198 citations · 422 across the 6 of their papers we have counts for
6 papers
Detection of an optical/UV jet/counterjet and Multiple Spectral Components in M84
Eileen T. Meyer, Maria Petropoulou, Markos Georganopoulos +3
We report an optical/UV jet and counterjet in M84, previously unreported in archival HST imaging. With archival VLA, ALMA, and Chandra imaging, we examine the first well-sampled sp…
Optical Polarization and Spectral Variability in the M87 Jet
Eric S. Perlman, Steven C. Adams, Mihai Cara +10
During the last decade, M87's jet has been the site of an extraordinary variability event, with one knot (HST-1) increasing by over a factor 100 in brightness. Variability was also…
Fermi Large Area Telescope Gamma-Ray Detection of the Radio Galaxy M87
The Fermi LAT Collaboration, A. A. Abdo, D. E. Harris +2
We report the Fermi-LAT discovery of high-energy (MeV/GeV) gamma-ray emission positionally consistent with the center of the radio galaxy M87, at a source significance of over 10 s…
HST observations of the quasar PKS 0637-752: equipartition electron-proton jet from the most complete spectral coverage to date
Kushal T. Mehta, Markos Georganopoulos, Eric S. Perlman +2
We present new NICMOS and ACS observations of the quasar jet PKS 0637-752, and we use them, together with existing multiwavelength observations, to produce the most complete spectr…
Relativistic and slowing down: the flow in the hotspots of powerful radio galaxies and quasars
Markos Georganopoulos, Demosthenes Kazanas
Pairs of radio emitting jets with lengths up to several hundred kiloparsecs emanate from the central region (the `core') of radio loud active galaxies. In the most powerful of them…
Blue Quasars and Blazar Unification Schemes
Markos Georganopoulos
Blue quasars (BQs) are sources with strong broad emission lines and flat hard X-ray spectra, properties that resemble classical flat spectrum radio quasars (FSRQs), and high peak f…