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Relativistic motion in a nearby bright X-ray source
Citation
Tingay, SJ and Jauncey, DL and Preston, RA and Reynolds, JE and Meier, DL and Murphy, DW and Tzioumis, AK and McKay, DJ and Kesteven, MJ and Lovell, JEJ and Campbell-Wilson, D and Ellingsen, SP and Gough, R and Hunstead, RW and Jones, DL and McCulloch, PM and Migenes, V and Quick, J and Sinclair, MW and Smits, D, Relativistic motion in a nearby bright X-ray source, Nature, 374, (6518) pp. 141-143. ISSN 0028-0836 (1995) [Refereed Article]
Copyright Statement
Copyright 1994 Nature Publishing Group
DOI: doi:10.1038/374141a0
Abstract
The recent discovery of radio components apparently moving away from a Galactic source of transient X-ray emission faster than the speed of light (superluminal motion) has identified a low-energy Galactic counterpart to quasars. Here we report high-resolution radio observations of a second Galactic superluminal radio source GRO J1655-40, which was detected as an X-ray transient on 27 July 1994. Our radio images reveal two components moving away from each other at an angular speed of 65 ± 5 mas d-1, corresponding to superluminal motion at the estimated distance of 3–5 kpc. The 12-day delay between the X-ray and radio outbursts suggests that the ejection of material at relativistic speeds occurs during a stable phase of accretion onto a black hole, which follows an unstable phase with a high accretion rate.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Physical Sciences |
| Research Group: | Astronomical sciences |
| Research Field: | Galactic astronomy |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the physical sciences |
| UTAS Author: | Lovell, JEJ (Dr Jim Lovell) |
| UTAS Author: | Ellingsen, SP (Professor Simon Ellingsen) |
| UTAS Author: | McCulloch, PM (Professor Peter McCulloch) |
| ID Code: | 7384 |
| Year Published: | 1995 |
| Web of Science® Times Cited: | 266 |
| Deposited By: | Physics |
| Deposited On: | 1995-08-01 |
| Last Modified: | 2021-05-13 |
| Downloads: | 0 |
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