PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Dust extinctions for an unbiased sample of gamma-ray burst afterglows
Covino, S.1; Melandri, A.1; Salvaterra, R.2; Campana, S.1; Vergani, S. D.1,3; Bernardini, M. G.1; D'Avanzo, P.1; D'Elia, V.4,5; Fugazza, D.1; Ghirlanda, G.1; Ghisellini, G.1; Gomboc, A.6,7; Jin, Z. P.1,8; Kruhler, T.9; Malesani, D.9; Nava, L.10; Sbarufatti, B.1; Tagliaferri, G.1
2013-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume432Issue:2Pages:1231-1244
AbstractIn this paper, we compute rest-frame extinctions for the afterglows of a sample of Swift gamma-ray bursts (GRBs) complete in redshift. The selection criteria of the sample are based on observational high-energy parameters of the prompt emission and therefore our sample should not be biased against dusty sight-lines. It is therefore expected that our inferences hold for the general population of GRBs. Our main result is that the optical/near-infrared extinction of GRB afterglows in our sample does not follow a single distribution. 87 per cent of the events are absorbed by less than 2 mag, and 50 per cent suffer from less than 0.3-0.4 mag extinction. The remaining 13 per cent of the afterglows are highly absorbed. The true percentage of GRB afterglows showing high absorption could be even higher since a fair fraction of the events without reliable redshift measurement are probably part of this class. These events may be due to highly dusty molecular clouds/star-forming regions associated with the GRB progenitor or along the afterglow line of sight, and/or due to massive dusty host galaxies. No clear evolution in the dust extinction properties is evident within the redshift range of our sample, although the largest extinctions are at z similar to 1.5-2, close to the expected peak of the star formation rate. Those events classified as dark are characterized, on average, by a higher extinction than typical events in the sample. A correlation between optical/near-infrared extinction and hydrogen-equivalent column density based on X-ray studies is shown, although the observed N-H appears to be well in excess compared to those observed in the Local Group. Dust extinction does not seem to correlate with GRB energetics or luminosity.
KeywordGamma-ray Burst: General Ism: General
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stt540
WOS KeywordTIME-DEPENDENT PHOTOIONIZATION ; GRB OPTICAL AFTERGLOWS ; X-RAY ; SWIFT-ERA ; HOST GALAXIES ; PANCHROMATIC OBSERVATIONS ; COLUMN DENSITIES ; PROMPT EMISSION ; MOLECULAR CLOUD ; STAR-FORMATION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000319832300028
Citation statistics
Cited Times:71[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10044
Collection宇宙伽马暴、中子星及相关物理研究团组
Affiliation1.INAF Brera Astron Observ, I-23807 Merate, LC, Italy
2.INAF IASF Milano, I-20133 Milan, Italy
3.Univ Paris Diderot, CNRS, Observ Paris, GEPI, F-92190 Meudon, France
4.INAF Rome Astron Observ, I-00040 Rome, Italy
5.ASI Sci Data Ctr, I-00044 Rome, Italy
6.Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia
7.Ctr Excellence Space Si, Ljubljana 1000, Slovenia
8.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
9.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark
10.Univ Paris Diderot, APC, CNRS IN2P3, CEA Irfu,Obs Paris, Sorbonne Paris Cite, France
Recommended Citation
GB/T 7714
Covino, S.,Melandri, A.,Salvaterra, R.,et al. Dust extinctions for an unbiased sample of gamma-ray burst afterglows[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,432(2):1231-1244.
APA Covino, S..,Melandri, A..,Salvaterra, R..,Campana, S..,Vergani, S. D..,...&Tagliaferri, G..(2013).Dust extinctions for an unbiased sample of gamma-ray burst afterglows.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,432(2),1231-1244.
MLA Covino, S.,et al."Dust extinctions for an unbiased sample of gamma-ray burst afterglows".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 432.2(2013):1231-1244.
Files in This Item:
File Name/Size DocType Version Access License
Dust extinctions for(554KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Covino, S.]'s Articles
[Melandri, A.]'s Articles
[Salvaterra, R.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Covino, S.]'s Articles
[Melandri, A.]'s Articles
[Salvaterra, R.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Covino, S.]'s Articles
[Melandri, A.]'s Articles
[Salvaterra, R.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Dust extinctions for an unbiased sample of gamma-ray burst afterglows.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.