2016ApJS..223...26A

Query : 2016ApJS..223...26A

2016ApJS..223...26A - Astrophys. J., Suppl. Ser., 223, 26-26 (2016/April-0)

Development of the model of galactic interstellar emission for standard point-source analysis of Fermi large area telescope data.

ACERO F., ACKERMANN M., AJELLO M., ALBERT A., BALDINI L., BALLET J., BARBIELLINI G., BASTIERI D., BELLAZZINI R., BISSALDI E., BLOOM E.D., BONINO R., BOTTACINI E., BRANDT T.J., BREGEON J., BRUEL P., BUEHLER R., BUSON S., CALIANDRO G.A., CAMERON R.A., CARAGIULO M., CARAVEO P.A., CASANDJIAN J.M., 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 S.W., DI VENERE L., DRELL P.S., FAVUZZI C., FEGAN S.J., FERRARA E.C., FOCKE W.B., FRANCKOWIAK A., FUNK S., FUSCO P., GARGANO F., GASPARRINI D., GIGLIETTO N., GIORDANO F., GIROLETTI M., GLANZMAN T., GODFREY G., GRENIER I.A., GUIRIEC S., HADASCH D., HARDING A.K., HAYASHI K., HAYS E., HEWITT J.W., HILL A.B., 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 M.N., LUBRANO P., MALDERA S., MALYSHEV D., MANFREDA A., MARTIN P., MAYER M., MAZZIOTTA M.N., McENERY J.E., MICHELSON P.F., MIRABAL N., MIZUNO T., MONZANI M.E., MORSELLI A., NUSS E., OHSUGI T., OMODEI N., ORIENTI M., ORLANDO E., ORMES J.F., 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 E.J., SPADA F., SPANDRE G., SPINELLI P., STRONG A.W., SUSON D.J., TAJIMA H., TAKAHASHI H., THAYER J.B., THOMPSON D.J., TIBALDO L., TINIVELLA M., TORRES D.F., TOSTI G., TROJA E., VIANELLO G., WERNER M., WOOD K.S., WOOD M., ZAHARIJAS G. and ZIMMER S.

Abstract (from CDS):

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.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): gamma rays: diffuse background - gamma rays: general - gamma rays: ISM

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
4 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 SNR G180.0-01.7 SNR 05 39 00.000 +27 50 00.00           ~ 294 2
7 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
8 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
9 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
10 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 302 1
11 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
12 NAME Car Arm PoG 10 00 -60.0           ~ 471 1
13 NAME North Polar Spur ISM 12 00 +00.0           ~ 405 1
14 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
15 NAME Loop I SR? 15 01 -38.7           ~ 414 2
16 3A 1510-590 Psr 15 13 17.000 -59 04 54.00           ~ 434 3
17 PSR J1615-5137 Psr 16 15 12.62 -51 34 53.3           ~ 67 0
18 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 552 3
19 IGR J16320-4751 HXB 16 32 01.76 -47 52 29.0           BN0.5Ia 188 0
20 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
21 NAME Fermi Bubbles bub 17 45 -29.0           ~ 525 0
22 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
23 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
24 W 30 SNR 18 05 31.2011719 -21 25 48.001099           ~ 188 1
25 PSR B1823-13 Psr 18 26 13.06 -13 34 48.1           ~ 460 1
26 NAME Aql Rift DNe 18 32 -01.0           ~ 355 1
27 PSR J1838-0655 Psr 18 38 03.13 -06 55 33.4           ~ 114 1
28 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
29 SNR G049.1-00.1 SNR 19 23 19.300 +14 09 21.00           ~ 309 0
30 * gam Cyg V* 20 22 13.7018357 +40 15 24.044963 3.44 2.90 2.23 1.74 1.40 F8Ib 607 0
31 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
32 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0
33 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 964 0
34 NAME Galactic Ridge ? ~ ~           ~ 543 1
35 NAME Local Arm reg ~ ~           ~ 649 0

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