Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-10-22
Astronomy and Astrophysics
Astrophysics
8 pages, LaTeX2e with AASTeX 4.0, 3 figures; to be published in ApJ
Scientific paper
10.1086/312406
We report a search for radio continuum emission from the gamma-ray pulsar Geminga. We have used the VLA to image the location of the optical counterpart of Geminga at 74 and 326 MHz. We detect no radio counterpart. We derive upper limits to the pulse-averaged flux density of Geminga, taking diffractive scintillation into account. We find that diffractive scintillation is probably quenched at 74 MHz and does not influence our upper limit, S < 56 mJy (2\sigma), but that a 95% confidence level at 326 MHz is S < 5 mJy. Owing to uncertainties on the other low-frequency detections and the possibility of intrinsic variability or extrinsic variability (refractive interstellar scintillation) or both, our non-detections are nominally consistent with these previous detections.
Kassim Namir E.
Lazio Joseph T. W.
No associations
LandOfFree
Upper Limits on the Continuum Emission from Geminga at 74 and 326 MHz 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 Upper Limits on the Continuum Emission from Geminga at 74 and 326 MHz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Upper Limits on the Continuum Emission from Geminga at 74 and 326 MHz will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-426764