Hostname: page-component-cc8bf7c57-qfg88 Total loading time: 0 Render date: 2024-12-12T01:50:26.633Z Has data issue: false hasContentIssue false
  • English
  • Français

Microvariability of S5 0716+714, a γ-Ray Blazar

Published online by Cambridge University Press:  25 May 2016

R. Nesci ,
E. Massaro ,
M. Maesano ,
F. Montagni ,
F. D'Alessio ,
G. Tosti  and
M. Luciani
R. Nesci
Affiliation:
Istituto Astronomico, Universita' “La Sapienza”, Roma, ITALY
E. Massaro
Affiliation:
Istituto Astronomico, Universita' “La Sapienza”, Roma, ITALY
M. Maesano
Affiliation:
Istituto Astronomico, Universita' “La Sapienza”, Roma, ITALY
F. Montagni
Affiliation:
Istituto Astronomico, Universita' “La Sapienza”, Roma, ITALY
F. D'Alessio
Affiliation:
Osservatorio Astronomico Collurania, Teramo, ITALY
G. Tosti
Affiliation:
Osservatorio Astronomico, Universita' di Perugia, Perugia ITALY
M. Luciani
Affiliation:
Osservatorio Astronomico, Universita' di Perugia, Perugia ITALY

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Like many radio-selected blazars, 0716+714 shows a high level of variability on different time scales, as short as a few days (e.g. Wagner et al 1996, Ghisellini et al. 1997). The mechanism of the emission in the optical band, in the general scheme of a relativistic plasma jet highy collimated toward the observer, is generally believed to be synchrotron radiation from electrons in a strong magnetic field. Our monitoring of S5 0716+714 is aimed to clarify whether the flux variations are chromatic or achromatic. In the first case, one could guess that variations in the spectrum of the injected electrons are responsible for the flux variations; in the second case, geometrical effects like small changes in the angle between the jet and the line of sight could be more likely (Wagner et al. 1993).

Type
Session 3: Diagnostics of High Gravity Objects with X- and Gamma Rays
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 442 - 443
Copyright
Copyright © Kluwer 1998 

References

Ghisellini, G., Villata, M., Raiteri, C.M., et al. 1997, A&A in press.Google Scholar
Johnson, H.L., Mitchell, R.I., 1975, Re. Mexicana Astron. Astrophys. 1, 299 Google Scholar
Wagner, S.J., Witzel, A., Krichbaum, T.P., et al. 1993, A&A 271, 344.Google Scholar
Wagner, S.J., Witzel, A., Heidt, J., et al., 1996, AJ, 111, 2187 Google Scholar