2.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT497 papers
- National Institute for AstrophysicsIT152 papers
- Astronomical Observatory of CapodimonteIT83 papers
- Centro Brasileiro de Pesquisas FísicasBR81 papers
- University of FerraraIT75 papers
- Astronomical Observatory of RomeIT65 papers
- Institute for Space Astrophysics and PlanetologyIT64 papers
- European Southern ObservatoryCL62 papers
- International Center for Relativistic Astrophysics NetworkAM60 papers
- Brera Astronomical ObservatoryIT58 papers
- Osservatorio Astronomico di PadovaIT57 papers
- Centre National de la Recherche ScientifiqueFR52 papers
52 papers · 1 filter
The partial asteroidal occultation of Betelgeuse on Jan 2, 2012
Costantino Sigismondi
The asteroid (147857) 2005 UW381 will pass over the supergiant star Betelgeuse on January 2nd 2012. The event is visible on a limited geographical region, and the magnitude drop is…
A Multi-Component Analysis Indicates a Positronic Major Flare in GRS 1915+105
Brian Punsly
A modeling strategy that is adapted to the study of synchrotron-self absorbed plasmoids that was developed for the quasar, Mrk 231, in Reynolds et al (2009) is applied to the micro…
The X-ray light curve of Gamma-ray bursts: clues to the central engine
M. G. Bernardini, R. Margutti, J. Mao +2
We present the analysis of a large sample of gamma-ray burst (GRB) X-ray light curves in the rest frame to characterise their intrinsic properties in the context of different theor…
Cooling of young neutron stars in GRB associated to Supernova
Rodrigo Negreiros, Remo Ruffini, Carlo Luciano Bianco +1
Recent observations of the late (-- s) emission of supernovae (SNe) associated to GRBs (GRB-SN) show a distinctive emission in the X-ray regime consistent with temper…
On the relativistic precession and oscillation frequencies of test particles around rapidly rotating compact stars
Leonardo A. Pachon, Jorge A. Rueda, Cesar A. Valenzuela-Toledo
Whether analytic exact vacuum(electrovacuum) solutions of the Einstein(Einstein-Maxwell) field equations can accurately describe or not the exterior spacetime of compact stars rema…
The phase and critical point of quantum Einstein-Cartan gravity
She-Sheng Xue
By introducing diffeomorphism and local Lorentz gauge invariant holonomy fields, we study in the recent article [S.-S. Xue, Phys. Rev. D82 (2010) 064039] the quantum Einstein-Carta…
A note on superluminal neutrinos and deformed special relativity
Yi Ling
In this short note we remark that the OPERA measurement could be reconciled with information from SN1987a in the context of deformed special relativity without the loss of energy t…
The luminosity evolution over the EQuiTemporal Surfaces in the prompt emission of Gamma-Ray Bursts
Carlo Luciano Bianco, Francesco Alessandro Massucci, Remo Ruffini
Due to the ultrarelativistic velocity of the expanding "fireshell" (Lorentz gamma factor γ\sim 10^2 - 10^3), photons emitted at the same time from the fireshell surface do not reac…
The Highly Energetic Expansion of SN2010bh Associated with GRB 100316D
Filomena Bufano, Elena Pian, Jesper Sollerman +50
We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed type Ic supernova, SN 2010bh, associated with the soft, long-duration g…
A proposal for the origin of the anomalous magnetic moment
M. Novello, E. Bittencourt
We investigate a new form of contribution for the anomalous magnetic moment of all particles. This common origin is displayed in the framework of a recent treatment of electrodynam…
Electromagnetic priors for black hole spindown in searches for gravitational-waves from supernovae and long GRBs
Maurice H. P. M. van Putten, Massimo Della Valle, Amir Levinson
Some core-collapse supernovae appear to be hyper-energetic, and a subset of these are aspherical and associated with long GRBs. We use observations of electromagnetic emission from…
Do high-energy neutrinos travel faster than photons in a discrete space-time?
She-Sheng Xue
The recent OPERA measurement of high-energy neutrino velocity, once independently verified, implies new physics in the neutrino sector. We revisit the theoretical inconsistency of…
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…
Electron and positron pair production of compact stars
Wen-Biao Han, Remo Ruffini, She-Sheng Xue
Neutral stellar core at or over nuclear densities is described by a positive charged baryon core and negative charged electron fluid since they possess different masses and interac…
Theory of photospheric emission from relativistic outflows
R. Ruffini, I. A. Siutsou, G. V. Vereshchagin
In this paper we reexamine the optical depth of ultrarelativistic spherically symmetric outflows and reevaluate the photospheric radius for each model during both the acceleration…
Evidence on the Origin of Ergospheric Disk Field Line Topology in Simulations of Black Hole Accretion
Brian Punsly
This Letter investigates the origin of the asymmetric magnetic field line geometry in the ergospheric disk (and the corresponding asymmetric powerful jet) in 3-D perfect magnetohyd…
The Measurement of Solar Diameter and Limb Darkening Function with the Eclipse Observations
Andrea Raponi, Costantino Sigismondi, Konrad Guhl +2
The Total Solar Irradiance varies over a solar cycle of 11 years and maybe over cycles with longer period. Is the solar diameter variable over time too? We introduce a new method t…
No quantum gravity signature from the farthest quasars
Fabrizio Tamburini, Carmine Cuofano, Massimo Della Valle +1
Context: Strings and other alternative theories describing the quantum properties of space-time suggest that space-time could present a foamy structure and also that, in certain ca…
SDSS DR7 superclusters. Principal component analysis
M. Einasto, L. J. Liivamagi, E. Saar +4
We apply the principal component analysis and Spearman's correlation test to study the properties of superclusters drawn from the SDSS DR7. We analyse possible selection effects in…
Constructing EOB dynamics with numerical energy flux for intermediate-mass-ratio inspirals
Wen-Biao Han, Zhoujian Cao
A new scheme for computing dynamical evolutions and gravitational radiations for intermediate-mass-ratio inspirals (IMRIs) based on an effective one-body (EOB) dynamics plus Teukol…
The Purely Geometric Part of "Dark Matter" -- A Fresh Playground for "String Theory"
Hagen Kleinert
We argue that part of "dark matter" is not made of matter, but of the singular world-surfaces in the solutions of Einstein's vacuum field equation G_{μν}=0. Their Einstein-Hilbert…
Fundamental physics from black holes, neutron stars and gamma-ray bursts
Remo Ruffini
Gamma-ray bursts (GRBs) and supernovae (SNe) bring new perspectives to the study of neutron stars and white dwarfs, as well as opening new branches of theoretical physics and astro…
Five Supernova Survey Galaxies in the Southern Hemisphere: Supernova Ia Rates
A. A. Hakobyan, A. R. Petrosian, G. A. Mamon +9
Based on the database of 56 supernovae (SNe) events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of SNe of different types along the Hubble sequence…
Electron-positron pairs production in a macroscopic charged core
Remo Ruffini, She-Sheng Xue
Classical and semi-classical energy states of relativistic electrons bounded by a massive and charged core with the charge-mass-radio Q/M and macroscopic radius R_c are discussed.…