Low Frequency GMRT Observations of Microquasar V4641 Sgr

Details Low Frequency GMRT Observations of Microquasar V4641 Sgr Low Frequency GMRT Observations of Microquasar V4641 Sgr

2007-01-15

arxiv.org/abs/astro-ph/0701412v1

PoSMQW6:020,2006

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the proceedings of VI Microquasar Workshop: Microquasars and Beyond, Sept 18-22 2006, Como, Italy,

Scientific paper

We have observed the micro-quasar V4641 Sgr (SAX J1819.3-2525) at the time of flare during May 2002, using the Giant Metrewave Radio Telescope at low radio frequencies (244 and 610 MHz). This is the lowest frequency radio detection of the source. The source showed clear signature of spectral evolution from optically thick to thin state. We model the spectral evolution of the source to obtain some of the source parameters. Assuming the value of magnetic field strength to be in the range of 0.1 to 1 Gauss, we obtain the initial velocity of expansion of the jet to be in the range $\sim$ 0.45c to 0.25c. This is consistent with the known expansion velocities of the jet with other microquasars.

Affiliated with

Also associated with

No associations

Rating

Low Frequency GMRT Observations of Microquasar V4641 Sgr does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low Frequency GMRT Observations of Microquasar V4641 Sgr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low Frequency GMRT Observations of Microquasar V4641 Sgr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-584233