2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- A. Zezas3 profiles106 · h 46
- P. Reig2 profiles88 · h 30
- I. Papadakis2 profiles84 · h 43
- V. Charmandaris2 profiles76 · h 70
- V. Pavlidou2 profiles58 · h 50
- C. Soukoulis54 · h 111
- K. Tassis2 profiles52 · h 26
- E. Stratakis47 · h 63
- N. Kylafis2 profiles43 · h 34
- C. Galiotis39 · h 57
- D. Blinov3 profiles33 · h 41
- M. Kafesaki33 · h 54
- University of CreteGR1.1k papers
- California Institute of TechnologyUS231 papers
- Centre National de la Recherche ScientifiqueFR216 papers
- Center for Astrophysics Harvard & SmithsonianUS175 papers
- FORTH Institute of Electronic Structure and LaserGR151 papers
- Max Planck Institute for Radio AstronomyDE139 papers
- Observatoire de ParisFR102 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR94 papers
- Goddard Space Flight CenterUS93 papers
- Max Planck Institute for Extraterrestrial PhysicsDE89 papers
- Aalto UniversityFI84 papers
- Leiden UniversityNL82 papers
17 papers · 2 filters
Chandra X-ray Constraints on the Candidate Ca-rich Gap Transient SN 2016hnk
P. H. Sell, K. Arur, T. J. Maccarone +4
We present a Chandra observation of SN 2016hnk, a candidate Ca-rich gap transient. This observation was specifically designed to test whether or not this transient was the result o…
Scale invariant jets: from blazars to microquasars
I. Liodakis, V. Pavlidou, I. Papadakis +9
Black holes, anywhere in the stellar-mass to supermassive range, are often associated with relativistic jets. Models suggest that jet production may be a universal process common i…
Extragalactic Gamma-ray Background from Star-forming Galaxies: Will Empirical Scalings Suffice?
I. Komis, V. Pavlidou, A. Zezas
Despite the influx of unprecedented-quality data from the Fermi Gamma-Ray Space Telescope that have been collected over nine years of operation, the contribution of normal star-for…
On the high energy cut-off of accreting sources: is GR relevant?
Francesco Tamborra, Iossif Papadakis, Michal Dovčiak +1
The hard X-ray emission observed in accreting compact sources is believed to be produced by inverse Compton scattering of soft photons arising from the accretion disc by energetic…
RoboPol: Connection between optical polarization plane rotations and gamma-ray flares in blazars
D. Blinov, V. Pavlidou, I. Papadakis +21
We use results of our 3 year polarimetric monitoring program to investigate the previously suggested connection between rotations of the polarization plane in the optical emission…
The photon-index - time-lag correlation in black-hole X-ray binaries
Pablo Reig, Nikolaos D. Kylafis, Iossif E. Papadakis +1
We have performed a timing and spectral analysis of a set of black-hole binaries to study the correlation between the photon index and the time lag of the hard photons with respect…
dart_board: Binary Population Synthesis with Markov Chain Monte Carlo
Jeff J Andrews, Andreas Zezas, Tassos Fragos
By employing Monte Carlo random sampling, traditional binary population synthesis (BPS) offers a substantial improvement in efficiency over brute force, grid-based studies. Even so…
The nature of X-ray spectral variability in MCG-6-30-15
E. S. Kammoun, I. E. Papadakis
The flux-flux plot (FFP) method can provide model-independent clues regarding the X-ray variability of active galactic nuclei. To use it properly, the bin size of the light curves…
Optical EVPA rotations in blazars: testing a stochastic variability model with RoboPol data
S. Kiehlmann, D. Blinov, T. J. Pearson +1
We identify rotations of the polarization angle in a sample of blazars observed for three seasons with the RoboPol instrument. A simplistic stochastic variability model is tested a…
Complex UV/X-ray variability of 1H~0707-495
P. K. Pawar, G. C. Dewangan, I. E. Papadakis +3
We study the relationship between the UV and X-ray variability of the narrow-line Seyfert 1 galaxy 1H~0707-495. Using a year long {\it Swift} monitoring and four long {\it XMM-Newt…
Tracing the accretion history of supermassive Black Holes through X-ray variability: results from the Chandra Deep Field-South
M. Paolillo, I. Papadakis, W. N. Brandt +15
We study the X-ray variability properties of distant AGNs in the Chandra Deep Field-South region over 17 years, up to , and compare them with those predicted by models bas…
The energy distribution of electrons in radio jets
Alexandros Tsouros, Nikolaos D. Kylafis
Black-hole and neutron-star X-ray binaries exhibit compact radio jets, when they are in the so called quiescent, hard, or hard intermediate states. The radio spectrum in these stat…
Deep Chandra Survey of the Small Magellanic Cloud. II. Timing Analysis of X-ray Pulsars
JaeSub Hong, Vallia Antoniou, Andreas Zezas +5
We report the timing analysis results of X-ray pulsars from a recent deep Chandra survey of the Small Magellanic Cloud (SMC). We have analyzed a total exposure of 1.4 Ms from 31 ob…
Bimodal radio variability in OVRO-40m-monitored blazars
I. Liodakis, V. Pavlidou, T. Hovatta +4
Blazars are known to show periods of quiescence followed by outbursts visible throughout the electromagnetic spectrum. We present a novel maximum likelihood approach to capture thi…
The X-ray continuum time-lags and intrinsic coherence in AGN
A. Epitropakis, I. E. Papadakis
We present the results from a systematic analysis of the X-ray continuum (`hard') time-lags and intrinsic coherence between the and various energy bands in the…
Symmetric Achromatic Variability in Active Galaxies -- A Powerful New Gravitational Lensing Probe?
H. K. Vedantham, A. C. S. Readhead, T. Hovatta +11
We report the discovery of a rare new form of long-term radio variability in the light-curves of active galaxies (AG) --- Symmetric Achromatic Variability (SAV) --- a pair of oppos…
F-GAMMA: Variability Doppler factors of blazars from multiwavelength monitoring
I. Liodakis, N. Marchili, E. Angelakis +8
Recent population studies have shown that the variability Doppler factors can adequately describe blazars as a population. We use the flux density variations found within the exten…