2012/10/08 by I. Agudo, Agudo, Ivan, Alan P. Marscher +6
Computer Science · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Computational Physics and Python Applications #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Particle Detector Development and Performance #Radio Astronomy Observations and Technology
paper · pdf · doi:10.48550/arxiv.1210.2234
openalex publication_date 2012/10/08 · openalex created_date 2020/02/24 · openalex updated_date 2026/07/28
Relativistic jets in AGN in general, and in blazars in particular, are the\nmost energetic and among the most powerful astrophysical objects known so far.\nTheir relativistic nature provides them with the ability to emit profusely at\nall spectral ranges from radio wavelengths to gamma-rays, as well as to vary\nextremely at time scales from hours to years. Since the birth of gamma-ray\nastronomy, locating the origin of gamma-ray emission has been a fundamental\nproblem for the knowledge of the emission processes involved. Deep and densely\ntime sampled monitoring programs with the Fermi Gamma-ray Space Telescope and\nother facilities at most of the available spectral ranges (including millimeter\ninterferometric imaging and polarization measurements wherever possible) are\nstarting to shed light for the case of blazars. After a short review of the\nstatus of the problem, we summarize two of our latest results -obtained from\nthe comprehensive monitoring data compiled by the Boston University Blazar\nmonitoring program - that locate the GeV flaring emission of the BL Lac objects\nAO 0235+164 and OJ287 within the jets of these blazars, at >12 parsecs from the\ncentral AGN engine.\n