pp. 43-47, GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference, Washington, D.C., 05/11/29. https://doi.org/10.1063/1.2207855

@inproceedings{7cde911ed45c4e9ab029f8a9b85afa25,

title = "Are short GRBs really hard?",

abstract = "Thanks to the rapid position notice and response by HETE-2 and Swift, the X-ray afterglow emissions have been found for four recent short gamma-ray bursts (GRBs; GRB 050509b, GRB 050709, GRB 050724, and GRB 050813). The positions of three out of four short GRBs are coincident with galaxies with no current or recent star formation. This discovery tightens the case for a different origin for short and long GRBs. On the other hand, from the prompt emission point of view, a short GRB shows a harder spectrum comparing to that of the long duration GRBs according to the BATSE observations. We investigate the prompt emission properties of four short GRBs observed by Swift/BAT. We found that the hardness of all four BAT short GRBs is in between the BATSE range for short and long GRBs. We will discuss the spectral properties of short GRBs including the short GRB sample of Konus-Wind and HETE-2 to understand the hard nature of the BATSE short GRBs.",

keywords = "Prompt gamma-ray emission, Short GRBs",

author = "T. Sakamoto and L. Barbier and S. Barthelmy and J. Cummings and E. Fenimore and N. Gehrels and D. Hullinger and H. Krimm and C. Markwardt and D. Palmer and A. Parsons and G. Sato and J. Tueller and R. Aptekar and T. Cline and S. Golenetskii and E. Mazets and V. Pal'Shin and G. Ricker and D. Lamb and Atteia, {J. L.} and N. Kawai",

year = "2006",

month = may,

day = "19",

doi = "10.1063/1.2207855",

language = "English",

isbn = "0735403260",

volume = "836",

pages = "43--47",

booktitle = "AIP Conference Proceedings",

note = "GAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference ; Conference date: 29-11-2005 Through 02-12-2005",