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

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

1998A&A...337...25R - Astronomy and Astrophysics, volume 33725-30 (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

View the references in ADS

Number of rows : 13

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2026	#notes
1	MCG-01-12-005	BLL	04 25 51.336	-08 33 38.98		15.5		16.9	~	45	3
2	MCG-01-12-006	G	04 25 55.5454098216	-08 34 07.958576820		15.5			~	19	1
3	ESO 362-21	BLL	05 22 57.98464178	-36 27 30.8512953		15.26	14.62	14.48	~	873	2
4	M 1	SNR	05 34 31.8	+22 01 03					~	6516	1
5	V* CM Tau	Psr	05 34 31.9474694616	+22 00 52.153698024					~	5476	0
6	NAME Vela	SNR	08 34.0	-45 50					~	1331	2
7	Z 184-50	BLL	11 04 27.3140835504	+38 12 31.798495872		13.50	12.90	8.31	~	2841	1
8	Z 225-7	BLL	16 53 52.21668403	+39 45 36.6088754	14.09	14.15	13.29	8.26	~	2304	2
9	PSR B1706-44	Psr	17 09 42.62000	-44 29 12.0000			13.30		~	670	1
10	ZW I 187	BLL	17 28 18.6242294352	+50 13 10.469553996		16.55	15.97	12.95	~	396	1
11	PKS J2009-4849	BLL	20 09 25.3903899240	-48 49 53.725051056		15.75	12.81	11.41	~	604	1
12	MCG-07-47-031	BLL	23 19 05.8954756632	-42 06 48.297034584		16.60	15.46		~	121	0
13	QSO B2344+514	BLL	23 47 04.8372110928	+51 42 17.877513168			15.50	10.7	~	500	1

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