Photometry of BL Lac objects and optically violently variable quasars

Details Photometry of BL Lac objects and optically violently variable quasars Photometry of BL Lac objects and optically violently variable quasars

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iraj...19...66s&link_type=abstract

(Astronomical Science Group of Ireland, Meeting, Dundalk Regional College, Republic of Ireland, Mar. 23, 1989) Irish Astronomica

Computer Science

Performance

Astronomical Photometry, Bl Lacertae Objects, Quasars, Active Galactic Nuclei, Charge Coupled Devices, Light Curve, Photometers

Scientific paper

A photon-counting photometer has been used to observe BL Lac objects and optically violently variable (OVV) quasars. The development, construction, and performance of the photometer are discussed and the photometer configuration is illustrated. The observations were made on five nights in September 1986 using a 1-m telescope. Results are presented for observations of seven OVV objects and the star Chi Persei. No statistically significant variation were detected in the sources on timescales ranging from 0.1 sec to 5 days.

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