230 citations · 400 across the 11 of their papers we have counts for
7 papers · 1 filter
Erratum (astro-ph/0510172): Robust Limits on Lorentz Violation from Gamma-Ray Bursts
John Ellis, N. E. Mavromatos, D. V. Nanopoulos +2
We correct the fitting formula used in refs. [1,2] to obtain a robust limit on a violation of Lorentz invariance that depends linearly on the photon energy. The correction leads to…
Probing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope
J. Albert et al., John Ellis, N. E. Mavromatos +3
We analyze the timing of photons observed by the MAGIC telescope during a flare of the active galactic nucleus Mkn 501 for a possible correlation with energy, as suggested by some…
Primordial Structure of Massive Black Hole Clusters
Maxim. Yu. Khlopov, Sergei. G. Rubin, Alexander. S. Sakharov
We describe a mechanism of the primordial black holes formation that can explain the existence of a population of supermassive black holes in galactic bulges. The mechanism is base…
Development of the Universe and New Cosmology
A. S. Sakharov, H. Hofer
Cosmology is undergoing an explosive period of activity, fueled both by new, accurate astrophysical data and by innovative theoretical developments. Cosmological parameters such as…
Synchrotron Radiation and Quantum Gravity
John Ellis, N. E. Mavromatos, D. V. Nanopoulos +1
Photons may evade a synchrotron radiation constraint on quantum gravity by violating the equivalence principle.
Synchrotron Radiation from the Crab Nebula Discriminates between Models of Space-Time Foam
J. Ellis, N. E. Mavromatos, A. S. Sakharov
It has been argued by Jacobson, Liberati and Mattingly that synchrotron radiation from the Crab Nebula imposes a stringent constraint on any modification of the dispersion relation…