Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510-089 in 2011
Abstract
In this paper, we investigate the radio and γ-ray variability of the flat spectrum radio quasar PKS 1510-089 in the time range between 2010 November and 2012 January. In this period the source showed an intense activity, with two major γ-ray flares detected in 2011 July and October. During the latter episode both the γ-ray and the radio flux density reached their historical peak. Multiwavelength analysis shows a rotation of about 380° of the optical polarization angle close in time with the rapid and strong γ-ray flare in 2011 July. An enhancement of the optical emission and an increase of the fractional polarization both in the optical and in radio bands are observed about three weeks later, close in time with another γ-ray outburst. On the other hand, after 2011 September a huge radio outburst has been detected, first in the millimetre regime followed with some time delay at centimetre down to decimetre wavelengths. This radio flare is characterized by a rising and a decaying stage, in agreement with the formation of a shock and its evolution, as a consequence of expansion and radiative cooling. Lastly, if the γ-ray flare observed in 2011 October is related to this radio outburst,more »
- Authors:
- more »
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- Fermi-LAT Collaboration
- OSTI Identifier:
- 1356604
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Volume: 428; Journal Issue: 3; Journal ID: ISSN 0035-8711
- Publisher:
- Royal Astronomical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; radiation mechanisms: non-thermal; galaxies quasars: individual: PKS 1510−089; radio continuum: general
Citation Formats
Orienti, M., Koyama, S., D'Ammando, F., Giroletti, M., Kino, M., Nagai, H., Venturi, T., Dallacasa, D., Giovannini, G., Angelakis, E., Fuhrmann, L., Hovatta, T., Max-Moerbeck, W., Schinzel, F. K., Akiyama, K., Hada, K., Honma, M., Niinuma, K., Gasparrini, D., Krichbaum, T. P., Nestoras, I., Readhead, A. C. S., Richards, J. L., Riquelme, D., Sievers, A., Ungerechts, H., and Zensus, J. A. Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510-089 in 2011. United States: N. p., 2012.
Web. doi:10.1093/mnras/sts201.
Orienti, M., Koyama, S., D'Ammando, F., Giroletti, M., Kino, M., Nagai, H., Venturi, T., Dallacasa, D., Giovannini, G., Angelakis, E., Fuhrmann, L., Hovatta, T., Max-Moerbeck, W., Schinzel, F. K., Akiyama, K., Hada, K., Honma, M., Niinuma, K., Gasparrini, D., Krichbaum, T. P., Nestoras, I., Readhead, A. C. S., Richards, J. L., Riquelme, D., Sievers, A., Ungerechts, H., & Zensus, J. A. Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510-089 in 2011. United States. https://doi.org/10.1093/mnras/sts201
Orienti, M., Koyama, S., D'Ammando, F., Giroletti, M., Kino, M., Nagai, H., Venturi, T., Dallacasa, D., Giovannini, G., Angelakis, E., Fuhrmann, L., Hovatta, T., Max-Moerbeck, W., Schinzel, F. K., Akiyama, K., Hada, K., Honma, M., Niinuma, K., Gasparrini, D., Krichbaum, T. P., Nestoras, I., Readhead, A. C. S., Richards, J. L., Riquelme, D., Sievers, A., Ungerechts, H., and Zensus, J. A. Fri .
"Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510-089 in 2011". United States. https://doi.org/10.1093/mnras/sts201. https://www.osti.gov/servlets/purl/1356604.
@article{osti_1356604,
title = {Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510-089 in 2011},
author = {Orienti, M. and Koyama, S. and D'Ammando, F. and Giroletti, M. and Kino, M. and Nagai, H. and Venturi, T. and Dallacasa, D. and Giovannini, G. and Angelakis, E. and Fuhrmann, L. and Hovatta, T. and Max-Moerbeck, W. and Schinzel, F. K. and Akiyama, K. and Hada, K. and Honma, M. and Niinuma, K. and Gasparrini, D. and Krichbaum, T. P. and Nestoras, I. and Readhead, A. C. S. and Richards, J. L. and Riquelme, D. and Sievers, A. and Ungerechts, H. and Zensus, J. A.},
abstractNote = {In this paper, we investigate the radio and γ-ray variability of the flat spectrum radio quasar PKS 1510-089 in the time range between 2010 November and 2012 January. In this period the source showed an intense activity, with two major γ-ray flares detected in 2011 July and October. During the latter episode both the γ-ray and the radio flux density reached their historical peak. Multiwavelength analysis shows a rotation of about 380° of the optical polarization angle close in time with the rapid and strong γ-ray flare in 2011 July. An enhancement of the optical emission and an increase of the fractional polarization both in the optical and in radio bands are observed about three weeks later, close in time with another γ-ray outburst. On the other hand, after 2011 September a huge radio outburst has been detected, first in the millimetre regime followed with some time delay at centimetre down to decimetre wavelengths. This radio flare is characterized by a rising and a decaying stage, in agreement with the formation of a shock and its evolution, as a consequence of expansion and radiative cooling. Lastly, if the γ-ray flare observed in 2011 October is related to this radio outburst, then this strongly indicates that the region responsible for the γ-ray variability is not within the broad line, but a few parsecs downstream along the jet.},
doi = {10.1093/mnras/sts201},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 428,
place = {United States},
year = {Fri Nov 09 00:00:00 EST 2012},
month = {Fri Nov 09 00:00:00 EST 2012}
}
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