Other
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997natur.389..697m&link_type=abstract
Nature, Volume 389, Issue 6652, pp. 697-699 (1997).
Other
51
Scientific paper
Geminga was discovered as a strong γ-ray source in the constellation Gemini over two decades ago,, and was later detected at X-ray and optical wavelengths. X-ray pulsations with a period of 237ms established that it is a rotating neutron star. Although γ-ray pulses were subsequently discovered (once the period was known) in archived data, no evidence for radio emission (either continuum or pulsed) was found; in this respect, Geminga is different from every other neutron star with pulsed emission. Here we report the detection of pulsed 102.5-MHz radio emission from Geminga, with a period of 237ms. The flux density varies within the range 5-500mJy and the pulse width varies between 10 and 80ms. The small dispersion measure (2.9 +/- 0.5pccm-3) confirms Geminga's proximity to the Sun and establishes it as the weakest known radio pulsar. This observation poses a considerable challenge for pulsar emission models, which must now be able to explain the exceptional contrast between the strength of the γ-ray and radio emission from this object.
Malofeev Valerii M.
Malov O. I.
No associations
LandOfFree
Detection of Geminga as a radio pulsar 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 Detection of Geminga as a radio pulsar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of Geminga as a radio pulsar will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1156755