2014ApJ...785L..16A

Query : 2014ApJ...785L..16A

2014ApJ...785L..16A - Astrophys. J., 785, L16 (2014/April-2)

Deep broadband observations of the distant gamma-ray blazar PKS 1424+240.

ARCHAMBAULT S., AUNE T., BEHERA B., BEILICKE M., BENBOW W., BERGER K., BIRD R., BITEAU J., BUGAEV V., BYRUM K., CARDENZANA J.V., CERRUTI M., CHEN X., CIUPIK L., CONNOLLY M.P., CUI W., DUMM J., ERRANDO M., FALCONE A., FEDERICI S., FENG Q., FINLEY J.P., FLEISCHHACK H., FORTSON L., FURNISS A., GALANTE N., GILLANDERS G.H., GRIFFIN S., GRIFFITHS S.T., GRUBE J., GYUK G., HANNA D., HOLDER J., HUGHES G., HUMENSKY T.B., JOHNSON C.A., KAARET P., KERTZMAN M., KHASSEN Y., KIEDA D., KRAWCZYNSKI H., KRENNRICH F., KUMAR S., LANG M.J., MADHAVAN A.S., MAIER G., McCANN A., MEAGHER K., MORIARTY P., MUKHERJEE R., NIETO D., O'FAOLAIN DE BHROITHE A., ONG R.A., OTTE A.N., PARK N., POHL M., POPKOW A., PROKOPH H., QUINN J., RAGAN K., RAJOTTE J., REYES L.C., REYNOLDS P.T., RICHARDS G.T., ROACHE E., SEMBROSKI G.H., SHAHINYAN K., STASZAK D., TELEZHINSKY I., TUCCI J.V., TYLER J., VARLOTTA A., VASSILIEV V.V., VINCENT S., WAKELY S.P., WEINSTEIN A., WELSING R., WILHELM A., WILLIAMS D.A. (The VERITAS Collaboration), ACKERMANN M., AJELLO M., ALBERT A., BALDINI L., BASTIERI D., BELLAZZINI R., BISSALDI E., BREGEON J., BUEHLER R., BUSON S., CALIANDRO G.A., CAMERON R.A., CARAVEO P.A., CAVAZZUTI E., CHARLES E., CHIANG J., CIPRINI S., CLAUS R., CUTINI S., D'AMMANDO F., DE ANGELIS A., DE PALMA F., DERMER C.D., DIGEL S.W., DI VENERE L., DRELL P.S., FAVUZZI C., FRANCKOWIAK A., FUSCO P., GARGANO F., GASPARRINI D., GIGLIETTO N., GIORDANO F., GIROLETTI M., GRENIER I.A., GUIRIEC S., JOGLER T., KUSS M., LARSSON S., LATRONICO L., LONGO F., LOPARCO F., LUBRANO P., MADEJSKI G.M., MAYER M., MAZZIOTTA M.N., MICHELSON P.F., MIZUNO T., MONZANI M.E., MORSELLI A., MURGIA S., NUSS E., OHSUGI T., ORMES J.F., PANEQUE D., PERKINS J.S., PIRON F., PIVATO G., RAINO S., RAZZANO M., REIMER A., REIMER O., RITZ S., SCHAAL M., SGRO C., SISKIND E.J., SPINELLI P., TAKAHASHI H., TIBALDO L., TINIVELLA M., TROJA E., VIANELLO G., WERNER M., WOOD M. (The Fermi-LAT Collaboration)

Abstract (from CDS):

We present deep VERITAS observations of the blazar PKS 1424+240, along with contemporaneous Fermi Large Area Telescope, Swift X-ray Telescope, and Swift UV Optical Telescope data between 2009 February 19 and 2013 June 8. This blazar resides at a redshift of z ≥ 0.6035, displaying a significantly attenuated gamma-ray flux above 100 GeV due to photon absorption via pair-production with the extragalactic background light. We present more than 100 hr of VERITAS observations over three years, a multiwavelength light curve, and the contemporaneous spectral energy distributions. The source shows a higher flux of (2.1±0.3)x10–7 photons/m2/s above 120 GeV in 2009 and 2011 as compared to the flux measured in 2013, corresponding to (1.02±0.08)x10–7 photons/m2/s above 120 GeV. The measured differential very high energy (VHE; E ≥ 100 GeV) spectral indices are Γ = 3.8±0.3, 4.3±0.6 and 4.5±0.2 in 2009, 2011, and 2013, respectively. No significant spectral change across the observation epochs is detected. We find no evidence for variability at gamma-ray opacities of greater than τ = 2, where it is postulated that any variability would be small and occur on timescales longer than a year if hadronic cosmic-ray interactions with extragalactic photon fields provide a secondary VHE photon flux. The data cannot rule out such variability due to low statistics.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: individual: PKS 1424+240 - cosmic background radiation - gamma rays: galaxies

Simbad objects: 1

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Number of rows : 1
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 PG 1424+240 BLL 14 27 00.3917926224 +23 48 00.037510776 14.52 14.34 14.95 14.5   ~ 420 1

Query : 2014ApJ...785L..16A

Basic data :
PG 1424+240 -- BL Lac
Other object types: otypes_help 		Rad (2020A&A,7C,...), BLL (2010ApJ,[VV2000b],...), gam (0FGL,1FGL,...), Bla (2013ApJS,[DGT2001],...), X (2009A&A,2E,...), QSO (2016A&A,QSO), Opt (ATO,LAMOST,...), AGN (2011ApJ), Bz? (2022ApJS,2WHSP), * (GJ,Gaia), UV (KUV,PG), MIR (WISEA,WISE), WD* (WD), BL? (2021MNRAS), Q? (FBQS), Em* (2023ApJS), V* (2018AJ), G (2021AJ), NIR (2MASS)
ICRS coord. (ep=J2000) : 		14 27 00.3917926224 +23 48 00.037510776 (Optical) [ 0.0121 0.0130 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 24 44.2306102071 +24 01 25.898465381 [ 0.0121 0.0130 90 ]
Gal coord. (ep=J2000) : 		029.4873550680989 +68.2076211736138 [ 0.0121 0.0130 90 ]
Proper motions mas/yr : 		-0.005 -0.015 [0.016 0.018 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 132049 [60] / z(spectroscopic) 0.6045 [0.0002] / cz 181225 [60]
   (Opt) C 2024A&A...683A.222D
Fluxes (13) :
U (AB) 14.52 [0.04] D 2007ApJS..173..471M
B (AB) 14.34 [0.03] D 2007ApJS..173..471M
V 14.95 [~] D 2010A&A...518A..10V
R 14.5 [~] E 2009A&A...495..691M
G 14.043704 [0.005908] C 2020yCat.1350....0G
J 12.680 [0.025] C 2003yCat.2246....0C
H 11.966 [0.032] C 2003yCat.2246....0C
K 11.276 [0.020] C 2003yCat.2246....0C
u (AB) 15.261 [0.005] C 2009ApJS..182..543A
g (AB) 14.878 [0.003] C 2009ApJS..182..543A
r (AB) 14.561 [0.004] C 2009ApJS..182..543A
i (AB) 14.331 [0.004] C 2009ApJS..182..543A
z (AB) 14.143 [0.004] C 2009ApJS..182..543A
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Identifiers (80) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 142443.8+240125 FIRST J142700.4+234800 PKS 1424+240 WB 1424+2401
ATO J216.7516+23.8000 FL8Y J1427.0+2348 QSO B1424+240 WD 1424+240
B2.4 1424+24 GB6 B1424+2401 QSO J1427+2348 2WHSP J142700.3+234800
BWE 1424+2401 87GB 142444.2+240123 RBS 1395 WISEA J142700.39+234800.0
7C 1424+2401 GJ 3848 RFC J1427+2348 WISE J142700.40+234800.1
CLASS J142700.3941+234800.044 GLEAM J142700+234806 RGB J1427+238 9Y-MST J1427+2348
CRATES J142700+234802 ICRF J142700.3+234800 RGB J1427.0+2347 [DGT2001] B1424+240
2E 3271 IERS B1424+240 RORF 1424+240 [HMI96] 1424+2401
2E 1424.7+2401 INTREF 604 RX J1427.0+2348 [IN88] 1424+240
EF B1424+2401 IVS B1424+240 1RXS J142700.5+234803 [MGL2009] BZB J1427+2348
1ES 1424+24.0 JVAS B1424+240 SDSS J142700.39+234800.0 [MML2015] 5BZB J1427+2348
FBQS J1427+2348 JVAS J1427+2348 TeV J1427+238 [VV2000b] J142700.5+234800
0FGL J1427.1+2347 KUV 14247+2401 TGSSADR J142700.3+234801 [VV2003b] J142700.5+234800
1FGL J1426.9+2347 LAMOST J142700.39+234800.0 TIC 424782650 [VV2006b] J142700.5+234800
2FGL J1427.0+2347 2MASS J14270038+2348000 TXS 1424+240 [VV2010b] J142700.5+234800
3FGL J1427.0+2347 MITG J142700+2348 VCS1 J1427+2348 [VV98b] J142700.5+234800
4FGL J1427.0+2348 NVSS J142700+234800 VER J1427+237 [ZEH2003] RX J1427.0+2348 2
1FHL J1427.0+2347 OHIO Q 240 VIPS J14270+2348 Gaia DR3 1254715738511038976
2FHL J1427.0+2348 PG 1424+240 VLSSr J142700.5+234757 Gaia DR1 1254715734215404544
3FHL J1427.0+2348 PKS J1427+2348 VLSS J1427.0+2347 Gaia DR2 1254715738511038976

References (420 between 1850 and 2026) (Total 420)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 2    Var : 1    Fe/H : 1    PM : 3    SpT : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : PG 1424+240

Link by name to the catalogue in VizieR :

BWE 1424+2401 2E 3271 FIRST J142700.4+234800 GJ 3848 IERS B1424+240
2MASS J14270038+2348000 MITG J142700+2348 NVSS J142700+234800 PG 1424+240 PKS J1427+2348
PKS 1424+240 1RXS J142700.5+234803 SDSS J142700.39+234800.0 WD 1424+240 WISEA J142700.39+234800.0
WISE J142700.40+234800.1 Gaia DR3 1254715738511038976 Gaia DR1 1254715734215404544 Gaia DR2 1254715738511038976

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