First e-VLBI observations of GRS 1915+105

Rushton, A.; Spencer, R. E.; Strong, M.; Campbell, R. M.; Casey, Simon; Fender, R. P.; Garrett, M. A.; Miller-Jones, J. C. A.; Pooley, G. G.; Reynolds, C.; Szomoru, Arpad; Tudose, V.; Paragi, Z.

doi:10.1111/j.1745-3933.2006.00262.x

Cited by 13 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to selection effects that limit most observations to periods of strong radio emission, only a few high-resolution observations have been taken in this state. e-EVN observations taken in this state during April 2006 (Rushton et al 2007) showed no evidence for any compact jet, unlike the jet observed by Fuchs et al (2003), suggesting no outflow of material. Likewise, MERLIN observations taken in 1999 showed no large scale structure, despite X-rays flares, suggesting a de-coupling of the accretion disk to any radio emission.…”

Section: No Detected Jet -'Radio Quiet State/short Flares'mentioning

confidence: 52%

A decade of high-resolution radio observations of GRS 1915+105

Rushton,

Spencer,

Pooley

et al. 2009

Preprint

Self Cite

View full text Add to dashboard Cite

The radio emitting X-ray binary GRS 1915+105 shows a wide variety of X-ray and radio states. We present a decade of monitoring observations, with the RXTE-ASM and the Ryle Telescope, in conjunction with high-resolution radio observations using MERLIN and the VLBA. Linear polarisation at 1.4 and 1.6 GHz has been spatially resolved in the radio jets, on a scale of ∼ 150 mas and at flux densities of a few mJy. Depolarisation of the core occurs during radio flaring, associated with the ejection of relativistic knots of emission. We have identified the ejection at four epochs of X-ray flaring. Assuming no deceleration, proper motions of 16.5 to 27 mas per day have been observed, supporting the hypothesis of a varying angle to the line-of-sight per ejection, perhaps in a precessing jet.

show abstract

Section: No Detected Jet -'Radio Quiet State/short Flares'mentioning

confidence: 52%

A decade of high-resolution radio observations of GRS 1915+105

Rushton,

Spencer,

Pooley

et al. 2009

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Due to selection effects that limit most observations to periods of strong radio emission, only a few high‐resolution observations have been taken in this state. European VLBI Network (e‐EVN) observations taken in this state during 2006 April (Rushton et al 2007) showed no evidence for any compact jet, unlike the jet observed by Fuchs et al (2003), suggesting no outflow of material. Likewise, MERLIN observations taken in 1999 showed no large‐scale structure, despite X‐rays flares, suggesting a de‐coupling of the accretion disc to any radio emission.…”

Section: Discussionmentioning

confidence: 82%

“…X-ray observations with the ASM instrument onboard the RXTE satellite and 15-GHz radio monitoring with the Ryle Telescope in1999, 2003-2007 (no RT data were available in 2006-2007. The dotted lines denote the MERLIN 18-cm epochs, showing that the source was in different X-ray 'states' during the observations.…”

mentioning

confidence: 99%

A decade of high-resolution radio observations of GRS 1915+105

Rushton

Spencer

Pooley

et al. 2010

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

The radio emitting X‐ray binary GRS 1915+105 shows a wide variety of X‐ray and radio states. We present a decade of monitoring observations, with the Rossi X‐ray Timing Explorer–All Sky Monitor and the Ryle Telescope, in conjunction with high‐resolution radio observations using Multi‐Element Radio‐Linked Interferometer Network and the The Very Long Baseline Array. Linear polarization at 1.4 and 1.6 GHz has been spatially resolved in the radio jets, on a scale of ∼150 mas and at flux densities of a few mJy. Depolarization of the core occurs during radio flaring, associated with the ejection of relativistic knots of emission. We have identified the ejection at four epochs of X‐ray flaring. Assuming no deceleration, proper motions of 16.5 to 27 mas per day have been observed, supporting the hypothesis of a varying angle to the line of sight per ejection, perhaps in a precessing jet.

show abstract

“…the correlator). This technique is under continuous development and has been successfully used for the study of transient phenomena (Rushton et al 2007; Tudose et al 2007).…”

Section: Observations and Analysismentioning

confidence: 99%

Probing the behaviour of the X-ray binary Cygnus X-3 with very long baseline radio interferometry

Tudose

Miller-Jones

Fender

et al. 2010

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

In order to test the recently proposed classification of the radio/X‐ray states of the X‐ray binary Cygnus X‐3 (Cyg X‐3), we present an analysis of the radio data available for the system at much higher spatial resolutions than used for defining the states. The radio data set consists of archival Very Long Baseline Array data at 5 or 15 GHz and new electronic European Very Long Baseline Interferometry Network data at 5 GHz. We also present 5‐GHz Multi‐Element Radio Linked Interferometer Network observations of an outburst of Cyg X‐3. In the X‐ray regime, we use quasi‐simultaneous with radio, monitoring and pointed Rossi X‐ray Timing Explorer observations. We find that when the radio emission from both jet and core is globally considered, the behaviour of Cyg X‐3 at mas scales is consistent with that described at arcsec‐scales. However, when the radio emission is disentangled in a core component and a jet component, the situation changes. It becomes clear that in active states the radio emission from the jet is dominating that from the core. This shows that in these states the overall radio flux cannot be used as a direct tracer of the accretion state.

show abstract

First e-VLBI observations of GRS 1915+105

Cited by 13 publications

References 11 publications

A decade of high-resolution radio observations of GRS 1915+105

A decade of high-resolution radio observations of GRS 1915+105

A decade of high-resolution radio observations of GRS 1915+105

Probing the behaviour of the X-ray binary Cygnus X-3 with very long baseline radio interferometry

Contact Info

Product

Resources

About