2013ApJ...762...92A

Query : 2013ApJ...762...92A

2013ApJ...762...92A - Astrophys. J., 762, 92 (2013/January-2)

Rapid TeV gamma-ray flaring of BL Lacertae.

ARLEN T., AUNE T., BEILICKE M., BENBOW W., BOUVIER A., BUCKLEY J.H., BUGAEV V., CESARINI A., CIUPIK L., CONNOLLY M.P., CUI W., DICKHERBER R., DUMM J., ERRANDO M., FALCONE A., FEDERICI S., FENG Q., FINLEY J.P., FINNEGAN G., FORTSON L., FURNISS A., GALANTE N., GALL D., GRIFFIN S., GRUBE J., GYUK G., HANNA D., HOLDER J., HUMENSKY T.B., KAARET P., KARLSSON N., KERTZMAN M., KHASSEN Y., KIEDA D., KRAWCZYNSKI H., KRENNRICH F., MAIER G., MORIARTY P., MUKHERJEE R., NELSON T., O'FAOLAIN DE BHROITHE A., ONG R.A., ORR M., PARK N., PERKINS J.S., PICHEL A., POHL M., PROKOPH H., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., ROACHE E., SAXON D.B., SCHROEDTER M., SEMBROSKI G.H., STASZAK D., TELEZHINSKY I., TESIC G., THEILING M., TSURUSAKI K., VARLOTTA A., VINCENT S., WAKELY S.P., WEEKES T.C., WEINSTEIN A., WELSING R., WILLIAMS D.A., ZITZER B. (The VERITAS Collaboration), JORSTAD S.G., MacDONALD N.R., MARSCHER A.P., SMITH P.S., WALKER R.C., HOVATTA T., RICHARDS J., MAX-MOERBECK W., READHEAD A., LISTER M.L., KOVALEV Y.Y., PUSHKAREV A.B., GURWELL M.A., LAHTEENMAKI A., NIEPPOLA E., TORNIKOSKI M. and JARVELA E.

Abstract (from CDS):

We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flaring activity was observed during a 34.6 minute exposure, when the integral flux above 200 GeV reached (3.4±0.6)x10–6 photons m–2/s, roughly 125% of the Crab Nebula flux measured by VERITAS. The light curve indicates that the observations missed the rising phase of the flare but covered a significant portion of the decaying phase. The exponential decay time was determined to be 13±4 minutes, making it one of the most rapid gamma-ray flares seen from a TeV blazar. The gamma-ray spectrum of BL Lacertae during the flare was soft, with a photon index of 3.6±0.4, which is in agreement with the measurement made previously by MAGIC in a lower flaring state. Contemporaneous radio observations of the source with the Very Long Baseline Array revealed the emergence of a new, superluminal component from the core around the time of the TeV gamma-ray flare, accompanied by changes in the optical polarization angle. Changes in flux also appear to have occurred at optical, UV, and GeV gamma-ray wavelengths at the time of the flare, although they are difficult to quantify precisely due to sparse coverage. A strong flare was seen at radio wavelengths roughly four months later, which might be related to the gamma-ray flaring activities. We discuss the implications of these multiwavelength results.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: individual (BL Lacertae, VER J2202+422) - gamma rays: galaxies

CDS comments: Knot K11 is not in SIMBAD.

Simbad objects: 11

goto Full paper

goto View the references in ADS

Number of rows : 11
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 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
2 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
3 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
4 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
5 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
6 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
7 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0
8 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
9 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
10 VER J2202+422 gam 22 02 37.0 +42 15 25           ~ 2 0
11 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1

To bookmark this query, right click on this link: simbad:objects in 2013ApJ...762...92A and select 'bookmark this link' or equivalent in the popup menu