We present the historic photographic light curves of three little known blazars ( two BL Lac objects and one FSRQ), GB6 J1058+5628, GB6 J1148+5254, and GB6 J1209+4119, spanning a time interval of about 50 years, mostly built using the Asiago plate archive. All objects show evident long-term variability, over which short-term variations are superposed. One source, GB6 J1058+5628, showed a marked quasi-periodic variability of 1 mag on timescale of about 6.3 years, making it one of the few BL Lac objects with a quasi-periodic behavior.

GB6 J1058+5628: A NEW QUASI-PERIODIC BL LAC OBJECT FROM THE ASIAGO PLATE ARCHIVE / Nesci, Roberto. - In: THE ASTRONOMICAL JOURNAL. - ISSN 0004-6256. - STAMPA. - 139:6(2010), pp. 2425-2432. [10.1088/0004-6256/139/6/2425]

GB6 J1058+5628: A NEW QUASI-PERIODIC BL LAC OBJECT FROM THE ASIAGO PLATE ARCHIVE

NESCI, Roberto
2010

Abstract

We present the historic photographic light curves of three little known blazars ( two BL Lac objects and one FSRQ), GB6 J1058+5628, GB6 J1148+5254, and GB6 J1209+4119, spanning a time interval of about 50 years, mostly built using the Asiago plate archive. All objects show evident long-term variability, over which short-term variations are superposed. One source, GB6 J1058+5628, showed a marked quasi-periodic variability of 1 mag on timescale of about 6.3 years, making it one of the few BL Lac objects with a quasi-periodic behavior.
2010
bl lacertae objects: individual (gb6 j1058+5628; gb6 j1148+5254; gb6 j1209+4119); galaxies: active
01 Pubblicazione su rivista::01a Articolo in rivista
GB6 J1058+5628: A NEW QUASI-PERIODIC BL LAC OBJECT FROM THE ASIAGO PLATE ARCHIVE / Nesci, Roberto. - In: THE ASTRONOMICAL JOURNAL. - ISSN 0004-6256. - STAMPA. - 139:6(2010), pp. 2425-2432. [10.1088/0004-6256/139/6/2425]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/17537
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