DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA

	DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA
	Acero, F.1; Ackermann, M.2; Ajello, M.3; Albert, A.4,5; Baldini, L.4,5,6,7; Ballet, J.1; Barbiellini, G.8,9; Bastieri, D.10,11; Bellazzini, R.7; Bissaldi, E.12
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2016-04-01
卷号	223 期号:2
关键词	gamma rays: diffuse background gamma rays: general gamma rays: ISM
ISSN号	0067-0049
通讯作者	Casandjian, JM ; Grenier, IA (reprint author), Univ Paris Diderot, CEA Saclay, Serv Astrophys, Lab AIM,CEA,IRFU,CNRS, F-91191 Gif Sur Yvette, France.
产权排序	第三十九完成单位
英文摘要	Most of the celestial. rays detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope originate from the interstellar medium when energetic cosmic rays interact with interstellar nucleons and photons. Conventional point-source and extended-source studies rely on the modeling of this diffuse emission for accurate characterization. Here, we describe the development of the Galactic Interstellar Emission Model (GIEM), which is the standard adopted by the LAT Collaboration and is publicly available. This model is based on a linear combination of maps for interstellar gas column density in Galactocentric annuli and for the inverse-Compton emission produced in the Galaxy. In the GIEM, we also include large-scale structures like Loop. I and the Fermi bubbles. The measured gas emissivity spectra confirm that the cosmic-ray proton density decreases with Galactocentric distance beyond 5 kpc from the Galactic Center. The measurements also suggest a softening of the proton spectrum with Galactocentric distance. We observe that the Fermi bubbles have boundaries with a shape similar to a catenary at latitudes below 20 degrees and we observe an enhanced emission toward their base extending in the north and south Galactic directions and located within similar to 4 degrees of the Galactic Center.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	GAMMA-RAY EMISSION ; COSMIC-RAY ; MOLECULAR CLOUDS ; MILKY-WAY ; RADIAL-DISTRIBUTION ; EGRET OBSERVATIONS ; HELIUM SPECTRA ; COLUMN DENSITY ; X-RAY ; PARTICLE-PRODUCTION
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.3847/0067-0049/223/2/26/meta#
语种	英语
WOS记录号	WOS:000375304600008
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9587]
专题	云南天文台_高能天体物理研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Univ Paris Diderot, CEA Saclay, Serv Astrophys, Lab AIM,CEA,IRFU,CNRS, F-91191 Gif Sur Yvette, France 2.Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany 3.Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 USA 4.Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA 5.Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA 6.Univ Pisa, I-56127 Pisa, Italy 7.Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy 8.Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy 9.Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy 10.Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
推荐引用方式 GB/T 7714	Acero, F.,Ackermann, M.,Ajello, M.,et al. DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2016,223(2).
APA	Acero, F..,Ackermann, M..,Ajello, M..,Albert, A..,Baldini, L..,...&Zimmer, S..(2016).DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,223(2).
MLA	Acero, F.,et al."DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 223.2(2016).