2016ApJ...817L...7A

Query : 2016ApJ...817L...7A

2016ApJ...817L...7A - Astrophys. J., 817, L7 (2016/January-3)

Exceptionally bright TeV flares from the binary LS I +61 303.

ARCHAMBAULT S., ARCHER A., AUNE T., BARNACKA A., BENBOW W., BIRD R., BUCHOVECKY M., BUCKLEY J.H., BUGAEV V., BYRUM K., CARDENZANA J.V., CERRUTI M., CHEN X., CIUPIK L., COLLINS-HUGHES E., CONNOLLY M.P., CUI W., DICKINSON H.J., DUMM J., EISCH J.D., FALCONE A., FENG Q., FINLEY J.P., FLEISCHHACK H., FLINDERS A., FORTIN P., FORTSON L., FURNISS A., GILLANDERS G.H., GRIFFIN S., GRUBE J., GYUK G., HUTTEN M., HAKANSSON N., HANNA D., HOLDER J., HUMENSKY T.B., JOHNSON C.A., KAARET P., KAR P., KELLEY-HOSKINS N., KERTZMAN M., KHASSEN Y., KIEDA D., KRAUSE M., KRENNRICH F., KUMAR S., LANG M.J., MAIER G., McARTHUR S., McCANN A., MEAGHER K., MILLIS J., MORIARTY P., MUKHERJEE R., NIETO D., O'BRIEN S., O'FAOLAIN DE BHROITHE A., ONG R.A., OTTE A.N., PANDEL D., PARK N., PELASSA V., POHL M., POPKOW A., PUESCHEL E., QUINN J., RAGAN K., REYNOLDS P.T., RICHARDS G.T., ROACHE E., ROUSSELLE J., RULTEN C., SANTANDER M., SEMBROSKI G.H., SHAHINYAN K., SMITH A.W., STASZAK D., TELEZHINSKY I., TUCCI J.V., TYLER J., VINCENT S., WAKELY S.P., WEINER O.M., WEINSTEIN A., WILHELM A., WILLIAMS D.A. and ZITZER B.

Abstract (from CDS):

The TeV binary system LS I +61° 303 is known for its regular, non-thermal emission pattern that traces the orbital period of the compact object in its 26.5 day orbit around its B0 Ve star companion. The system typically presents elevated TeV emission around apastron passage with flux levels between 5% and 15% of the steady flux from the Crab Nebula (>300 GeV). In this article, VERITAS observations of LS I +61° 303 taken in late 2014 are presented, during which bright TeV flares around apastron at flux levels peaking above 30% of the Crab Nebula flux were detected. This is the brightest such activity from this source ever seen in the TeV regime. The strong outbursts have rise and fall times of less than a day. The short timescale of the flares, in conjunction with the observation of 10 TeV photons from LS I +61° 303 during the flares, provides constraints on the properties of the accelerator in the source.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - gamma-rays: general - stars: individual: (LS I +61° 303, VER J0240+612) - X-rays: binaries

Simbad objects: 7

Full paper

View the references in ADS

Number of rows : 7

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	LS I +61 303	HXB	02 40 31.6644419688	+61 13 45.593918580	11.27	11.61	10.75	10.19	9.55	B0Ve	903	2
2	M 1	SNR	05 34 31.8	+22 01 03						~	6516	1
3	HD 259440	HXB	06 32 59.2566076656	+05 48 01.160755848	9.17	9.63	9.15			B0pe	256	0
4	1FGL J1018.6-5856	HXB	10 18 55.5875706288	-58 56 45.975246900		13.638	12.683			O6V((f))	156	0
5	CPD-63 2495	HXB	13 02 47.6544015048	-63 50 08.626970292	10.34	10.72	9.98	10.03		O9.5Ve	852	0
6	V* V479 Sct	HXB	18 26 15.0561548880	-14 50 54.247274304	12.02	12.23	11.27	11.04		ON6V((f))z	613	2
7	TeV J2032+4130	gam	20 31.7	+41 31						~	148	0

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