2007ApJ...658L..33A

Query : 2007ApJ...658L..33A

2007ApJ...658L..33A - Astrophys. J., 658, L33-L36 (2007/March-3)

Discovery of TeV gamma-ray emission from the Cygnus region of the galaxy.

ABDO A.A., ALLEN B., BERLEY D., BLAUFUSS E., CASANOVA S., CHEN C., COYNE D.G., DELAY R.S., DINGUS B.L., ELLSWORTH R.W., FLEYSHER L., FLEYSHER R., GEBAUER I., GONZALEZ M.M., GOODMAN J.A., HAYS E., HOFFMAN C.M., KOLTERMAN B.E., KELLEY L.A., LANSDELL C.P., LINNEMANN J.T., McENERY J.E., MINCER A.I., MOSKALENKO I.V., NEMETHY P., NOYES D., RYAN J.M., SAMUELSON F.W., SAZ PARKINSON P.M., SCHNEIDER M., SHOUP A., SINNIS G., SMITH A.J., STRONG A.W., SULLIVAN G.W., VASILEIOU V., WALKER G.P., WILLIAMS D.A., XU X.W. and YODH G.B.

Abstract (from CDS):

The diffuse gamma radiation arising from the interaction of cosmic-ray particles with matter and radiation in the Galaxy is one of the few probes available to study the origin of the cosmic rays. Data from the Milagro gamma-ray observatory–a water Cerenkov detector that continuously views ∼2 sr of the overhead sky–shows that the brightest extended region in the entire northern sky is the Cygnus region of the Galactic plane. The TeV image of the Cygnus region contains at least one new source, MGRO J2019+37, which is 10.9 σ above the isotropic background, as well as correlations with the matter density in the region. However, the gamma-ray flux from the Cygnus region (after excluding MGRO J2019+37) as measured at ∼12 TeV exceeds that predicted from a model of cosmic-ray production and propagation. This observation indicates the existence of either hard-spectrum cosmic-ray sources and/or unresolved sources of TeV gamma rays in the region.

Abstract Copyright: ∼

Journal keyword(s): Acceleration of Particles - ISM: Cosmic Rays - Gamma Rays: Observations - pulsars: individual (G75.2+0.1)

Simbad objects: 11

Full paper

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	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	QSO J2015+371	BLL	20 15 28.72978661	+37 10 59.5147372			21.82	21.4	~	324	2
4	1LHAASO J2018+3643u	gam	20 18.6	+36 43					~	67	0
5	PSR J2021+3651	Psr	20 21 05.40	+36 51 04.5					~	218	1
6	Cl Berkeley 87	OpC	20 21 35.0	+37 25 14					~	141	0
7	GRO J2021+37	gam	20 22 37.2	+37 16 53					~	94	2
8	TeV J2032+4130	gam	20 31.7	+41 31					~	148	0
9	NAME Cyg Complex	reg	20 32	+45.0					~	667	0
10	[MT91] 213	Psr	20 32 13.1247390384	+41 27 24.346666440	13.12	13.08	11.266		B0Vp	334	0
11	Ass Cyg OB 2	As*	20 33.2	+41 19					~	1023	0

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