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Article: Particle propagation in the galactic center and spatial distribution of non-thermal x-rays

TitleParticle propagation in the galactic center and spatial distribution of non-thermal x-rays
Authors
Dogiel, VAChernyshov, DYuasa, TCheng, KSBamba, AInoue, HKo, CMKokubun, MMaeda, YMitsuda, KNakazawa, KYamasaki, NY
KeywordsGalaxy: center
ISM: cosmic rays
X-rays: diffuse background
Issue Date2009
PublisherNihon Tenmon Gakkai. The Journal's web site is located at http://www.asj.or.jp/pasj/
Citation
Publications Of The Astronomical Society Of Japan, 2009, v. 61 n. 5, p. 1093-1098 How to Cite?
AbstractWe showed that if the non-thermal emission from the galactic center in the range 14-40 keV is due to inverse bremsstrahlung emission of subrelativistic protons, their interactions with hot and cold fractions of the interstellar medium are equally important. Our estimation shows that about 30% of the total non-thermal flux from the GC in the range 14-40 keV is generated in regions of cold gas while the rest is produced by proton interaction with hot plasma. From the spatial distribution of 6.7 keV iron line we concluded the spatial distribution of hot plasma is strongly non-uniform that should be taken into account in analysis of proton propagation in the GC. From the Suzaku data we got independent estimates for the diffusion coefficient of subrelativistic protons in the GC, which was in the range 10 26-10 27cm 2s -1. © 2009. Astronomical Society of Japan.
Persistent Identifierhttp://hdl.handle.net/10722/80700
ISSN
0004-6264
2023 Impact Factor: 2.2
2023 SCImago Journal Rankings: 0.860
ISI Accession Number ID
WOS:000271364100016
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorDogiel, VAen_HK
dc.contributor.authorChernyshov, Den_HK
dc.contributor.authorYuasa, Ten_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorBamba, Aen_HK
dc.contributor.authorInoue, Hen_HK
dc.contributor.authorKo, CMen_HK
dc.contributor.authorKokubun, Men_HK
dc.contributor.authorMaeda, Yen_HK
dc.contributor.authorMitsuda, Ken_HK
dc.contributor.authorNakazawa, Ken_HK
dc.contributor.authorYamasaki, NYen_HK
dc.date.accessioned2010-09-06T08:09:20Z-
dc.date.available2010-09-06T08:09:20Z-
dc.date.issued2009en_HK
dc.identifier.citationPublications Of The Astronomical Society Of Japan, 2009, v. 61 n. 5, p. 1093-1098en_HK
dc.identifier.issn0004-6264en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80700-
dc.description.abstractWe showed that if the non-thermal emission from the galactic center in the range 14-40 keV is due to inverse bremsstrahlung emission of subrelativistic protons, their interactions with hot and cold fractions of the interstellar medium are equally important. Our estimation shows that about 30% of the total non-thermal flux from the GC in the range 14-40 keV is generated in regions of cold gas while the rest is produced by proton interaction with hot plasma. From the spatial distribution of 6.7 keV iron line we concluded the spatial distribution of hot plasma is strongly non-uniform that should be taken into account in analysis of proton propagation in the GC. From the Suzaku data we got independent estimates for the diffusion coefficient of subrelativistic protons in the GC, which was in the range 10 26-10 27cm 2s -1. © 2009. Astronomical Society of Japan.en_HK
dc.languageengen_HK
dc.publisherNihon Tenmon Gakkai. The Journal's web site is located at http://www.asj.or.jp/pasj/en_HK
dc.relation.ispartofPublications of the Astronomical Society of Japanen_HK
dc.subjectGalaxy: centeren_HK
dc.subjectISM: cosmic raysen_HK
dc.subjectX-rays: diffuse backgrounden_HK
dc.titleParticle propagation in the galactic center and spatial distribution of non-thermal x-raysen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-6264&volume=61&issue=5&spage=1093&epage=1098&date=2009&atitle=Particle+propagation+in+the+galactic+center+and+spatial+distribution+of+non-thermal+X-rays-
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-72149117956en_HK
dc.identifier.hkuros168776en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-72149117956&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume61en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1093en_HK
dc.identifier.epage1098en_HK
dc.identifier.isiWOS:000271364100016-
dc.publisher.placeJapanen_HK
dc.identifier.scopusauthoridDogiel, VA=6603566238en_HK
dc.identifier.scopusauthoridChernyshov, D=14059433800en_HK
dc.identifier.scopusauthoridYuasa, T=7203046502en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridBamba, A=6701557970en_HK
dc.identifier.scopusauthoridInoue, H=53873680500en_HK
dc.identifier.scopusauthoridKo, CM=7202596730en_HK
dc.identifier.scopusauthoridKokubun, M=7006798464en_HK
dc.identifier.scopusauthoridMaeda, Y=7402845669en_HK
dc.identifier.scopusauthoridMitsuda, K=7005132297en_HK
dc.identifier.scopusauthoridNakazawa, K=7202920765en_HK
dc.identifier.scopusauthoridYamasaki, NY=7102834448en_HK
dc.identifier.issnl0004-6264-

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