J/ApJS/209/34 The first Fermi-LAT >10GeV catalog (1FHL) (Ackermann+, 2013)
The first Fermi-LAT catalog of sources above 10 GeV.
Ackermann M., Ajello M., Allafort A., Atwood W.B., Baldini L., Ballet J.,
Barbiellini G., Bastieri D., Bechtol K., Belfiore A., Bellazzini R.,
Bernieri E., Bissaldi E., Bloom E.D., Bonamente E., Brandt T.J.,
Bregeon J., Brigida M., Bruel P., Buehler R., Burnett T.H., Buson S.,
Caliandro G.A., Cameron R.A., Campana R., Caraveo P.A., Casandjian J.M.,
Cavazzuti E., Cecchi C., Charles E., Chaves R.C.G., Chekhtman A.,
Cheung C.C., Chiang J., Chiaro G., Ciprini S., Claus R., Cohen-Tanugi J.,
Cominsky L.R., Conrad J., Cutini S., D'Ammando F., de Angelis A.,
de Palma F., Dermer C.D., Desiante R., Digel S.W., Di Venere L.,
Drell P.S., Drlica-Wagner A., Favuzzi C., Fegan S.J., Ferrara E.C.,
Focke W.B., Fortin P., Franckowiak A., Funk S., Fusco P., Gargano F.,
Gasparrini D., Gehrels N., Germani S., Giglietto N., Giommi P.,
Giordano F., Giroletti M., Godfrey G., Gomez-Vargas G.A., Grenier I.A.,
Guiriec S., Hadasch D., Hanabata Y., Harding A.K., Hayashida M., Hays E.,
Hewitt J., Hill A.B., Horan D., Hughes R.E., Jogler T., Johannesson G.,
Johnson A.S., Johnson T.J., Johnson W.N., Kamae T., Kataoka J., Kawano T.,
Knodlseder J., Kuss M., Lande J., Larsson S., Latronico L.,
Lemoine-Goumard M., Longo F., Loparco F., Lott B., Lovellette M.N.,
Lubrano P., Massaro E., Mayer M., Mazziotta M.N., McEnery J.E., Mehault J.,
Michelson P.F., Mizuno T., Moiseev A.A., Monzani M.E., Morselli A.,
Moskalenko I.V., Murgia S., Nemmen R., Nuss E., Ohsugi T., Okumura A.,
Orienti M., Ormes J.F., Paneque D., Perkins J.S., Pesce-Rollins M.,
Piron F., Pivato G., Porter T.A., Raino S., Razzano M., Reimer A.,
Reimer O., Reposeur T., Ritz S., Romani R.W., Roth M., Saz Parkinson P.M.,
Schulz A., Sgro C., Siskind E.J., Smith D.A., Spandre G., Spinelli P.,
Stawarz L., Strong A.W., Suson D.J., Takahashi H., Thayer J.G.,
Thayer J.B., Thompson D.J., Tibaldo L., Tinivella M., Torres D.F.,
Tosti G., Troja E., Uchiyama Y., Usher T.L., Vandenbroucke J.,
Vasileiou V., Vianello G., Vitale V., Werner M., Winer B.L., Wood K.S.,
Wood M.
<Astrophys. J. Suppl. Ser., 209, 34 (2013)>
=2013ApJS..209...34A 2013ApJS..209...34A (SIMBAD/NED BibCode)
ADC_Keywords: Gamma rays ; Redshifts
Keywords: catalogs - gamma rays: general
Abstract:
We present a catalog of γ-ray sources at energies above 10 GeV
based on data from the Large Area Telescope (LAT) accumulated during
the first 3yr of the Fermi Gamma-ray Space Telescope mission. The
first Fermi-LAT catalog of >10GeV sources (1FHL) has 514 sources. For
each source we present location, spectrum, a measure of variability,
and associations with cataloged sources at other wavelengths. We found
that 449 (87%) could be associated with known sources, of which 393
(76% of the 1FHL sources) are active galactic nuclei. Of the 27
sources associated with known pulsars, we find 20 (12) to have
significant pulsations in the range >10 GeV (>25 GeV). In this work we
also report that, at energies above 10 GeV, unresolved sources account
for 27%±8% of the isotropic γ-ray background, while the
unresolved Galactic population contributes only at the few percent
level to the Galactic diffuse background. We also highlight the subset
of the 1FHL sources that are best candidates for detection at energies
above 50-100 GeV with current and future ground-based γ-ray
observatories.
Description:
The time interval analyzed here is from the beginning of Fermi LAT
science operations, 2008 August 4 (MET 239557447) to 2011 August 1
(MET 333849586), covering very nearly 3 yr. In this work we analyze
γ rays with energies in the range 10-500 GeV. To limit the
contamination from γ rays produced by cosmic-ray interactions in
the upper atmosphere, γ rays with zenith angles greater than
105° were excluded. To further reduce the residual γ rays
from the upper atmosphere only data for time periods when the
spacecraft rocking angle was less than 52° were considered. See
section 2 for further explanations.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 165 514 LAT catalog of sources above 10GeV
table7.dat 113 393 Characteristics of the 1FHL sources with
AGN associations
--------------------------------------------------------------------------------
See also:
J/ApJS/206/12 : Blazars with γ-ray counterparts. I. (D'Abrusco+, 2013)
J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)
J/ApJ/743/171 : The 2LAC catalog (Ackermann+, 2011)
J/ApJ/742/66 : New Fermi/LAT extragalactic sources (Teng+, 2011)
J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)
J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)
J/ApJ/522/846 : Optical monitoring of GeV loud blazars (Xie+, 1999)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- 1FHL The 1FHL catalog identifier (JHHMM.s+DDMM)
13 A1 --- f_1FHL [e] e: extended source
15- 21 F7.3 deg RAdeg Right Ascension in decimal degrees (J2000)
23- 29 F7.3 deg DEdeg Declination in decimal degrees (J2000)
31- 37 F7.3 deg GLON Galactic longitude
39- 45 F7.3 deg GLAT Galactic latitude
47- 51 F5.3 deg amaj [0.01/0.3]? Semimajor radius of 95%
confidence source location region (1)
53- 57 F5.3 deg amin [0.009/0.2]? Semiminor radius of 95%
confidence source location region (1)
59- 61 I3 deg pa ? Position angle of 95% long axis from
North through East (1)
63- 66 F4.1 --- sig [4/] Source significance in σ units
68- 72 F5.1 10-7/m2/s F10 [4/982] The 10-500 GeV photon flux
(in 10-11ph/cm2/s)
74- 77 F4.1 10-7/m2/s e_F10 [2/82] The 1σ uncertainty in F10
79- 83 F5.1 fW/m2 S10 [1/358] Energy flux from 10-500 GeV from
power-law spectral fit (10-12erg/s/cm2)
85- 88 F4.1 fW/m2 e_S10 The 1σ uncertainty in S10
90- 94 F5.2 --- Gam10 [0.7/11] Photon power-law index Γ
96- 99 F4.2 --- e_Gam10 The 1σ uncertainty in Gam10
101 A1 --- Var [*1-6] Number of change points in Bayesian
Blocks light curve (1 for non-variable);
see text
103-120 A18 --- GName Association with other catalogs of
GeV γ-ray sources, if any
122-122 A1 --- TeV TeV association flag, if any (2)
124-131 A8 --- Class Astrophysical classes of associated source (3)
136-165 A30 --- PName Primary name(s) of associated source (4)
--------------------------------------------------------------------------------
Note (1): This quantity is not defined for the 18 FHL sources
identified as extended.
Note (2): Flag as follows:
P = point-like or small angular size TeV source;
E = extended TeV source;
C = good candidate for TeV detection, as defined in Section 5.
Note (3): Classification (upper case letters are identified designator whereas
lower case letters are associated designator, see table 4)
as follows:
bzb = blazar of the BL Lac type
bzq = blazar of the FSRQ (flat spectrum radio quasar) type
agu = active galaxy of uncertain type
HPSR = Pulsar, identified by pulsations above 10 GeV
PSR = Pulsar, identified by pulsations in LAT (excluding HPSR)
psr = Pulsar, no pulsations seen in LAT yet
snr = Supernova remnant
pwn = Pulsar wind nebula
spp = Unclear whether SNR or PWN
rdg = Radio galaxy
HMB = High-mass binary
GAL = Normal galaxy
SFR = Star forming region
lbv = LBV star
Note (4): Primary name of the associated source or identified counterpart.
Three 1FHL sources have two associations listed here; the two distinct
associated source names and class types are reported (;-separated)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [1FHL]
6- 17 A12 --- 1FHL The 1FHL catalog identifier (JHHMM.m+DDMM)
19- 25 F7.3 deg RAdeg Right Ascension in decimal degrees (J2000)
27- 33 F7.3 deg DEdeg Declination in decimal degrees (J2000)
35- 67 A33 --- Assoc Associated/identified source counterpart (1)
69- 85 A17 --- OClass AGN optical classification (1)
87- 97 A11 --- SClass SED classification (1)
99-103 F5.3 --- z [0.002/2.6]? Redshift
105-109 F5.3 --- z2 ? 2nd distinct redshift found in litterature
110 A1 --- f_z2 [l] Flag on z2 (2)
112-113 I2 --- VBB [1/10] Number of Bayesian Blocks;
see Section 3.3
--------------------------------------------------------------------------------
Note (1): Three 1FHL sources have double associations; the two distinct
associated source names and characteristics are reported (;-separated)
Note (2):
l = Three sources have redshifts in the literature that violate the
spectroscopic lower limits reported in Shaw et al. (2013ApJ...764..135S 2013ApJ...764..135S).
--------------------------------------------------------------------------------
History:
* 22-Jan-2014: From electronic version of the journal
* 21-Feb-2014: in table7, the redshift missing for 1FHL J0323.5-0107
was added at CDS (0.193)
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 22-Jan-2014