Abstract
view Abstract Citations (78) References (62) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS H0323+022: A New BL Lacertae Object with Extremely Rapid Variability Feigelson, E. D. ; Bradt, H. ; McClintock, J. ; Remillard, R. ; Urry, C. M. ; Tapia, S. ; Geldzahler, B. ; Johnston, K. ; Romanishin, W. ; Wehinger, P. A. ; Wyckoff, S. ; Madejski, G. ; Schwartz, D. A. ; Thorstensen, J. ; Schaefer, B. E. Abstract H0323+022 is a highly variable X-ray source discovered in the HEAO 1 all-sky survey coincident with a 16th mag stellar object. Optical nebulosity around the object strongly suggests that it is a BL Lac object. This paper presents the results of a multiband, multiepoch series of observations that demonstrate beyond reasonable doubt that H0323+022 is a remarkably variable BL Lac object. The optical nebulosity around the stellar object is confirmed, the stellar optical radiation is polarized, and the radio characteristics and the overall electromagnetic spectrum resemble those of other BL Lac objects. Variability is seen in all bands, including radio and broad-band optical variations in days, optical polarization changes on time scales of tens of minutes, and X-ray changes on time scales of ≡30 s. H0323+022 is thus an active galactic nucleus with much of the observed emission emerging from a region ⪉1012 - 1014cm in size. Publication: The Astrophysical Journal Pub Date: March 1986 DOI: 10.1086/163993 Bibcode: 1986ApJ...302..337F Keywords: Bl Lacertae Objects; Radio Sources (Astronomy); X Ray Sources; Active Galactic Nuclei; Astronomical Photometry; Compton Effect; Optical Polarization; Synchrotron Radiation; Ubv Spectra; Astrophysics; BL LACERTAE OBJECTS; POLARIZATION; RADIATION MECHANISMS; RADIO SOURCES: VARIABLE; X-RAYS: SOURCES full text sources ADS | data products SIMBAD (8) NED (8)
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