2024-03-28T23:43:28Z
https://zenodo.org/oai2d
oai:zenodo.org:2563639
2020-01-20T14:14:03Z
user-magictelescopes
openaire
MAGIC Publication Bureau
Giovanna Pedaletti
Marina Manganaro
Josefa Becerra Gonzalez
Vandad Fallah Ramazani
MAGIC Collaboration
2019-02-13
<p>Super-massive black holes at the center of distant galaxies accrete surrounding matter and can thus sustain a very energetic jet. When the jet faces towards Earth, the relativistic effects on the observed emission are more extreme and we call these galaxies blazars. MAGIC has detected very-high-energy emission from the blazar S4 0954+65 for the first time while it was showing a high flux in the optical range. This detection was then enriched by the collection of observations in radio, optical, X-rays and high-energy gamma rays. The emission is consistent with a blob of matter (moving through a magnetic field) that eventually crosses the shock in the jet. This extremely high state and multi-wavelength detection allows to sub-classify it as a special BL Lac object sharing characteristics with the other type of blazars called Flat Spectrum Radio Quasars (FSRQs), where the interactions of the blob traveling within the jet with the surrounding emission becomes important.<br>
You can find the paper here: http://cdsads.u-strasbg.fr/abs/2018A%26A...617A..30M</p>
Please send questions about this paper to magic_sapo@mpp.mpg.de
https://doi.org/10.5281/zenodo.2563639
oai:zenodo.org:2563639
eng
Zenodo
https://zenodo.org/communities/magictelescopes
https://doi.org/10.5281/zenodo.2563638
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
gamma rays: galaxies/galaxies: active/BL Lacertae objects: individual: S4 0954+65
Accompanying slides for the MAGIC publication "The detection of the blazar S4 0954+65 at very-high-energy with the MAGIC telescopes during an exceptionally high optical state"
info:eu-repo/semantics/lecture
oai:zenodo.org:3556358
2020-01-20T15:09:36Z
user-magictelescopes
openaire
MAGIC Publication Bureau
Joaquim Palacio
Michele Doro
Monica Vazquez Acosta
Javier Rico
MAGIC Collaboration
2019-11-28
<p>This work is dedicated to the search of dark matter in the Perseus Galaxy Cluster with MAGIC:<br>
Clusters of galaxies are the largest known gravitationally bound structures in the Universe, and most of their masses comes in the form of dark matter. The study, conducted on almost 400 hours of data taken with a special technique in orderin order to take into account the cluster morphology (many bright sources were present in the field of view) concludes that dark matter particles have a decay lifetime longer than ∼10^26s in all considered channels. This result improves previous lower limits found by MAGIC and represent the strongest set of limits on decaying dark matter particles from ground-based gamma-ray instruments.<br>
Find the full paper on ArXiv: <a href="https://arxiv.org/abs/1806.11063v3">https://arxiv.org/abs/1806.11063v3</a></p>
Please send questions about this paper to magic_sapo@mpp.mpg.de
https://doi.org/10.5281/zenodo.3556358
oai:zenodo.org:3556358
eng
Zenodo
https://zenodo.org/communities/magictelescopes
https://doi.org/10.5281/zenodo.3556357
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
decaying dark matter, cluster of galaxies, indirect searches, Imaging Air CherenkovTelescopes, Perseus
Constraining Dark Matter lifetime with a deep gamma-ray survey of the Perseus Galaxy Cluster with MAGIC
info:eu-repo/semantics/lecture
oai:zenodo.org:3556334
2020-01-20T15:15:29Z
user-magictelescopes
openaire
MAGIC Publication Bureau
Dorit Glawion
Cosimo Nigro
Konstantin Pfrang
MAGIC Collaboration
2019-11-28
<p>This work is focused on the radio galaxy NGC 1275, the central galaxy of the Perseus cluster. The source was part of a MAGIC monitoring program and showed a very strong flare the night between 31st of December 2016 and the 1st of January 2017. The analysis of simultaneous data taken with MAGIC, Fermi-LAT and KVA telescopes made possible a deep study of the outburst. The very striking result of this paper is the very fast variability observed in gamma-rays: the observed gamma-ray flare therefore challenges all the discussed models for fast variability of VHE gamma-ray emission in active galactic nuclei. Very interesting, isnt'it? The accepted paper is available at the link below:<br>
<a href="https://arxiv.org/abs/1806.01559">https://arxiv.org/abs/1806.01559</a><br>
</p>
Please send questions about this paper to magic_sapo@mpp.mpg.de
https://doi.org/10.5281/zenodo.3556334
oai:zenodo.org:3556334
eng
Zenodo
https://zenodo.org/communities/magictelescopes
https://doi.org/10.5281/zenodo.3556333
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
galaxies: active – galaxies: jets – galaxies: individual: NGC 1275 – gamma rays: galaxies
Accompanying slides for the MAGIC publication "Gamma-ray flaring activity of NGC 1275 in 2016-2017 measured by MAGIC"
info:eu-repo/semantics/lecture
oai:zenodo.org:2563837
2020-01-20T17:01:24Z
user-magictelescopes
openaire
Alba Fernàndez-Barral
MAGIC Publication Bureau
Christian Fruck
MAGIC Collaboration
2017-07-01
<p>The manuscript reports the observations on SN 2014J, the closest Type Ia Supernova in the last four decades, located in the starburst galaxy M82. This result corresponds to the first upper limits on the very-high-energy gamma-ray emission from this type of astrophysical sources. The paper also provides propects for observing gamma rays of hadronic origin from SN 2014J in the near future. You can find the paper: <a href="https://doi.org/10.1051/0004-6361/201629574">https://doi.org/10.1051/0004-6361/201629574</a></p>
Please send questions about this paper to magic_sapo@mpp.mpg.de
https://doi.org/10.5281/zenodo.2563837
oai:zenodo.org:2563837
eng
Zenodo
https://zenodo.org/communities/magictelescopes
https://doi.org/10.5281/zenodo.2563836
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Astronomy and Astrophysics, 602, A98, (2017-07-01)
Accompanying slides for the MAGIC publication "Very-high-energy gamma-ray observations of the Type Ia Supernova SN 2014J with the MAGIC telescopes"
info:eu-repo/semantics/lecture
oai:zenodo.org:2558214
2020-01-20T13:03:39Z
user-magictelescopes
openaire
MAGIC Publication Bureau
Marina Manganaro
Bindu Rani
Elina Lindfors
Giovanna Pedaletti
MAGIC Collaboration
2019-02-06
<p>This work describes an impressive outburst of the galaxy S5 0716+714 which was registered by many instruments simultaneously. The extensive dataset collected from several telescopes, spanning the entire electromagnetic spectrum, provided a unique opportunity to study the emission mechanism of blazars and in particular BL Lac objects as S5 0716+714. The authors investigate the nature of the flare obtaining a unique insight on how the very-high-energy gamma-ray flares are connected to the activity in the jet. The complexity and richness of the dataset can be appreciated in the picture, which collects all the lightcurves from the many telescopes involved. If you want to know more, follow the link: http://adsabs.harvard.edu/abs/2018A%26A...619A..45M</p>
Please send questions about this paper to magic_sapo@mpp.mpg.de
https://doi.org/10.5281/zenodo.2558214
oai:zenodo.org:2558214
eng
Zenodo
https://zenodo.org/communities/magictelescopes
https://doi.org/10.5281/zenodo.2558213
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
galaxies: active – BL Lacertae objects: individual: S5 0716+714 – galaxies:jets – gamma-rays:galaxies
Accompanying slides for the MAGIC publication "Multi-wavelength characterization of the blazar S5~0716+714 during an unprecedented outburst phase"
info:eu-repo/semantics/lecture