Multiwavelength Study of the Globular Cluster M28 (NGC~6626)

Details Multiwavelength Study of the Globular Cluster M28 (NGC~6626) Multiwavelength Study of the Globular Cluster M28 (NGC~6626)

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..799b&link_type=abstract

Chandra Proposal ID #03300300

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Chandra Proposal Id #03300300

Scientific paper

We propose a 60 ks, ACIS-S observation of the globular cluster M28. This medium deep exposure will clarify the nature of the apparently extended X-ray emission at its core and establish the X-ray luminosity function of M28's constituents down to 10^31 erg/s. In addition, the exposure will provide an accurate, confusion-free spectrum of the millisecond pulsar PSR B1821-24 near the center of M28, and spectra of various other X-ray sources in the globular cluster we will detect. Furthermore, by referencing the Chandra-determined positions to the very accurate radio position of PSR B1821-24 and the X-ray bright star HD 315622, we shall determine the absolute positions of identified sources to better than 0.25arcsec, greatly facilitating identifications studies in the optical and radio band.

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