There is a short gamma-ray burst prompt phase at the beginning of each long one

G. Calderone; G. Ghirlanda; G. Ghisellini; M. G. Bernardini; S. Campana; S. Covino; D'Avanzo; V. D'Elia; A. Melandri; R. Salvaterra; B. Sbarufatti; G. Tagliaferri

doi:10.1093/mnras/stu2664

There is a short gamma-ray burst prompt phase at the beginning of each long one

G. Calderone, G. Ghirlanda, G. Ghisellini, M. G. Bernardini, S. Campana, S. Covino, D'Avanzo, V. D'Elia, A. Melandri, R. Salvaterra, B. Sbarufatti, G. Tagliaferri

Astronomy & Astrophysics

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

We compare the prompt intrinsic spectral properties of a sample of short gamma-ray bursts (GRBs) with the first 0.3 s (rest frame) of long GRBs observed by Fermi/GBM (Gamma Burst Monitor). We find that short GRBs and the first part of long GRBs lie on the same E_p-E_iso correlation, that is parallel to the relation for the time-averaged spectra of long GRBs. Moreover, they are indistinguishable in the E_p-L_iso plane. This suggests that the emission mechanism is the same for short and for the beginning of long events, and both short and long GRBs are very similar phenomena, occurring on different time-scales. If the central engine of a long GRB would stop after ~0.3 × (1 + z) s, the resulting event would be spectrally indistinguishable from a short GRB.

Original language	English (US)
Pages (from-to)	403-416
Number of pages	14
Journal	Monthly Notices of the Royal Astronomical Society
Volume	448
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stu2664
State	Published - Mar 21 2015

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/stu2664

Cite this

Calderone, G., Ghirlanda, G., Ghisellini, G., Bernardini, M. G., Campana, S., Covino, S., D'Avanzo, D'Elia, V., Melandri, A., Salvaterra, R., Sbarufatti, B., & Tagliaferri, G. (2015). There is a short gamma-ray burst prompt phase at the beginning of each long one. Monthly Notices of the Royal Astronomical Society, 448(1), 403-416. https://doi.org/10.1093/mnras/stu2664

@article{74f3057937a645fb869793a197abe7f6,

title = "There is a short gamma-ray burst prompt phase at the beginning of each long one",

abstract = "We compare the prompt intrinsic spectral properties of a sample of short gamma-ray bursts (GRBs) with the first 0.3 s (rest frame) of long GRBs observed by Fermi/GBM (Gamma Burst Monitor). We find that short GRBs and the first part of long GRBs lie on the same Ep-Eiso correlation, that is parallel to the relation for the time-averaged spectra of long GRBs. Moreover, they are indistinguishable in the Ep-Liso plane. This suggests that the emission mechanism is the same for short and for the beginning of long events, and both short and long GRBs are very similar phenomena, occurring on different time-scales. If the central engine of a long GRB would stop after ~0.3 × (1 + z) s, the resulting event would be spectrally indistinguishable from a short GRB.",

author = "G. Calderone and G. Ghirlanda and G. Ghisellini and Bernardini, {M. G.} and S. Campana and S. Covino and D'Avanzo and V. D'Elia and A. Melandri and R. Salvaterra and B. Sbarufatti and G. Tagliaferri",

note = "Funding Information: This research was funded by research grants 84-AST-1.3-FAD-31(2-1) and 85-AST-1.2-FAD-17(2) from the Council of Agriculture and NSC87-2811-B-005-0002 (to H.C. Huang) from the National Science Council, Taiwan, Republic of China. Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = mar,

day = "21",

doi = "10.1093/mnras/stu2664",

language = "English (US)",

volume = "448",

pages = "403--416",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

TY - JOUR

T1 - There is a short gamma-ray burst prompt phase at the beginning of each long one

AU - Calderone, G.

AU - Ghirlanda, G.

AU - Ghisellini, G.

AU - Bernardini, M. G.

AU - Campana, S.

AU - Covino, S.

AU - D'Avanzo,

AU - D'Elia, V.

AU - Melandri, A.

AU - Salvaterra, R.

AU - Sbarufatti, B.

AU - Tagliaferri, G.

N1 - Funding Information: This research was funded by research grants 84-AST-1.3-FAD-31(2-1) and 85-AST-1.2-FAD-17(2) from the Council of Agriculture and NSC87-2811-B-005-0002 (to H.C. Huang) from the National Science Council, Taiwan, Republic of China. Publisher Copyright: © 2015 The Authors.

PY - 2015/3/21

Y1 - 2015/3/21

N2 - We compare the prompt intrinsic spectral properties of a sample of short gamma-ray bursts (GRBs) with the first 0.3 s (rest frame) of long GRBs observed by Fermi/GBM (Gamma Burst Monitor). We find that short GRBs and the first part of long GRBs lie on the same Ep-Eiso correlation, that is parallel to the relation for the time-averaged spectra of long GRBs. Moreover, they are indistinguishable in the Ep-Liso plane. This suggests that the emission mechanism is the same for short and for the beginning of long events, and both short and long GRBs are very similar phenomena, occurring on different time-scales. If the central engine of a long GRB would stop after ~0.3 × (1 + z) s, the resulting event would be spectrally indistinguishable from a short GRB.

AB - We compare the prompt intrinsic spectral properties of a sample of short gamma-ray bursts (GRBs) with the first 0.3 s (rest frame) of long GRBs observed by Fermi/GBM (Gamma Burst Monitor). We find that short GRBs and the first part of long GRBs lie on the same Ep-Eiso correlation, that is parallel to the relation for the time-averaged spectra of long GRBs. Moreover, they are indistinguishable in the Ep-Liso plane. This suggests that the emission mechanism is the same for short and for the beginning of long events, and both short and long GRBs are very similar phenomena, occurring on different time-scales. If the central engine of a long GRB would stop after ~0.3 × (1 + z) s, the resulting event would be spectrally indistinguishable from a short GRB.

UR - http://www.scopus.com/inward/record.url?scp=85015659077&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85015659077&partnerID=8YFLogxK

U2 - 10.1093/mnras/stu2664

DO - 10.1093/mnras/stu2664

M3 - Article

AN - SCOPUS:85015659077

SN - 0035-8711

VL - 448

SP - 403

EP - 416

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

There is a short gamma-ray burst prompt phase at the beginning of each long one

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this