Starburst galaxies and star-forming active galactic nuclei are among the candidate sources thought to contribute appreciably to the extragalactic gamma-ray and neutrino backgrounds. NGC 1068 is the brightest of the star-forming galaxies found to emit gamma-rays from 0.1 to 50 GeV. Precise measurements of the high-energy spectrum are crucial to study the particle accelerators and probe the dominant emission mechanisms. We have carried out 125 hr of observations of NGC 1068 with the MAGIC telescopes in order to search for gamma-ray emission in the very-high-energy band. We did not detect significant gamma-ray emission, and set upper limits at the 95% confidence level to the gamma-ray flux above 200 GeV f < 5.1 × 10-13 cm-2 s-1. This limit ...
We compute the non-thermal emissions produced by relativistic particles accelerated by the shocks dr...
The origins of high-energy astrophysical neutrinos remain a mystery despite extensive searches for t...
International audiencePowerful winds with wide opening angles, likely driven by accretion disks arou...
Starburst galaxies and star-forming active galactic nuclei are among the candidate sources thought t...
Starburst galaxies and star-forming active galactic nuclei are among the candidate sources thought t...
Starburst galaxies and star-forming active galactic nuclei (AGN) are among the candidate sources tho...
A supermassive black hole, obscured by cosmic dust, powers the nearby active galaxy NGC 1068. Neutri...
Several observations are revealing the widespread occurrence of mildly relativistic wide-angle AGN w...
We compute the non-thermal emissions produced by relativistic particles accelerated by the AGN-drive...
International audienceVarious observations are revealing the widespread occurrence of fast and power...
We compute the non-thermal emissions produced by relativistic particles accelerated by the shocks dr...
The origins of high-energy astrophysical neutrinos remain a mystery despite extensive searches for t...
International audiencePowerful winds with wide opening angles, likely driven by accretion disks arou...
Starburst galaxies and star-forming active galactic nuclei are among the candidate sources thought t...
Starburst galaxies and star-forming active galactic nuclei are among the candidate sources thought t...
Starburst galaxies and star-forming active galactic nuclei (AGN) are among the candidate sources tho...
A supermassive black hole, obscured by cosmic dust, powers the nearby active galaxy NGC 1068. Neutri...
Several observations are revealing the widespread occurrence of mildly relativistic wide-angle AGN w...
We compute the non-thermal emissions produced by relativistic particles accelerated by the AGN-drive...
International audienceVarious observations are revealing the widespread occurrence of fast and power...
We compute the non-thermal emissions produced by relativistic particles accelerated by the shocks dr...
The origins of high-energy astrophysical neutrinos remain a mystery despite extensive searches for t...
International audiencePowerful winds with wide opening angles, likely driven by accretion disks arou...