a Survey of Gravitationally Lensed Quasars

Details a Survey of Gravitationally Lensed Quasars a Survey of Gravitationally Lensed Quasars

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..299g&link_type=abstract

Chandra Proposal ID #01700069

Mathematics

Logic

Chandra Proposal Id #01700069

Scientific paper

Time delays between components of gravitationally lensed quasars provide a unique and potentially accurate determination of the cosmological quantities H_o and q_o. Quasars generally have stronger and more rapid variations in the X-ray band than at lower frequencies so that reliable time delay measurements should be achievable. High resolution X-ray images are needed both to resolve the quasar images and to study the mass distribution of the intervening lensing structure. This observation surveys promising candidates for later intensive monitoring to obtain time delay measurements.

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