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Extremely high cm-band radio flux level of the gamma-ray flaring FSRQ PKS 1510-089

ATel #3775; M. Orienti (University of Bologna, INAF-IRA Bologna), F. D'Ammando (INAF-IRA Bologna), M. Giroletti (INAF-IRA Bologna), and A. Orlati (INAF-IRA Medicina) on behalf of the ESCS-Development-Team
on 21 Nov 2011; 10:21 UT
Credential Certification: Filippo D'Ammando (filippo.dammando@iasf-roma.inaf.it)

Subjects: Radio, AGN, Blazar, Quasar

Referred to by ATel #: 3799

The 32-m single dish antenna located at Medicina has been observing the flat spectrum radio quasar PKS 1510-089 starting from July 2011 with monthly frequency. The observations were organised as a follow-up of the gamma-ray flaring event reported in July 2011 by AGILE (ATel #3470) and Fermi (ATel #3473).

Recently, radio observations were performed at 4.9 GHz and 8.0 GHz on 2011 November 16. The observations have been carried out using the new Enhanced Single-dish Control System (ESCS; for details about ESCS please contact: Andrea Orlati 3698).

The observed flux density levels are 2.49+/-0.17 Jy at 4.9 GHz, and 3.72+/-0.22 Jy at 8.0 GHz. As a comparison, on 2011 October 13 the flux densities measured with the Medicina antenna were 1.53+/-0.05 Jy at 4.9 GHz, and 2.08+/-0.05 Jy at 8.0 GHz.

The increase of the radio flux density may be related to the high activity level recently observed in gamma rays. Further multifrequency observations are encouraged.