2002ApJ...579L...5B

Query : 2002ApJ...579L...5B

2002ApJ...579L...5B - Astrophys. J., 579, L5-L8 (2002/November-1)

STACEE observations of Markarian 421 during an extended gamma-ray outburst.

BOONE L.M., HINTON J.A., BRAMEL D., CHAE E., COVAULT C.E., FORTIN P., GINGRICH D.M., HANNA D.S., MUKHERJEE R., MUELLER C., ONG R.A., RAGAN K., SCALZO R.A., SCHUETTE D.R., THEORET C.G. and WILLIAMS D.A.

Abstract (from CDS):

The active galaxy Markarian 421 underwent a substantial outburst in early 2001. Between January and May of that year, the STACEE detector was used to observe the source in γ-rays between the energies of 50 and 500 GeV. These observations represent the lowest energy γ-ray detection of this outburst by a ground-based experiment. Here we present results from these observations, which indicate an average integral γ-ray flux of (8.0±0.7±1.5)x10^–10.cm^–2.s^–1 above 140 GeV. We also present a light curve for Markarian 421 as observed by STACEE from March to May and compare our temporal, as well as spectral, measurements with those of other experiments.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: BL Lacertae Objects: Individual: Name: Markarian 421 - Galaxies: Active - Gamma Rays: Observations

Simbad objects: 6

Full paper

View the references in ADS

Number of rows : 6

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	M 1	SNR	05 34 31.8	+22 01 03						~	6516	1
2	V* CM Tau	Psr	05 34 31.9474694616	+22 00 52.153698024						~	5476	0
3	Z 184-50	BLL	11 04 27.3140835504	+38 12 31.798495872		13.50	12.90	8.31		~	2841	1
4	* 51 UMa	PM*	11 04 31.2283728072	+38 14 28.900070520		6.18	6.02	7.39	5.86	A3Vp	83	0
5	* 25 Her	**	16 25 24.1688222784	+37 23 38.586829272	5.790	5.710	5.540			A5V	105	0
6	Z 225-7	BLL	16 53 52.21668403	+39 45 36.6088754	14.09	14.15	13.29	8.26		~	2304	2

To bookmark this query, right click on this link: simbad:objects in 2002ApJ...579L...5B and select 'bookmark this link' or equivalent in the popup menu