DEVELOPMENT of the MODEL of GALACTIC INTERSTELLAR EMISSION for STANDARD POINT-SOURCE ANALYSIS of FERMI LARGE AREA TELESCOPE DATA

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Acero F, Ackermann M, Ajello M, Albert A, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Casandjian JM, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, Cuoco A, Cutini S, D'Ammando F, De Angelis A, De Palma F, Desiante R, Digel SW, Di Venere L, Drell PS, Favuzzi C, Fegan SJ, Ferrara EC, Focke WB, Franckowiak A, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Grenier IA, Guiriec S, Hadasch D, Harding AK, Hayashi K, Hays E, Hewitt JW, Hill AB, Horan D, Hou X, Jogler T, Johannesson G, Kamae T, Kuss M, Landriu D, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Maldera S, Malyshev D, Manfreda A, Martin P, Mayer M, Mazziotta MN, Mcenery JE, Michelson PF, Mirabal N, Mizuno T, Monzani ME, Morselli A, Nuss E, Ohsugi T, Omodei N, Orienti M, Orlando E, Ormes JF, Paneque D, Pesce-Rollins M, Piron F, Pivato G, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Remy Q, Renault N, Sanchez-Conde M, Schaal M, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Strong AW, Suson DJ, Tajima H, Takahashi H, Thayer JB, Thompson DJ, Tibaldo L, Tinivella M, Torres DF, Tosti G, Troja E, Vianello G, Werner M, Wood KS, Wood M, Zaharijas G, Zimmer S
Zeitschrift: Astrophysical Journal Supplement Series
Verlag: American Astronomical Society
Jahr der Veröffentlichung: 2016
Band: 223
Heftnummer: 2
ISSN: 0067-0049


Abstract


Most of the celestial γ 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°and we observe an enhanced emission toward their base extending in the north and south Galactic directions and located within ∼4°of the Galactic Center.



FAU-Autoren / FAU-Herausgeber

Funk, Stefan Prof. Dr.
Lehrstuhl für Physik
Malyshev, Dmitry
Lehrstuhl für Physik


Autor(en) der externen Einrichtung(en)
AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum
Chinese Academy of Sciences (CAS) / 中国科学院
Clemson University
Deutsches Elektronen-Synchrotron DESY
École Polytechnique - Université Paris-Saclay
George Mason University
Hiroshima University
Italian Space Agency / Agenzia Spaziale Italiana (ASI)
Japan Aerospace eXploration Agency (JAXA)
Leopold-Franzens-Universität Innsbruck / University of Innsbruck
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
National Academy of Sciences
National Aeronautics and Space Administration (NASA)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN)
NYCB Real-Time Computing, Inc.
Purdue University Northwest / Purdue University Calumet
Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC)
Stanford University
Stockholm University / Stockholms universitet
University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro
University of Denver
University of Iceland (UI)
University of Johannesburg
University of Montpellier / Université Montpellier
University of North Florida (UNF)
University of Padua
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
University of Tokyo
University of Udine / Università degli Studi di Udine
U.S. Naval Research Laboratory


Zitierweisen

APA:
Acero, F., Ackermann, M., Ajello, M., Albert, A., Baldini, L., Ballet, J.,... 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). https://dx.doi.org/10.3847/0067-0049/223/2/26

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).

BibTeX: 

Zuletzt aktualisiert 2018-15-11 um 20:50