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Article: Exploring the dark accelerator HESS J1745-303 with the Fermi large area telescope

TitleExploring the dark accelerator HESS J1745-303 with the Fermi large area telescope
Authors
Keywordsgamma rays: ISM
ISM: individual objects (HESS J1745-303 G359.1-0.5 3EG J1744-3011)
Issue Date2011
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2011, v. 735 n. 2 How to Cite?
AbstractWe present a detailed analysis of the γ-ray emission from HESS J1745-303 with the data obtained by the Fermi Gamma-ray Space Telescope in its first 29 month observation. The source can clearly be detected at the levels of 18σ and 6σ in 1-20GeV and 10-20GeV, respectively. We do not find any evidence of the variability seen in the results obtained by the Compton Gamma-ray Observatory. Most of the emission in 10-20GeV is found to coincide with region C of HESS J1745-303. A simple power law is sufficient to describe the GeV spectrum with a photon index of Γ 2.6. The power-law spectrum inferred in the GeV regime can be connected to that of a particular spatial component of HESS J1745-303 in 1-10 TeV without any spectral break. These properties impose independent constraints for understanding the nature of this "dark particle accelerator." © 2011. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/139639
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
Funding AgencyGrant Number
Chungnam National University
Hong Kong GovernmentHKU 7011/10P
National Science Council of the Republic of China (Taiwan)NSC99-2112-M-007-004-MY3
Kenda Foundation
Funding Information:

C.Y.H. is supported by a research fund of Chungnam National University in 2010. K. S. C. is supported by a GRF grant of Hong Kong Government under HKU 7011/10P. And, A. K. H. K. is supported partly by the National Science Council of the Republic of China (Taiwan) through grant NSC99-2112-M-007-004-MY3 and a Kenda Foundation Golden Jade Fellowship.

References

 

DC FieldValueLanguage
dc.contributor.authorHui, CYen_HK
dc.contributor.authorWu, EMHen_HK
dc.contributor.authorWu, JHKen_HK
dc.contributor.authorHuang, RHHen_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorTam, PHTen_HK
dc.contributor.authorKong, AKHen_HK
dc.date.accessioned2011-09-23T05:52:50Z-
dc.date.available2011-09-23T05:52:50Z-
dc.date.issued2011en_HK
dc.identifier.citationAstrophysical Journal Letters, 2011, v. 735 n. 2en_HK
dc.identifier.issn2041-8205en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139639-
dc.description.abstractWe present a detailed analysis of the γ-ray emission from HESS J1745-303 with the data obtained by the Fermi Gamma-ray Space Telescope in its first 29 month observation. The source can clearly be detected at the levels of 18σ and 6σ in 1-20GeV and 10-20GeV, respectively. We do not find any evidence of the variability seen in the results obtained by the Compton Gamma-ray Observatory. Most of the emission in 10-20GeV is found to coincide with region C of HESS J1745-303. A simple power law is sufficient to describe the GeV spectrum with a photon index of Γ 2.6. The power-law spectrum inferred in the GeV regime can be connected to that of a particular spatial component of HESS J1745-303 in 1-10 TeV without any spectral break. These properties impose independent constraints for understanding the nature of this "dark particle accelerator." © 2011. The American Astronomical Society. All rights reserved.en_HK
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_HK
dc.relation.ispartofAstrophysical Journal Lettersen_HK
dc.rightsThe Astrophysical Journal. Copyright © Institute of Physics Publishing, Inc.-
dc.subjectgamma rays: ISMen_HK
dc.subjectISM: individual objects (HESS J1745-303 G359.1-0.5 3EG J1744-3011)en_HK
dc.titleExploring the dark accelerator HESS J1745-303 with the Fermi large area telescopeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=735&issue=2, article no. 115&spage=&epage=&date=2011&atitle=Exploring+the+dark+accelerator+HESS+J1745-303+with+the+Fermi+large+area+telescope-
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0004-637X/735/2/115en_HK
dc.identifier.scopuseid_2-s2.0-79959964336en_HK
dc.identifier.hkuros195555en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79959964336&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume735en_HK
dc.identifier.issue2en_HK
dc.identifier.isiWOS:000292089700048-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHui, CY=12781234500en_HK
dc.identifier.scopusauthoridWu, EMH=44561555200en_HK
dc.identifier.scopusauthoridWu, JHK=44561713000en_HK
dc.identifier.scopusauthoridHuang, RHH=36696348700en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridTam, PHT=35243989500en_HK
dc.identifier.scopusauthoridKong, AKH=35185316600en_HK

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