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Authors whose works are in public domain in at least one jurisdiction

List of works by Ulisses Barres de Almeida

1-50 of 151 results

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

article by Marcos Actis et al published 23 November 2011 in Experimental Astronomy

Energy Spectrum of Cosmic-Ray Electrons at TeV Energies

scientific article published in Physical Review Letters

Introducing the CTA concept

Simultaneous observations of PKS 2155-304 with HESS, Fermi, RXTE, and ATOM: spectral energy distributions and variability in a low state

scientific article published in the Astrophysical Journal

Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S

scientific article published in Astronomy and Astrophysics

Radio imaging of the very-high-energy gamma-ray emission region in the central engine of a radio galaxy

scientific article published on 2 July 2009

Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622

scientific article published in Astronomy and Astrophysics

Detection of very-high energyγ-ray emission from NGC 1275 by the MAGIC telescopes

scientific article published in Astronomy and Astrophysics

Optimized dark matter searches in deep observations of Segue 1 with MAGIC

scientific article (publication date: 6 February 2014)

Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304

scientific article (publication date: 22 October 2008)

Constraining cosmic rays and magnetic fields in the Perseus galaxy cluster with TeV observations by the MAGIC telescopes

scientific article published in Astronomy and Astrophysics

VHEγ-ray emission of PKS 2155–304: spectral and temporal variability

scientific article published in Astronomy and Astrophysics

Very high energy gamma-ray observations of the galaxy clusters Abell 496 and Abell 85 with HESS

scientific article published in Astronomy and Astrophysics

Search for Lorentz Invariance breaking with a likelihood fit of the PKS 2155-304 flare data taken on MJD 53944

scientific article

A multiwavelength view of the flaring state of PKS 2155-304 in 2006

scientific article published in Astronomy and Astrophysics

Discovery of VHEγ-rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations

scientific article published in Astronomy and Astrophysics

First detection of VHEγ-rays from SN 1006 by HESS

scientific article published in Astronomy and Astrophysics

MAGIC gamma-ray and multi-frequency observations of flat spectrum radio quasar PKS 1510−089 in early 2012

scientific article published in Astronomy and Astrophysics

H.E.S.S. constraints on dark matter annihilations towards the sculptor and carina dwarf galaxies

scientific article published in January 2011

Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010

scientific article

Constraints on the multi-TeV particle population in the Coma galaxy cluster with HESS observations

scientific article published in Astronomy and Astrophysics

Detection of gamma rays from a starburst galaxy.

scientific article published on 24 September 2009

Revisiting the Westerlund 2 field with the HESS telescope array

scientific article published in Astronomy and Astrophysics

Localizing the VHE γ-ray source at the Galactic Centre

scientific article

Very high energy {gamma}-rays from the universe's middle age: detection of the z = 0.940 blazar PKS 1441+25 with MAGIC

scientific article

Multiwavelength observations of Mrk 501 in 2008

scientific article published in Astronomy and Astrophysics

Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energyγ-rays

scientific article published in Astronomy and Astrophysics

Very high energy γ-ray observations of the binary PSR B1259–63/SS2883 around the 2007 Periastron

scientific article published in Astronomy and Astrophysics

Morphological and spectral properties of the W51 region measured with the MAGIC telescopes

scientific article published in Astronomy and Astrophysics

Simultaneous HESS and Chandra observations of Sagitarius A$^{\star}$ during an X-ray flare

scientific article published in Astronomy and Astrophysics

Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state

scientific article published in Astronomy and Astrophysics

Discovery of the source HESS J1356-645 associated with the young and energetic PSR J1357-6429

scientific article published in Astronomy and Astrophysics

Search for dark matter annihilation signals from the Fornax galaxy cluster with H.E.S.S

scientific article published in the Astrophysical Journal

MAGIC upper limits on the GRB 090102 afterglow

scientific article

Active Galactic Nuclei under the scrutiny of CTA

Rapid and multiband variability of the TeV bright active nucleus of the galaxy IC 310

scientific article published in Astronomy and Astrophysics

Performance of the MAGIC telescopes under moonlight

The 2009 multiwavelength campaign on Mrk 421: Variability and correlation studies

scientific article published in Astronomy and Astrophysics

Investigating the peculiar emission from the new VHE gamma-ray source H1722+119

scholarly article

MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context

scientific article published in Astronomy and Astrophysics

Multifrequency studies of the peculiar quasar 4C +21.35 during the 2010 flaring activity

scientific article published in the Astrophysical Journal

Deep observation of the NGC 1275 region with MAGIC: search of diffuseγ-ray emission from cosmic rays in the Perseus cluster

scientific article published in Astronomy and Astrophysics

Multi-wavelength observations of H 2356–309

scientific article published in Astronomy and Astrophysics

Multiwavelength study of quiescent states of Mrk 421 with unprecedented hard X-ray coverage provided by NuSTAR in 2013

scientific article published in the Astrophysical Journal

A new SNR with TeV shell-type morphology: HESS J1731-347

scientific article published in Astronomy and Astrophysics

PKS 2005-489 at VHE: four years of monitoring with HESS and simultaneous multi-wavelength observations

scientific article published in Astronomy and Astrophysics

Teraelectronvolt pulsed emission from the Crab Pulsar detected by MAGIC

scientific article published in Astronomy and Astrophysics

FIRST NuSTAR OBSERVATIONS OF MRK 501 WITHIN A RADIO TO TeV MULTI-INSTRUMENT CAMPAIGN

scientific article (publication date: 9 October 2015)

Detection of bridge emission above 50 GeV from the Crab pulsar with the MAGIC telescopes

scientific article published in Astronomy and Astrophysics

Discovery of TeV γ-ray emission from the neighbourhood of the supernova remnant G24.7+0.6 by MAGIC

scholarly article