J/ApJ/819/44 First Fermi-LAT Inner Galaxy point source catalog (Ajello+, 2016)
Fermi-LAT observations of high-energy gamma-ray emission toward the Galactic
Center.
Ajello M., Albert A., Atwood W.B., Barbiellini G., Bastieri D., Bechtol K.,
Bellazzini R., Bissaldi E., Blandford R.D., Bloom E.D., Bonino R.,
Bottacini E., Brandt T.J., Bregeon J., Bruel P., Buehler R., Buson S.,
Caliandro G.A., Cameron R.A., Caputo R., Caragiulo M., Caraveo P.A.,
Cecchi C., Chekhtman A., Chiang J., Chiaro G., Ciprini S., Cohen-Tanugi J.,
Cominsky L.R., Conrad J., Cutini S., D'Ammando F., De Angelis A.,
De Palma F., Desiante R., Di Venere L., Drell P.S., Favuzzi C.,
Ferrara E.C., Fusco P., Gargano F., Gasparrini D., Giglietto N., Giommi P.,
Giordano F., Giroletti M., Glanzman T., Godfrey G., Gomez-Vargas G.A.,
Grenier I.A., Guiriec S., Gustafsson M., Harding A.K., Hewitt J.W.,
Hill A.B., Horan D., Jogler T., Johannesson G., Johnson A.S., Kamae T.,
Karwin C., Knodlseder J., Kuss M., Larsson S., Latronico L., Li J., Li L.,
Longo F., Loparco F., Lovellette M.N., Lubrano P., Magill J., Maldera S.,
Malyshev D., Manfreda A., Mayer M., Mazziotta M.N., Michelson P.F.,
Mitthumsiri W., Mizuno T., Moiseev A.A., Monzani M.E., Morselli A.,
Moskalenko I.V., Murgia S., Nuss E., Ohno M., Ohsugi T., Omodei N.,
Orlando E., Ormes J.F., Paneque D., Pesce-Rollins M., Piron F., Pivato G.,
Porter T.A., Raino S., Rando R., Razzano M., Reimer A., Reimer O., Ritz S.,
Sanchez-Conde M., Parkinson P.M.S., Sgro C., Siskind E.J., Smith D.A.,
Spada F., Spandre G., Spinelli P., Suson D.J., Tajima H., Takahashi H.,
Thayer J.B., Torres D.F., Tosti G., Troja E., Uchiyama Y., Vianello G.,
Winer B.L., Wood K.S., Zaharijas G., Zimmer S.
<Astrophys. J., 819, 44 (2016)>
=2016ApJ...819...44A 2016ApJ...819...44A (SIMBAD/NED BibCode)
ADC_Keywords: Galactic center ; Gamma rays
Keywords: cosmic rays - Galaxy: center - gamma-rays: general - gamma-rays: ISM -
radiation mechanisms: non-thermal
Abstract:
The Fermi Large Area Telescope (LAT) has provided the most detailed
view to date of the emission toward the Galactic center (GC) in
high-energy γ-rays. This paper describes the analysis of data
taken during the first 62 months of the mission in the energy range
1-100GeV from a 15°x15° region about the direction of the GC.
Specialized interstellar emission models (IEMs) are constructed to
enable the separation of the γ-ray emissions produced by cosmic
ray particles interacting with the interstellar gas and radiation
fields in the Milky Way into that from the inner ∼1kpc surrounding
the GC, and that from the rest of the Galaxy. A catalog of point
sources for the 15°x15° region is self-consistently
constructed using these IEMs: the First Fermi-LAT Inner Galaxy Point
Source Catalog (1FIG). The spatial locations, fluxes, and spectral
properties of the 1FIG sources are presented, and compared with
γ-ray point sources over the same region taken from existing
catalogs. After subtracting the interstellar emission and point-source
contributions a residual is found. If templates that peak toward the
GC are used to model the positive residual the agreement with the data
improves, but none of the additional templates tried account for all
of its spatial structure. The spectrum of the positive residual
modeled with these templates has a strong dependence on the choice of
IEM.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 81 48 *Point sources detected with TS>25 for Pulsars
intensity-scaled IEM for the 15°x15°
region about the GC
table7.dat 184 48 1FIG point source spectral parameters
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Note on table3.dat: Two interstellar emission models (IEMs) for each of the
Pulsars and OBstars models - 4 in total - are constructed. The two variants
for each model are termed "intensity-scaled" and "index-scaled."
See Sect. 3.1 of the paper.
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See also:
B/psr : ATNF Pulsar Catalogue (Manchester+, 2005)
J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)
J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)
J/ApJS/208/17 : 2nd Fermi LAT cat. of gamma-ray pulsars (2PC) (Abdo+, 2013)
J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- 1FIG 1FIG name (<1FIG JHHMM.m+DDMM> in SIMBAD)
14- 19 F6.2 deg GLON Galactic longitude (1)
21- 25 F5.2 deg GLAT Galactic latitude (1)
27- 30 F4.2 deg e_pos Localization uncertainty Δθ
32- 35 I4 --- TS Test statistic (1)
37- 41 F5.2 10-9ph/cm2/s F1 IEM Pulsars intensity flux
43- 47 F5.2 10-9ph/cm2/s F2 IEM Pulsars index-scaled flux
49- 53 F5.2 10-9ph/cm2/s F3 IEM OBstars intensity flux
55- 59 F5.2 10-9ph/cm2/s F4 IEM OBstars index-scaled flux
61- 62 A2 --- Type [LP/PL] Type
64- 81 A18 --- 3FGL Fermi catalog association
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Note (1): The localizations and TS are for the Pulsars intensity-scaled IEM.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [1FIG]
6- 17 A12 --- 1FIG 1FIG name (<1FIG JHHMM.m+DDMM> in SIMBAD)
19- 20 A2 --- Type [LP/PL] Type (1)
22 A1 --- --- [(]
23- 26 F4.2 --- alpha1 [0.82/3.8] Pulsars intensity-scaled α
parameter
28- 32 A5 --- --- [±]
34- 37 F4.2 --- e_alpha1 [0.04/1.36] Error on alpha1
38 A1 --- --- [,]
40- 43 F4.2 --- beta1 [0/3.08]? Pulsars intensity-scaled β
parameter
45- 49 A5 --- --- [±]
51- 54 F4.2 --- e_beta1 [0/1.24]? Error on beta1
55 A1 --- --- [,]
57- 60 F4.2 --- Eb1 [0.32/3.12]? Pulsars intensity-scaled Eb
parameter
61 A1 --- --- [)]
63 A1 --- --- [(]
64- 67 F4.2 --- alpha2 [1.63/4.84] Pulsars index-scaled α
parameter
69- 73 A5 --- --- [±]
75- 78 F4.2 --- e_alpha2 [0.04/1.12] Error on alpha2
79 A1 --- --- [,]
81- 84 F4.2 --- beta2 [0/2.61]? Pulsars index-scaled β
parameter
86- 90 A5 --- --- [±]
92- 95 F4.2 --- e_beta2 [0/1.34]? Error on beta2
96 A1 --- --- [,]
98-101 F4.2 --- Eb2 [0.32/3.12]? Pulsars index-scaled Eb
parameter
102 A1 --- --- [)]
104 A1 --- --- [(]
105-108 F4.2 --- alpha3 [0.37/5] OBstars intensity-scaled α
parameter
110-114 A5 --- --- [±]
116-119 F4.2 --- e_alpha3 [0.04/0.69] Error on alpha3
120 A1 --- --- [,]
122-125 F4.2 --- beta3 [0/3.09]? OBstars intensity-scaled β
parameter
127-131 A5 --- --- [±]
133-136 F4.2 --- e_beta3 [0/1.2]? Error on beta3
137 A1 --- --- [,]
139-142 F4.2 --- Eb3 [0.32/3.12]? OBstars intensity-scaled Eb
parameter
143 A1 --- --- [)]
145 A1 --- --- [(]
146-149 F4.2 --- alpha4 [0/5] OBstars index-scaled α parameter
151-155 A5 --- --- [±]
157-160 F4.2 --- e_alpha4 [0/0.75] Error on alpha4
161 A1 --- --- [,]
163-166 F4.2 --- beta4 [0/3.01]? OBstars index-scaled β
parameter
168-172 A5 --- --- [±]
174-177 F4.2 --- e_beta4 [0/1.85]? Error on beta4
178 A1 --- --- [,]
180-183 F4.2 --- Eb4 [0.32/3.12]? OBstars index-scaled Eb
parameter
184 A1 --- --- [)]
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Note (1): Type, defined as follows:
PL = Power Law (dN/dE=N0E-α, with parameters N0 and α)
LP = LogParabola (dN/dE=N0(E/Eb)-α-βlog(E/Eb_)^ with
parameter tuple N0, α, β and Eb)
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History:
From electronic version of the journal
(End) Marianne Brouty [CDS] 25-Jan-2018