Optical and ultraviolet observations of the X-ray globular cluster BO 158 in M31

1982 ◽  
Vol 261 ◽  
pp. 77 ◽  
Author(s):  
C. Cacciari ◽  
A. Cassatella ◽  
L. Bianchi ◽  
F. Fusi Pecci ◽  
R. G. Kron
Keyword(s):  
Globular Cluster ◽  
X Ray ◽  
Ultraviolet Observations

scholarly journals Time-Resolved Ultraviolet Observations of the Globular Cluster X-Ray Source in NGC 6624: The Shortest Known Period Binary System

1997 ◽  
Vol 482 (1) ◽  
pp. L69-L72 ◽  
Author(s):  
Scott F. Anderson ◽  
Bruce Margon ◽  
Eric W. Deutsch ◽  
Ronald A. Downes ◽  
Richard G. Allen
Keyword(s):  
Binary System ◽  
Globular Cluster ◽  
Time Resolved ◽  
X Ray ◽  
Ultraviolet Observations

scholarly journals A Deep X-ray Survey of the globular cluster Omega Centauri

2018 ◽  
Vol 479 (2) ◽  
pp. 2834-2852 ◽  
Author(s):  
Simon Henleywillis ◽  
Adrienne M Cool ◽  
Daryl Haggard ◽  
Craig Heinke ◽  
Paul Callanan ◽  
...  
Keyword(s):  
Globular Cluster ◽  
X Ray

scholarly journals TRANSIENT EXTREMELY SOFT X-RAY EMISSION FROM THE UNUSUALLY BRIGHT CATACLYSMIC VARIABLE IN THE GLOBULAR CLUSTER M3: A NEW CV X-RAY LUMINOSITY RECORD?

2011 ◽  
Vol 732 (1) ◽  
pp. 46 ◽  
Author(s):  
W. S. Stacey ◽  
C. O. Heinke ◽  
R. F. Elsner ◽  
P. D. Edmonds ◽  
M. C. Weisskopf ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Cataclysmic Variable ◽  
X Ray

scholarly journals An Unusual X-Ray Burst from the Globular Cluster M28

1997 ◽  
Vol 490 (2) ◽  
pp. L161-L164 ◽  
Author(s):  
E. V. Gotthelf ◽  
S. R. Kulkarni
Keyword(s):  
Globular Cluster ◽  
X Ray

scholarly journals X-ray and ultraviolet observations of the dwarf nova VW Hyi in quiescence

2003 ◽  
Vol 346 (4) ◽  
pp. 1231-1241 ◽  
Author(s):  
Dirk Pandel ◽  
France A. Córdova ◽  
Steve B. Howell
Keyword(s):  
X Ray ◽  
Dwarf Nova ◽  
Ultraviolet Observations

scholarly journals A Chandra look at the X-ray faint millisecond pulsars in the globular cluster NGC 6752

2014 ◽  
Vol 441 (1) ◽  
pp. 757-768 ◽  
Author(s):  
L. M. Forestell ◽  
C. O. Heinke ◽  
H. N. Cohn ◽  
P. M. Lugger ◽  
G. R. Sivakoff ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Millisecond Pulsars ◽  
X Ray

The Low-Mass X-Ray Binary Globular Cluster Connection in the ACS Virgo Cluster Survey

2008 ◽  
pp. 305-306
Author(s):  
A. Jordán ◽  
G.R. Sivakoff ◽  
C.L. Sarazin ◽  
J.P. Blakeslee ◽  
E.L. Blanton ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Virgo Cluster ◽  
X Ray ◽  
Cluster Survey ◽  
Low Mass

A Search for Optical Couterparts of Globular Cluster X-Ray Sources

1988 ◽  
pp. 683-684
Author(s):  
Michel Aurière ◽  
Claude Chevalier ◽  
Sergio Ilovaisky ◽  
Lydie Koch-Miramond ◽  
Jean-Pierre Cordoni
Keyword(s):  
Globular Cluster ◽  
X Ray

scholarly journals Regulation of accretion by its outflow in a symbiotic star: the 2016 outflow fast state of MWC 560

2020 ◽  
Vol 492 (3) ◽  
pp. 3107-3127 ◽  
Author(s):  
Adrian B Lucy ◽  
J L Sokoloski ◽  
U Munari ◽  
Nirupam Roy ◽  
N Paul M Kuin ◽  
...  
Keyword(s):  
Symbiotic Star ◽  
Fast State ◽  
Low Velocity ◽  
X Ray ◽  
Broad Absorption Line ◽  
Multi Wavelength ◽  
Order Of Magnitude ◽  
The Stability ◽  
Ultraviolet Observations ◽  
Optical Flux

ABSTRACT How are accretion discs affected by their outflows? To address this question for white dwarfs accreting from cool giants, we performed optical, radio, X-ray, and ultraviolet observations of the outflow-driving symbiotic star MWC 560 (≡V694 Mon) during its 2016 optical high state. We tracked multi-wavelength changes that signalled an abrupt increase in outflow power at the initiation of a months-long outflow fast state, just as the optical flux peaked: (1) an abrupt doubling of Balmer absorption velocities; (2) the onset of a 20 μJy per month increase in radio flux; and (3) an order-of-magnitude increase in soft X-ray flux. Juxtaposing to prior X-ray observations and their coeval optical spectra, we infer that both high-velocity and low-velocity optical outflow components must be simultaneously present to yield a large soft X-ray flux, which may originate in shocks where these fast and slow absorbers collide. Our optical and ultraviolet spectra indicate that the broad absorption-line gas was fast, stable, and dense (≳106.5  cm−3) throughout the 2016 outflow fast state, steadily feeding a lower density (≲105.5 cm−3) region of radio-emitting gas. Persistent optical and ultraviolet flickering indicate that the accretion disc remained intact. The stability of these properties in 2016 contrasts to their instability during MWC 560’s 1990 outburst, even though the disc reached a similar accretion rate. We propose that the self-regulatory effect of a steady fast outflow from the disc in 2016 prevented a catastrophic ejection of the inner disc. This behaviour in a symbiotic binary resembles disc/outflow relationships governing accretion state changes in X-ray binaries.

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