2009ApJ...700.1034A

Query : 2009ApJ...700.1034A

2009ApJ...700.1034A - Astrophys. J., 700, 1034-1041 (2009/August-1)

Multiwavelength observations of LS I +61° 303 with veritas, Swift, and RXTE.

ACCIARI V.A., ALIU E., ARLEN T., BAUTISTA M., BEILICKE M., BENBOW W., BOTTCHER M., BRADBURY S.M., BUGAEV V., BUTT Y., BYRUM K., CANNON A., CESARINI A., CHOW Y.C., CIUPIK L., COGAN P., COLIN P., CUI W., DANIEL M., DICKHERBER R., ERGIN T., FALCONE A., FEGAN S.J., FINLEY J.P., FORTIN P., FORTSON L., FURNISS A., GALL D., GILLANDERS G.H., GRUBE J., GUENETTE R., GYUK G., HANNA D., HAYS E., HOLDER J., HORAN D., HUI C.M., HUMENSKY T.B., KAARET P., KARLSSON N., KIEDA D., KILDEA J., KONOPELKO A., KRAWCZYNSKI H., KRENNRICH F., LANG M.J., LEBOHEC S., MAIER G., McCANN A., McCUTCHEON M., MILLIS J., MORIARTY P., MUKHERJEE R., NAGAI T., ONG R.A., OTTE A.N., PANDEL D., PERKINS J.S., POHL M., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., ROACHE E., ROSE H.J., SCHROEDTER M., SEMBROSKI G.H., SMITH A.W., STEELE D., STROH M., SWORDY S., THEILING M., TONER J.A., VARLOTTA A., VASSILIEV V.V., WAGNER R.G., WAKELY S.P., WARD J.E., WEEKES T.C., WEINSTEIN A., WHITE R.J., WILLIAMS D.A., WISSEL S., WOOD M. and ZITZER B.

Abstract (from CDS):

We present results from a long-term monitoring campaign on the TeV binary LSI +61° 303 with VERITAS at energies above 500 GeV, and in the 2-10 keV hard X-ray bands with RXTE and Swift, sampling nine 26.5 day orbital cycles between 2006 September and 2008 February. The binary was observed by VERITAS to be variable, with all integrated observations resulting in a detection at the 8.8σ (2006/2007) and 7.3σ (2007/2008) significance level for emission above 500 GeV. The source was detected during active periods with flux values ranging from 5% to 20% of the Crab Nebula, varying over the course of a single orbital cycle. Additionally, the observations conducted in the 2007-2008 observing season show marginal evidence (at the 3.6σ significance level) for TeV emission outside the apastron passage of the compact object around the Be star. Contemporaneous hard X-ray observations with RXTE and Swift show large variability with flux values typically varying between 0.5 and 3.0 x10^–11 erg/cm2/s over a single orbital cycle. The contemporaneous X-ray and TeV data are examined and it is shown that the TeV sampling is not dense enough to detect a correlation between the two bands.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - gamma rays: observations - X-rays: binaries

Simbad objects: 5

Full paper

View the references in ADS

Number of rows : 5

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	V* CM Tau	Psr	05 34 31.9474694616	+22 00 52.153698024						~	5476	0
4	CPD-63 2495	HXB	13 02 47.6544015048	-63 50 08.626970292	10.34	10.72	9.98	10.03		O9.5Ve	852	0
5	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

To bookmark this query, right click on this link: simbad:objects in 2009ApJ...700.1034A and select 'bookmark this link' or equivalent in the popup menu