18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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33 papers · 2 filters
Simultaneous H.E.S.S. and Chandra observations of Sagittarius A* during an X-ray flare
H. E. S. S. Collaboration, :, F. Aharonian
The rapidly varying (~10 minute timescale) non-thermal X-ray emission observed from Sgr A* implies that particle acceleration is occuring close to the event horizon of the supermas…
Very high energy gamma-ray observations of the galaxy clusters Abell 496 and Abell 85 with H.E.S.S
H. E. S. S. Collaboration, :, F. Aharonian
Aims: The nearby galaxy clusters Abell 496 and Abell 85 are studied in the very high energy (VHE, E > 100 GeV) band to investigate VHE cosmic rays (CRs) in this class of objects wh…
The energy spectrum of cosmic-ray electrons at TeV energies
H. E. S. S. Collaboration, :, F. Aharonian
The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon/satellite based instruments in the detection of very-high-energy…
Energy ejection in the collapse of a cold spherical self-gravitating cloud
M. Joyce, B. Marcos, F. Sylos Labini
When an open system of classical point particles interacting by Newtonian gravity collapses and relaxes violently, an arbitrary amount of energy may in principle be carried away by…
Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304
H. E. S. S. Collaboration, :, F. Aharonian
In the past few decades, several models have predicted an energy-dependence of the speed of light in the context of quantum gravity. For cosmological sources such as active galaxie…
Discovery of gamma-ray emission from the shell-type supernova remnant RCW 86 with H.E.S.S
HESS Collaboration, F. Aharonian
The shell-type supernova remnant (SNR) RCW 86, possibly associated with the historical supernova SN 185, with its relatively large size (about 40' in diameter) and the presence of…
Constraints on WIMP Dark Matter from the High Energy PAMELA data
F. Donato, D. Maurin, P. Brun +2
A new calculation of the ratio in cosmic rays is compared to the recent PAMELA data. The good match up to 100 GeV allows to set constraints on exotic contributions from…
Dark energy constraints and correlations with systematics from CFHTLS weak lensing, SNLS supernovae Ia and WMAP5
M. Kilbinger, K. Benabed, J. Guy +15
We combine measurements of weak gravitational lensing from the CFHTLS-Wide survey, supernovae Ia from CFHT SNLS and CMB anisotropies from WMAP5 to obtain joint constraints on cosmo…
PHotometry Assisted Spectral Extraction (PHASE) and identification of SNLS supernovae
S. Baumont, C. Balland, P. Astier +7
Aim: We present new extraction and identification techniques for supernova (SN) spectra developed within the Supernova Legacy Survey (SNLS) collaboration. Method: The new spectral…
A search for a dark matter annihilation signal towards the Canis Major overdensity with H.E.S.S
HESS Collaboration, F. Aharonian
A search for a dark matter (DM) annihilation signal into -rays toward the direction of the Canis Major (CMa) overdensity is presented. The nature of CMa is still controversial a…
H.E.S.S. Observations of the Prompt and Afterglow Phases of GRB 060602B
HESS Collaboration, F. Aharonian
We report on the first completely simultaneous observation of a gamma-ray burst (GRB) using an array of Imaging Atmospheric Cherenkov Telescopes which is sensitive to photons in th…
A Markov Chain Monte Carlo for Galactic Cosmic Ray physics: I. Method and results for the Leaky Box Model
A. Putze, L. Derome, D. Maurin +2
Propagation of charged cosmic-rays in the Galaxy depends on the transport parameters, whose number can be large depending on the propagation model under scrutiny. A standard approa…
Looking Beyond Lambda with the Union Supernova Compilation
D. Rubin, E. V. Linder, M. Kowalski +21
The recent robust and homogeneous analysis of the world's supernova distance-redshift data, together with cosmic microwave background and baryon acoustic oscillation data, provides…
Search for Gamma-rays from Dark Matter annihilations around Intermediate Mass Black Holes with the H.E.S.S. experiment
HESS Collaboration, F Aharonian, G. Bertone
The H.E.S.S. array of Cherenkov telescopes has performed, from 2004 to 2007, a survey of the inner Galactic plane at photon energies above 100 GeV. About 400 hours of data have bee…
Observation of the suppression of the flux of cosmic rays above 4x10^19eV
The Pierre Auger Collaboration
The energy spectrum of cosmic rays above 2.5x10^18eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the flux, J ~ E…
H.E.S.S. upper limits for Kepler's supernova remnant
HESS Collaboration, F. Aharonian
Observations of Kepler's supernova remnant (G4.5+6.8) with the H.E.S.S. telescope array in 2004 and 2005 with a total live time of 13 h are presented. Stereoscopic imaging of Chere…
Prospects and pitfalls of gravitational lensing in large supernova surveys
Jakob Jonsson, Taia Kronborg, Edvard Mortsell +1
To investigate the effect of gravitational lensing of supernovae in large ongoing surveys, we simulate the effect of gravitational lensing magnification on individual supernovae us…
Influence of Population III stars on cosmic chemical evolution
E. Rollinde, E. Vangioni, D. Maurin +4
New observations from the Hubble ultra deep field suggest that the star formation rate at z>7 drops off faster than previously thought. Using a newly determined star formation rate…
UHE tau neutrino flux regeneration while skimming the Earth
Oscar Blanch Bigas, Olivier Deligny, Kévin Payet +1
The detection of Earth-skimming tau neutrinos has turned into a very promising strategy for the observation of ultra-high energy cosmic neutrinos. The sensitivity of this channel c…
Clustering of supernova Ia host galaxies
R. G. Carlberg, M. Sullivan, D. Le Borgne +16
For the first time the cross-correlation between type Ia supernova host galaxies and surrounding field galaxies is measured using the Supernova Legacy Survey sample. Over the z=0.2…
LSST: from Science Drivers to Reference Design and Anticipated Data Products
Željko Ivezić, Steven M. Kahn, J. Anthony Tyson +310
(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a sin…
Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
M. Kowalski, D. Rubin, G. Aldering +67
We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compi…
Estimating a cosmic ray detector exposure sky map under the hypothesis of seasonal and diurnal effects factorization
E. M. Santos, C. Bonifazi, A. Letessier-Selvon
The measurement of large scale patterns or anisotropies in the arrival direction of high energy cosmic rays is an important step towards the understanding of their origin. Such mea…
Exploring a SNR/Molecular Cloud Association Within HESS J1745-303
HESS Collaboration, F. Aharonian
HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously…