7.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Institute for AstrophysicsIT1.2k papers
- University of BolognaIT1.1k papers
- Centre National de la Recherche ScientifiqueFR830 papers
- Leiden UniversityNL562 papers
- University of PaduaIT461 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR449 papers
- Astrophysique, Instrumentation et ModélisationFR424 papers
- Center for Astrophysics Harvard & SmithsonianUS420 papers
- Netherlands Institute for Radio AstronomyNL418 papers
- Osservatorio Astronomico di PadovaIT411 papers
- Osservatorio astronomico di BolognaIT398 papers
- California Institute of TechnologyUS397 papers
31 papers · 2 filters
Blazar spectral variability as explained by a twisting inhomogeneous jet
C. M. Raiteri, M. Villata
Blazar emission is dominated by non-thermal radiation from a relativistic jet pointing toward us, therefore undergoing Doppler beaming. This is responsible for flux enhancement and…
Jet physics of accreting super-massive black holes in the era of the Fermi Gamma-ray Space Telescope
Filippo D'Ammando
The Fermi Gamma-ray Space Telescope with its main instrument on-board, the Large Area Telescope (LAT), opened a new era in the study of high-energy emission from Active Galactic Nu…
The high brightness temperature of B0529+483 revealed by RadioAstron and implications for interstellar scattering
S. V. Pilipenko, Y. Y. Kovalev, A. S. Andrianov +22
The high brightness temperatures, K, detected in several active galactic nuclei by RadioAstron space VLBI observations challenge theoretical limits. R…
Interplanetary Scintillation studies with the Murchison Wide-field Array II: Properties of sub-arcsecond compact sources at low radio frequencies
R. Chhetri, J. Morgan, R. D. Ekers +5
We report the first astrophysical application of the technique of wide-field Interplanetary Scintillation (IPS) with the Murchison Widefield Array (MWA). This powerful technique al…
Gentle re-energisation of electrons in merging galaxy clusters
F. de Gasperin, H. T. Intema, T. W. Shimwell +6
Galaxy clusters are the most massive constituents of the large-scale structure of the Universe. While the hot thermal gas that pervades galaxy clusters is relatively well understoo…
The X-ray counterpart to the gravitational wave event GW 170817
E. Troja, L. Piro, H. van Eerten +31
A long-standing paradigm in astrophysics is that collisions- or mergers- of two neutron stars (NSs) form highly relativistic and collimated outflows (jets) powering gamma-ray burst…
TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources
C. Müller, M. Kadler, R. Ojha +31
TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of -30deg declination including high-resolution Very Long Baseline Interferometry (VLBI) imaging,…
Enhanced Polarized Emission from the One-Parsec-Scale Hotspot of 3C 84 as a Result of the Interaction with Clumpy Ambient Medium
H. Nagai, Y. Fujita, M. Nakamura +4
We present Very Long Baseline Array polarimetric observations of the innermost jet of 3C84 (NGC1275) at 43GHz. A significant polarized emission is detected at the…
Dissecting the long-term emission behaviour of the BL Lac object Mrk 421
M. I. Carnerero, C. M. Raiteri, M. Villata +4
We report on long-term multi-wavelength monitoring of blazar Mrk 421 by the GASP-WEBT collaboration and Steward Observatory, and by the Swift and Fermi satellites. We study the sou…
Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
A. Goyal, L. Stawarz, S. Zola +109
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy -rays, {\it Swift}-XRT in X-rays…
Cross section of curvature radiation absorption
Nicola Locatelli, Gabriele Ghisellini
When treating the absorption of light, one focuses on the absorption coefficient, related to the probability of photons to survive while traversing a layer of material. From the po…
Exploring the connection between radio and GeV-TeV gamma-ray emission in the 1FHL and 2FHL AGN samples
R. Lico, M. Giroletti, M. Orienti +4
The Fermi Large Area Telescope (LAT) revealed that blazars, representing the most extreme radio-loud active galactic nuclei (AGN) population, dominate the census of the gamma-ray s…
The first detection of a pulsar with ALMA
Roberto P. Mignani, Rosita Paladino, Bronek Rudak +8
Pulsars are neutron stars, stellar corpses left over after supernova explosions of stars about ten times as massive as our Sun, with densities comparable to the atomic nucleus', sp…
Single-dish and VLBI observations of Cygnus X-3 during the 2016 giant flare episode
E. Egron, A. Pellizzoni, M. Giroletti +34
In September 2016, the microquasar Cygnus X-3 underwent a giant radio flare, which was monitored for 6 days with the Medicina Radio Astronomical Station and the Sardinia Radio Tele…
Relativistic protons in the Coma galaxy cluster: first gamma-ray constraints ever on turbulent reacceleration
G. Brunetti, S. Zimmer, F. Zandanel
The Fermi-LAT collaboration recently published deep upper limits to the gamma-ray emission of the Coma cluster, a cluster that hosts the prototype of giant radio halos. In this pap…
Shocks and cold fronts in merging and massive galaxy clusters: new detections with Chandra
A. Botteon, F. Gastaldello, G. Brunetti
A number of merging galaxy clusters shows the presence of shocks and cold fronts, i.e. sharp discontinuities in surface brightness and temperature. The observation of these feature…
Fermi observations of the LIGO event GW170104
Melissa Pesce-Rollins, Nicola Omodei, Dan Kocevski +3
We present the \emph{Fermi} Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger (BBH) event GW170104. No candidate electr…
Imaging of SNR IC443 and W44 with the Sardinia Radio Telescope at 1.5 GHz and 7 GHz
E. Egron, A. Pellizzoni, M. N. Iacolina +33
Observations of supernova remnants (SNRs) are a powerful tool for investigating the later stages of stellar evolution, the properties of the ambient interstellar medium, and the ph…
ALMA polarization observations of the particle accelerators in the hot spot of the radio galaxy 3C 445
M. Orienti, G. Brunetti, H. Nagai +3
We present Atacama Large Millimeter Array (ALMA) polarization observations at 97.5 GHz of the southern hot spot of the radio galaxy 3C 445. The hot spot structure is dominated by t…
On the connection between turbulent motions and particle acceleration in galaxy clusters
D. Eckert, M. Gaspari, F. Vazza +5
Giant radio halos are Mpc-scale diffuse radio sources associated with the central regions of galaxy clusters. The most promising scenario to explain the origin of these sources is…
Cosmic-ray electron+positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope
LAT Collaboration, S. Abdollahi, M. Ackermann +97
We present a measurement of the cosmic-ray electron+positron spectrum between 7 GeV and 2 TeV performed with almost seven years of data collected with the Fermi Large Area Telescop…
Prospects for CTA observations of the young SNR RX J1713.7-3946
The CTA Consortium, :, F. Acero +381
We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX~J1713.73946, a young supernova remnant (SNR) and one of the brightest sources ever discovere…
Interpreting the time variable RM observed in the core region of the TeV blazar Mrk 421
R. Lico, J. L. Gómez, K. Asada +1
In this work we interpret and discuss the time variable rotation measure (RM) found, for the first time over a 1-yr period, in the core region of a blazar. These results are based…
The Fermi Galactic Center GeV Excess and Implications for Dark Matter
LAT Collaboration
The region around the Galactic center (GC) is now well established to be brighter at energies of a few GeV than expected from conventional models of diffuse gamma-ray emission and…