Deep VLA images of globular clusters

Details Deep VLA images of globular clusters Deep VLA images of globular clusters

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...382l..89j&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 382, Dec. 1, 1991, p. L89-L92. Research supported by Dudley Obser

Astronomy and Astrophysics

Astrophysics

29

Globular Clusters, Pulsars, Very Large Array (Vla), Heao 2, Image Resolution, Neutron Stars, Planetary Nebulae, X Ray Binaries

Scientific paper

Sensitive high-resolution images of four globular clusters made with the VLA at 1.4 GHz are presented. A variety of objects - known pulsars, an X-ray binary, and two planetary nebulae - is presented. Surprisingly, No emission from the rich cluster Liller 1 is detected. If Liller 1 is truly one of the densest clusters in the Galaxy, then these results suggest that the pulsar population in a cluster is a function not merely of the structural parameters. The detection of seven unidentified sources in or near the cores of three clusters are reported. Some of these may well be unrelated background sources, but it is probable that some may be associated with the low-luminosity X-ray sources identified by the Einstein satellite.

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