Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...441l..73d&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 441, no. 2, p. L73-L76
Astronomy and Astrophysics
Astronomy
46
Emission Spectra, H Ii Regions, Radio Astronomy, Radio Bursts, Stellar Envelopes, Supermassive Stars, Contours, Data Reduction, Flux Density, Radio Spectra, Spectrum Analysis
Scientific paper
On five occasions between 1992 June 29 and 1994 May 3, we have used the Australia Telescope Compact Array (ATCA) to image Eta Carinae at a wavelength of 3 cm and a resolution of 1 arcsec. These observations have revealed remarkable activity. Since 1992 June, the total flux density has increase from 0.8 to 2.2 Jy, and the original single compact source has grown to a complex of sources spread over an area of about 16 sq arcsec. Strong hydrogen recombination-line spectral emission has appeared at the site of the strongest of these new sources. This recombination emission has the largest spectral width ever observed from a star, +/- 250 km/s, and reveals gas with turbulent velocities as great as 250 km/s approaching us at an average velocity of about 200 km/s. We believe that this radio outburst has been caused by a more than threefold increase of ultraviolet luminosity, and consequent ionization of previously neutral gas clouds.
Drake Stephen Alan
Duncan Roy A.
Kundu Mukul R.
Lim JaeDeok
Nelson Graam J.
No associations
LandOfFree
Intense radio outburst from the supermassive star Eta Carinae 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 Intense radio outburst from the supermassive star Eta Carinae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intense radio outburst from the supermassive star Eta Carinae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-884886