2017Sci...358.1299D

Query : 2017Sci...358.1299D

2017Sci...358.1299D - Science, 358, 1299-1302 (2017)

A precise measurement of the magnetic field in the corona of the black hole binary V404 Cygni.

DALLILAR Y., EIKENBERRY S.S., GARNER A., STELTER R.D., GOTTLIEB A., GANDHI P., CASELLA P., DHILLON V.S., MARSH T.R., LITTLEFAIR S.P., HARDY L., FENDER R., MOOLEY K., WALTON D.J., FUERST F., BACHETTI M., CASTRO-TIRADO A.J., CHARCOS M., EDWARDS M.L., LASSO-CABRERA N.M., MARIN-FRANCH A., RAINES S.N., ACKLEY K., BENNETT J.G., CENARRO A.J., CHINN B., DONOSO H.V., FROMMEYER R., HANNA K., HERLEVICH M.D., JULIAN J., MILLER P., MULLIN S., MURPHEY C.H., PACKHAM C., VAROSI F., VEGA C., WARNER C., RAMAPRAKASH A.N., BURSE M., PUNNADI S., CHORDIA P., GERARTS A., DE PAZ MARTIN H., CALERO M.M., SCARPA R., FERNANDEZ ACOSTA S., HERNANDEZ SANCHEZ W.M., SIEGEL B., PEREZ F.F., VIERA MARTIN H.D., RODRIGUEZ LOSADA J.A., NUNEZ A., TEJERO A., MARTIN GONZALEZ C.E., CABRERA RODRIGUEZ C., MOLGO J., RODRIGUEZ J.E., FERNANDEZ CACERES J.I., RODRIGUEZ GARCIA L.A., HUERTAS LOPEZ M., DOMINGUEZ R., GAGGSTATTER T., CABRERA LAVERS A., GEIER S., PESSEV P. and SARAJEDINI A.

Abstract (from CDS):

Observations of binary stars containing an accreting black hole or neutron star often show x-ray emission extending to high energies (>10 kilo-electron volts), which is ascribed to an accretion disk corona of energetic particles akin to those seen in the solar corona. Despite their ubiquity, the physical conditions in accretion disk coronae remain poorly constrained. Using simultaneous infrared, optical, x-ray, and radio observations of the Galactic black hole system V404 Cygni, showing a rapid synchrotron cooling event in its 2015 outburst, we present a precise 461 ± 12 gauss magnetic field measurement in the corona. This measurement is substantially lower than previous estimates for such systems, providing constraints on physical models of accretion physics in black hole and neutron star binary systems.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 4

goto Full paper

goto View the references in ADS

Number of rows : 4
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 V* V381 Nor HXB 15 50 58.6637920704 -56 28 35.258385000           K3III 1254 0
2 V* V821 Ara LXB 17 02 49.3876391280 -48 47 23.087954544         15.322 ~ 2237 0
3 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
4 V* V404 Cyg HXB 20 24 03.8247037434 +33 52 01.961154861           G9/K0III/V 1370 0

To bookmark this query, right click on this link: simbad:objects in 2017Sci...358.1299D and select 'bookmark this link' or equivalent in the popup menu