Fast infrared variability from a relativistic jet in GX 339--4
Casella, P., Maccarone, T. .J., O'Brien, K., Fender, R.P., Russell, D.M., van der Klis, M., Pe'er, A., Maitra, M., Altamirano, D., Belloni, T., Kanbach, G., Klien-Wolt, M., Mason, E., Soleri, P., Stefanescu, A., Wiersema, K. and Wijnands, R. (2009) Fast infrared variability from a relativistic jet in GX 339--4. Monthly Notices of the Royal Astronomical Society, 1-5.
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Description/Abstract
We present the discovery of fast infrared/X-ray correlated variability in the black-
hole transient GX 339-4. The source was observed with sub-second time resolution
simultaneously with VLT/ISAAC and RXTE/PCA in August 2008, during its persis-
tent low-
ux highly variable hard state. The data show a strong correlated variability,
with the infrared emission lagging the X-ray emission by 100 ms. The short time de-
lay and the nearly symmetric cross-correlation function, together with the measured
brightness temperature of 2:5 106 K, indicate that the bright and highly variable
infrared emission most likely comes from a jet near the black hole. Under standard
assumptions about jet physics, the measured time delay can provide us a lower limit
of
| Item Type: | Article |
|---|---|
| ISSNs: | 0035-8711 (print) |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy > Astronomy and Space Science |
| Item ID: | 69884 |
| Date Deposited: | 04 Jan 2010 |
| Last Modified: | 03 Jul 2012 15:16 |
| Contributors: | Casella, P. (Author) Maccarone, T. .J. (Author) O'Brien, K. (Author) Fender, R.P. (Author) Russell, D.M. (Author) van der Klis, M. (Author) Pe'er, A. (Author) Maitra, M. (Author) Altamirano, D. (Author) Belloni, T. (Author) Kanbach, G. (Author) Klien-Wolt, M. (Author) Mason, E. (Author) Soleri, P. (Author) Stefanescu, A. (Author) Wiersema, K. (Author) Wijnands, R. (Author) |
| Date: | 8 December 2009 |
| Status: | Published |
| Contact Email Address: | p.casella@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/69884 |
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