High-resolution imaging of the M87 core

Details High-resolution imaging of the M87 core High-resolution imaging of the M87 core

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326..681b&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, April 16, 1987, p. 681-683.

Astronomy and Astrophysics

Astronomy

8

Astronomical Photography, Elliptical Galaxies, Galactic Nuclei, Black Holes (Astronomy), Data Reduction, High Resolution, Pixels, Stars

Scientific paper

The authors have recorded alternately a number of short-exposure images of the M87 core and several comparison stars with an ISIT camera at the AMOS 1.6-m telescope at Haleakala, Maui. An analysis of selected images (0.54 - 0.60 arc s FWHM) indicates that there is no significant difference between the apparent widths of the M87 core and the stars. The true core width appears to be definitely <0.3 arc s and probably <0.20 arc s. Thus, one does not observe a hypothetical stellar cusp created by the potential of a massive black hole.

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