2003A&A...403..523A

Query : 2003A&A...403..523A

2003A&A...403..523A - Astronomy and Astrophysics, volume 403523-528 (2003/5-4)

Observations of H1426+428 with HEGRA. Observations in 2002 and reanalysis of 1999 & 2000 data.

AHARONIAN F., AKHPERJANIAN A., BEILICKE M., BERNLOEHR K., BOERST H.-G., BOJAHR H., BOLZ O., COARASA T., CONTRERAS J.L., CORTINA J., COSTAMANTE L., DENNINGHOFF S., FONSECA M.V., GIRMA M., GOETTING N., HEINZELMANN G., HERMANN G., HEUSLER A., HOFMANN W., HORNS D., JUNG I., KANKANYAN R., KESTEL M., KOHNLE A., KONOPELKO A., KORNMEYER H., KRANICH D., LAMPEITL H., LOPEZ M., LORENZ E., LUCARELLI F., MANG O., MAZINE D., MEYER H., MIRZOYAN R., MORALEJO A., ONA-WILHELMI E., PANTER M., PLYASHESHNIKOV A., PRAHL J., PUEHLHOFER G., DE LOS REYES R., RHODE W., RIPKEN J., ROWELL G., SAHAKIAN V., SAMORSKI M., SCHILLING M., SIEMS M., SOBZYNSKA D., STAMM W., TLUCZYKONT M., VITALE V., VOELK H.J., WIEDNER C.A. and WITTEK W.

Abstract (from CDS):

The HEGRA system of imaging air Cherenkov telescopes has been used to observe the BL Lac object H1426+428 (z=0.129) for 217.5 hours in 2002. In this data set alone, the source is detected at a confidence level of 5.3 σ, confirming this object as a TeV source. The overall flux level during the observations in 2002 is found to be a factor of ≃2.5 lower than during the previous observations by HEGRA in 1999 and 2000. A new spectral analysis has been carried out, improving the signal-to-noise ratio at the expense of a slightly increased systematic uncertainty and reducing the relative energy resolution to ΔE/E≤12% over a wide range of energies. The new method has also been applied to the previously published data set taken in 1999 and 2000, confirming the earlier claim of a flattening of the energy spectrum between 1 and 5TeV. The data set taken in 2002 shows again a signal at energies above 1TeV. We combine the energy spectra as determined by the CAT and VERITAS groups with our reanalyzed result of the 1999 and 2000 data set and apply a correction to account for effects of absorption of high energy photons on extragalactic background light in the optical to mid infrared band. The shape of the inferred source spectrum is mostly sensitive to the characteristics of the extragalactic background light between wavelengths of 1 and 15µm.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: individual: H1426+428 - gamma-rays: observations - intergalactic medium

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 RX J1428.5+4240 BLL 14 28 32.6090008440 +42 40 21.048123396   16.95 16.45 14.4   ~ 549 1

Query : 2003A&A...403..523A

Basic data :
RX J1428.5+4240 -- BL Lac
Other object types: otypes_help 		X (2007AJ,3A,...), Rad (BWE,CLASS,...), BLL (2010ApJ,SHBL,...), Bla (2012ApJ,[DGT2001],...), gam (1FGL,2FGL,...), Bz? (2019A&A,3HSP,...), G (2014ApJ,LEDA,...), UV (2EUVE,EUVE,...), QSO (QSO,[HB93]), BL? (2007AJ), rG (2018AJ), AGN (2011ApJ), * (Gaia), blu (CSO), NIR (2MASS), MIR (WISE), Opt (SDSS)
ICRS coord. (ep=J2000) : 		14 28 32.6090008440 +42 40 21.048123396 (Optical) [ 0.0543 0.0628 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 26 35.9584182523 +42 53 42.390496755 [ 0.0543 0.0628 90 ]
Gal coord. (ep=J2000) : 		077.4871563276180 +64.8989384718024 [ 0.0543 0.0628 90 ]
Proper motions mas/yr : 		-0.006 0.001 [0.064 0.089 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 36284 [150] / z(emission) 0.12933329 [0.0005] / cz 38773.1449 [150]
   (Opt) C 2022ApJS..261....2K
Angular size (arcmin): 		0.193 0.143 130 (NIR) C 2006AJ....131.1163S
Fluxes (12) :
B 16.95 [~] D 2010A&A...518A..10V
V 16.45 [~] D 2010A&A...518A..10V
R 14.4 [~] E 2009A&A...495..691M
G 17.413275 [0.006569] C 2020yCat.1350....0G
J 14.106 [0.077] C 2006AJ....131.1163S
H 13.200 [0.084] C 2006AJ....131.1163S
K 12.985 [0.108] D 2006AJ....131.1163S
u (AB) 17.448 [0.012] C 2009ApJS..182..543A
g (AB) 16.743 [0.005] B 2012ApJS..203...21A
r (AB) 16.145 [0.004] B 2012ApJS..203...21A
i (AB) 15.806 [0.004] B 2012ApJS..203...21A
z (AB) 15.564 [0.007] B 2012ApJS..203...21A
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Identifiers (77) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

QSO B1426+428 87GB 142634.5+425353 RE J142837+424030 WN B1426.5+4253
3A 1422+425 1H 1430+423 RGB J1428+426 2XMM J142832.6+424021
1AXG J142832+4239 1H 1426+428 RX J1428.5+4240 XSS J14278+4240
BWE 1426+4253 H 1426+427 1RXS J142832.6+424028 9Y-MST J1428+4240
CLASS J142832.6071+424021.056 H 1426+428 SDSS J142832.60+424021.0 [BAG2012] 217.2120+42.6515
CSO 454 3HSP J142832.6+424021 SHBL J142832.6+424024 [DGT2001] B1426+428
1ES 1426+42.8 IERS B1426+428 SRGA J142833.1+424011 [HB93] 1426+428
2EUVE J1428+42.6 ILT J142832.72+424022.5 SWIFT J1428.8+4240 [MGL2009] BZB J1428+4240
EUVE J1428+42.6 INTREF 608 SWIFT J1428.7+4234 [MML2015] 5BZB J1428+4240
1FGL J1428.7+4239 IVS B1426+428 SWIFT J1428.8+4239 [VV2000b] J142832.7+424021
2FGL J1428.6+4240 LEDA 2203750 TeV J1428+426 [VV2003b] J142832.7+424021
3FGL J1428.5+4240 2MASS J14283260+4240209 TGSSADR J142832.7+424023 [VV2006b] J142832.7+424021
4FGL J1428.5+4240 2MASX J14283260+4240210 TIC 158033726 [VV2010b] J142832.7+424021
1FHL J1428.6+4239 2MAXI J1429+425 2U 1443+43 [VV98b] J142832.7+424021
2FHL J1428.5+4239 NVSS J142832+424022 3U 1443+43 [ZEH2003] RX J1428.5+4240 2
3FHL J1428.5+4240 PBC J1428.6+4239 4U 1444+43 Gaia DR3 1492521480621768064
FIRST J142832.6+424021 RBS 1399 1WGA J1428.5+4240 Gaia DR2 1492521480621768064
FL8Y J1428.5+4240 2RE J142836+424116 2WHSP J142832.5+424020
GB6 J1428+4240 2RE J1428+424 WISE J142832.62+424021.0
GB6 B1426+4253 RE J1428+424 WISE J142832.61+424021.0

References (549 between 1850 and 2026) (Total 549)
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 : 9    PM : 2   

   

Observing logs
XMM : 4   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : RX J1428.5+4240

Link by name to the catalogue in VizieR :

BWE 1426+4253 EUVE J1428+42.6 FIRST J142832.6+424021 IERS B1426+428 2MASS J14283260+4240209
2MASX J14283260+4240210 NVSS J142832+424022 2RE J142836+424116 2RE J1428+424 1RXS J142832.6+424028
SDSS J142832.60+424021.0 WISE J142832.62+424021.0 WISE J142832.61+424021.0 WN B1426.5+4253 Gaia DR3 1492521480621768064
Gaia DR2 1492521480621768064

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