1998A&A...337...25R


Query : 1998A&A...337...25R

1998A&A...337...25R - Astronomy and Astrophysics, volume 337, 25-30 (1998/9-1)

TeV gamma-ray observations of southern BL Lacs with the CANGAROO 3.8m Imaging Telescope.

ROBERTS M.D., DAZELEY S.A., EDWARDS P.G., HARA T., HAYAMI Y., HOLDER J., KAKIMOTO F., KAMEI S., KAWACHI A., KIFUNE T., KITA R., KONISHI T., MASAIKE A., MATSUBARA Y., MATSUOKA T., MIZUMOTO Y., MORI M., MURAISHI H., MURAKI Y., NISHIJIMA K., ODA S., OGIO S., PATTERSON J.R., ROWELL G.P., SAKO T., SAKURAZAWA K., SUSUKITA R., SUZUKI A., SUZUKI R., TAMURA T., TANIMORI T., THORNTON G.J., YANAGITA S., YOSHIDA T. and YOSHIKOSHI T.

Abstract (from CDS):

Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS 0521-365, EXO 0423.4-0840, PKS 2005-489 and PKS 2316-423) made between 1993 and 1996 with the CANGAROO 3.8m imaging Cerenkov telescope. During the period of these observations the gamma-ray energy threshold of the 3.8mtelescope was ∼2TeV. Searches for steady long-term emission have been made, and, inspired by the TeV flares detected from Mkn 421 and Mkn 501, a search on a night-by-night timescale has also been performed for each source. Comprehensive Monte Carlo simulations are used to estimate upper limits for both steady and short timescale emission.

Abstract Copyright:

Journal keyword(s): gamma-rays: observations - BL Lacertae objects: individual: PKS 0521-365, EXO 0423.4-0840, PKS 2005-489, PKS 2316-423

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 MCG-01-12-005 Sy2 04 25 51.336 -08 33 38.98   15.5   16.9   ~ 40 2
2 MCG-01-12-006 G 04 25 55.5454098216 -08 34 07.958576820   15.5       ~ 16 1
3 QSO B0521-365 BLL 05 22 57.9841341216 -36 27 30.847204512   15.26 14.62 14.48   ~ 773 2
4 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5027 0
5 M 1 SNR 05 34 32 +22 00.8           ~ 5903 1
6 NAME Vela XYZ Rad 08 34.0 -45 50           ~ 1167 2
7 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2510 1
8 4C 39.49 BLL 16 53 52.2160772976 +39 45 36.613228860 14.09 14.15 13.29 8.26   ~ 2015 2
9 PSR B1706-44 Psr 17 09 42.7460 -44 29 07.200     13.30     ~ 605 1
10 6C 172704+501607 BLL 17 28 18.6242294352 +50 13 10.469553996   16.55 15.97 12.95   ~ 341 1
11 QSO B2005-489 BLL 20 09 25.3903899240 -48 49 53.725051056   15.75 12.81 11.41   ~ 535 2
12 MCG-07-47-031 BLL 23 19 05.8954756632 -42 06 48.297034584   16.60 15.46     ~ 96 1
13 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 410 0

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2022.05.19-16:17:23

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