2018A&A...612A..27K


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST18:17:00

2018A&A...612A..27K - Astronomy and Astrophysics, volume 612A, 27-27 (2018/4-1)

The hypersoft state of Cygnus X-3. A key to jet quenching in X-ray binaries?

KOLJONEN K.I.I., MACCARONE T., McCOLLOUGH M.L., GURWELL M., TRUSHKIN S.A., POOLEY G.G., PIANO G. and TAVANI M.

Abstract (from CDS):


Context. Cygnus X-3 is a unique microquasar in the Galaxy hosting a Wolf-Rayet companion orbiting a compact object that most likely is a low-mass black hole. The unique source properties are likely due to the interaction of the compact object with the heavy stellar wind of the companion.
Aims. In this paper, we concentrate on a very specific period of time prior to the massive outbursts observed from the source. During this period, Cygnus X-3 is in a so-called hypersoft state, in which the radio and hard X-ray fluxes are found to be at their lowest values (or non-detected), the soft X-ray flux is at its highest values, and sporadic γ-ray emission is observed. We use multiwavelength observations to study the nature of the hypersoft state.
Methods. We observed Cygnus X-3 during the hypersoft state with Swift and NuSTAR in X-rays and SMA, AMI-LA, and RATAN-600 in the radio. We also considered X-ray monitoring data from MAXI and γ-ray monitoring data from AGILE and Fermi.
Results. We found that the spectra and timing properties of the multiwavelength observations can be explained by a scenario in which the jet production is turned off or highly diminished in the hypersoft state and the missing jet pressure allows the wind to refill the region close to the black hole. The results provide proof of actual jet quenching in soft states of X-ray binaries.

Abstract Copyright: © ESO 2018

Journal keyword(s): accretion, accretion disks - binaries: close - stars: individual: Cyg X-3 - stars: winds, outflows - X-rays: binaries

Simbad objects: 7

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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 - 2020
#notes
1 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1719 1
2 2MAXI J1753-013 LXB 17 53 28.2897263704 -01 27 06.256526637 15.30 16.73 16.46 16.15 15.64 ~ 292 0
3 SS 433 HXB 19 11 49.5645897701 +04 58 57.824087535   16.3 13.0     A7Ib: 1941 3
4 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2310 0
5 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3948 0
6 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1778 2
7 EM* MWC 349A * 20 32 45.5290328485 +40 39 36.647044678           ~ 146 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-18:17:00

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