A determination of the mass of Sagittarius A* from its radio spectral and source size measurements

Details A determination of the mass of Sagittarius A* from its radio spectral and source size measurements A determination of the mass of Sagittarius A* from its radio spectral and source size measurements

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...395l..87m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 395, no. 2, Aug. 20, 1992, p. L87-L90. Research supported by Alfr

Statistics

Computation

41

Accretion Disks, Black Holes (Astronomy), Galactic Nuclei, Radio Sources (Astronomy), Astronomical Spectroscopy, Computational Astrophysics, Milky Way Galaxy

Scientific paper

There is growing evidence that Sgr A* may be a million solar mass black hole accreting from the Galactic center wind. A consideration of the spectral and source size characteristics associated with this process can offer at least two distinct means of inferring the mass M, complementing the more traditional dynamical arguments. We show that M is unmistakably correlated with both the radio spectral index and the critical wavelength below which the intrinsic source size dominates over the angular broadening due to scattering in the interstellar medium. Current observations can already rule out a mass much in excess of 2 x 10 exp 6 solar masses and suggest a likely value close to 1 x 10 exp 6 solar masses, in agreement with an earlier study matching the radio and high-energy spectral components. We anticipate that such a mass may be confirmed with the next generation of source-size observations using milliarcsecond angular resolution at 0.5 - 1 cm wavelengths.

Affiliated with

Also associated with

No associations

Rating

A determination of the mass of Sagittarius A* from its radio spectral and source size measurements 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 A determination of the mass of Sagittarius A* from its radio spectral and source size measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A determination of the mass of Sagittarius A* from its radio spectral and source size measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1166121