Search

Your search keyword '"Elia Do Souto Espiñeira"' showing total 10 results
Start Over Author "Elia Do Souto Espiñeira" Topic astrophysics::cosmology and extragalactic astrophysics
10 results on '"Elia Do Souto Espiñeira"'

1. Multi-messenger characterization of Mrk501 during historically low X-ray and gamma-ray activity

Author

Lluis Font, Marcel Strzys, Simone Mender, Javier Herrera, Stefano Covino, Christian Fruck, Tjark Miener, David Paneque, Francesco Dazzi, Andrés Baquero, Vandad Fallah Ramazani, Yusuke Suda, Josep M. Paredes, Antonio Stamerra, Cosimo Nigro, Carlo Vigorito, Jelena Strišković, M. I. Martínez, Giacomo D'Amico, Marcos López-Moya, Wlodek Bednarek, Jarred Gershon Green, Sofia Ventura, Javier Rico, Tokonatsu Yamamoto, Dario Hrupec, Mitsunari Takahashi, Giovanni Ceribella, Federico Di Pierro, Ruben Lopez-Coto, John Hoang, Lorenzo Bellizzi, Wrijupan Bhattacharyya, Vitaly Neustroev, Luca Tosti, Jordi Delgado, Manuel Artero, Kevin Schmidt, Marie Karjalainen, Irene Jiménez Martínez, Jose Miguel Miranda, Tihomir Surić, Michele Palatiello, Chiara Righi, Valerio D'Elia, Yuki Iwamura, Francesco Longo, Ciro Bigongiari, Tomislav Terzić, Daniela Dorner, Yating Chai, Stefan Cikota, Massimo Persic, Pawel Gliwny, Nicola Giglietto, G. Maneva, Iva Šnidarić, Giacomo Bonnoli, Gaia Vanzo, Lena Linhoff, P. G. Prada Moroni, Louis Antonelli, L. Maraschi, Elina Lindfors, Junko Kushida, Lovro Pavletić, Elia Do Souto Espiñeira, Alessandra Lamastra, Vincenzo Vitale, Juliane van Scherpenberg, Chaitanya Priyadarshi, Ivica Puljak, Karl Mannheim, Victoria Moreno, Alicia López-Oramas, Thomas Schweizer, Adrian Biland, Davide Depaoli, Marina Manganaro, Carolin Wunderlich, Darko Zarić, Daniel Mazin, Abelardo Moralejo, Satoshi Fukami, Francesco Leone, Ramon J. García López, Stefano Ansoldi, Julian Sitarek, Riccardo Paoletti, Martin Makariev, Petar Temnikov, Oscar Blanch, Leonardo Di Venere, Koji Noda, Elisa Bernardini, Daniela Hadasch, Katsuaki Asano, Ievgen Vovk, Markus Gaug, Masahiro Teshima, Maria Victoria Fonseca, Alessio Berti, Elena Moretti, Maria-Isabel Bernardos, Stefano Menchiari, Markus Garczarczyk, Konstancja Satalecka, Manuela Mallamaci, Jürgen Besenrieder, Dominik Elsaesser, Francesco Giordano, Antonio Tutone, Yoshiki Ohtani, Victor A. Acciari, Alessandro De Angelis, Bernd Schleicher, Edgar Molina, Paolo Da Vela, Razmik Mirzoyan, Josefa González, Michele Doro, Damir Lelas, Nikola Godinovic, Axel Arbet Engels, Sidika Merve Colak, Lea Heckmann, Francesco Gabriele Saturni, Monica Vazquez Acosta, Moritz Hütten, David H. Green, Takeshi Nakamori, Santiago Ubach, Barbara De Lotto, Dorota Sobczyńska, Zeljka Bosnjak, Tomohiko Oka, Roberto Carosi, Matteo Cerruti, Camilla Maggio, Simona Paiano, Kyoshi Nishijima, Alicia Fattorini, Kazuma Ishio, Yasushi Fukazawa, Elisa Prandini, Ashot Chilingarian, Davide Miceli, Alessia Spolon, Léa Jouvin, Vassil Verguilov, Pratik Majumdar, Daniel Kerszberg, Marc Ribó, Martin Will, Jorge Otero-Santos, Hidetoshi Kubo, Tomohiro Inada, Seiya Nozaki, Juan Abel Barrio, Narek Sahakyan, Carlos Delgado Mendez, Manuel Delfino, Ulisses Barres de Almeida, Ana Babić, Sargis Gasparyan, Daniel Morcuende, Jose Luis Contreras, Wolfgang Rhode, Giovanni Busetto, Juan Cortina, Stefano Truzzi, Pablo Peñil, Hendrik Bökenkamp, Saša Mićanović, Ivana Batković, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Shunsuke Sakurai, Alice Donini, Lara Nava, Fabrizio Tavecchio, Eduardo Colombo, Serena Loporchio, D. Dominis Prester, Jenni Jormanainen, Bernardo Machado de Oliveira Fraga, Alexander Hahn, Marine Pihet, Takashi Saito, Dominik Baack, Yukiho Kobayashi, Mosè Mariotti, Saverio Lombardi, and Andrea Rugliancich

Subjects
Physics, Active galactic nucleus, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Flux, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Universe, Crab Nebula, MAGIC (telescope), Blazar, Astrophysics::Galaxy Astrophysics, media_common
Abstract

Blazars, together with other active galactic nuclei, are the most luminous persistent sources in our universe; and therefore a prime candidate for very-high-energy (>0.2 TeV, VHE) gamma-ray observations. For the two MAGIC telescopes, the Mrk501 galaxy is among the brightest observed blazars due to its proximity. We report a multi-wavelength and multi-messenger study of Mrk501 with data from 2017 to 2020, when Mrk501 showed a VHE flux typically below 10% that of the Crab Nebula. During this time, we performed three long observations with NuSTAR, which characterized the hard X-ray emission during three different low-activity flux levels. This Mrk501 dataset provided the unprecedented opportunity to study multi-wavelength variability and correlations with sensitive instruments during historically low X-ray and VHE gamma-ray emission (below 5% of the Crab Nebula flux in the VHE range), which could be considered as the baseline emission of Mrk501. We complemented the broadband spectral energy distributions (SED) of the identified historically low X-ray and VHE gamma-ray flux with data published by IceCube, in order to evaluate the potential existence of a hadronic component that is stable (or slowly variable), and less visible than the leptonic component that may dominate the emission during typical and flaring activity. In this contribution, we will also describe the evolution of the broadband SED comparing different theoretical scenarios., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)

Published
2022
Full Text
View/download PDF

2. BL Lac object 1ES 0647+250, a decade of MWL observations

Author

Francesco Longo, John Hoang, Cosimo Nigro, Abelardo Moralejo, Elia Do Souto Espiñeira, Sofia Ventura, Lluis Font, Alessandra Lamastra, Josefa González, Alexander Hahn, Manuel Artero, Vincenzo Vitale, Chiara Righi, Martin Makariev, Oscar Blanch, Maria-Isabel Bernardos, Tomislav Terzić, Dominik Elsaesser, Razmik Mirzoyan, Marcel Strzys, Daniel Kerszberg, Marine Pihet, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Serena Loporchio, Damir Lelas, Simone Mender, Javier Herrera, Mosè Mariotti, Francesco Leone, Pratik Majumdar, Julian Sitarek, Davide Depaoli, Stefano Truzzi, Bernd Schleicher, Takeshi Nakamori, Lea Heckmann, Francesco Gabriele Saturni, Saverio Lombardi, Alice Donini, Andrea Rugliancich, Edgar Molina, D. Dominis Prester, Marc Ribó, Katsuaki Asano, Chaitanya Priyadarshi, Alessio Berti, Barbara De Lotto, Daniela Hadasch, Dorota Sobczyńska, Zeljka Bosnjak, Sidika Merve Colak, Monica Vazquez Acosta, Tomohiko Oka, Simona Paiano, Giacomo D'Amico, Lara Nava, Vandad Fallah Ramazani, Maria Victoria Fonseca, Martin Will, Hidetoshi Kubo, Tomohiro Inada, Jorge Otero-Santos, Pablo Peñil, Leonardo Di Venere, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Camilla Maggio, Satoshi Fukami, Alicia Fattorini, Fabrizio Tavecchio, Jenni Jormanainen, Josep M. Paredes, Louis Antonelli, L. Maraschi, Seiya Nozaki, Nikola Godinovic, Axel Arbet Engels, Eduardo Colombo, Adrian Biland, Antonio Stamerra, Elina Lindfors, Yoshiki Ohtani, Jordi Delgado, Marcos López-Moya, Ivica Puljak, Wlodek Bednarek, Federico Di Pierro, Giacomo Bonnoli, Kyoshi Nishijima, Bernardo Machado de Oliveira Fraga, Manuel Delfino, Ulisses Barres de Almeida, Tjark Miener, David Paneque, Daniel Mazin, Tihomir Surić, Ruben Lopez-Coto, Kazuma Ishio, Masahiro Teshima, Jarred Gershon Green, Yating Chai, Kevin Schmidt, P. G. Prada Moroni, Ramon J. García López, Stefan Cikota, Matteo Cerruti, Yusuke Suda, Irene Jiménez Martínez, Pawel Gliwny, Nicola Giglietto, Juan Abel Barrio, Narek Sahakyan, Carlo Vigorito, Ana Babić, Massimo Persic, Jelena Strišković, Marina Manganaro, Andrés Baquero, Jose Miguel Miranda, Victoria Moreno, Lena Linhoff, Saša Mićanović, Ivana Batković, Darko Zarić, Roberto Carosi, Daniel Morcuende, Carolin Wunderlich, Jose Luis Contreras, Elisa Prandini, Juan Cortina, Yasushi Fukazawa, Paolo Da Vela, Yuki Iwamura, Junko Kushida, Carlos Delgado Mendez, Karl Mannheim, Lovro Pavletić, Stefano Covino, Marie Karjalainen, David H. Green, Elena Moretti, Davide Miceli, Francesco Dazzi, Hendrik Bökenkamp, Daniela Dorner, Gaia Vanzo, Santiago Ubach, Konstancja Satalecka, Lorenzo Bellizzi, Alessia Spolon, Manuela Mallamaci, Ashot Chilingarian, Ievgen Vovk, Léa Jouvin, Michele Doro, Alessandro De Angelis, Dario Hrupec, M. I. Martínez, Michele Palatiello, Alicia López-Oramas, Giovanni Ceribella, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Stefano Menchiari, Ciro Bigongiari, Mitsunari Takahashi, Vassil Verguilov, Luca Tosti, Petar Temnikov, Sargis Gasparyan, Koji Noda, Wrijupan Bhattacharyya, Valerio D'Elia, Iva Šnidarić, Elisa Bernardini, Markus Garczarczyk, G. Maneva, Takashi Saito, Juliane van Scherpenberg, Wolfgang Rhode, Giovanni Busetto, Dominik Baack, Yukiho Kobayashi, Christian Fruck, Shunsuke Sakurai, Thomas Schweizer, Stefano Ansoldi, Riccardo Paoletti, Victor A. Acciari, Markus Gaug, and Moritz Hütten

Subjects
Physics, Crab Nebula, Astrophysics::High Energy Astrophysical Phenomena, Flux, Spectral energy distribution, MAGIC (telescope), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Blazar, Spectral line, Redshift, BL Lac object
Abstract

The high-peaked BL Lac object 1ES 0647+250 is one of the few distant blazars detected at very-high-energy (VHE, E>100 GeV) γ rays during non-flaring activity. Its redshift is still uncertain, with a recently proposed lower limit of z>0.29. This blazar was first detected by the MAGIC telescopes between 2009 and 2011 during its low state, displaying a flux of around 2% of the Crab Nebula above 100 GeV, but it has shown several periods of high activity, where the VHE γ-ray flux increased by more than one order of magnitude. The VHE spectra of four observed periods are characterized and the redshift of this source is estimated using the HE and VHE spectral shapes. The multi-wavelength data set collected from 2009 to 2020 introduced in this work will serve as the seed for further studies, including detailed studies of the broad-band spectral energy distribution for different activity levels and multi-band variability and correlation studies., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)

Published
2022

3. Search for Gamma-ray Line emission from Dark Matter annihilation in the Galactic Centre with the MAGIC telescopes

Author

Tomohiro Inada, Ana Babic, Andrés Baquero, Ivana Batković, Josefa Becerra Gonzalez, Jürgen Besenrieder, Hendrik Bökenkamp, Zeljka Bosnjak, Elia Do Souto Espiñeira, Ramon J. García López, Nikola Godinovic, Moritz Hütten, Irene Jiménez Martínez, Ruben Lopez-Coto, Marcos López-Moya, Alicia López-Oramas, Mosè Mariotti, Manel Martinez, Saša Mićanović, Lovro Pavletić, Pablo Peñil, Marc Ribó, Iva Šnidarić, Jelena Strišković, Tihomir Surić, Tomislav Terzic, Darko Zarić, Victor A. Acciari, Stefano Ansoldi, Lucio Angelo Antonelli, Axel Arbet Engels, Manuel Artero, Katsuaki Asano, Dominik Baack, Ana Babić, Ulisses Barres de Almeida, Juan Abel Barrio, Josefa Becerra González, Wlodek Bednarek, Lorenzo Bellizzi, Elisa Bernardini, Maria-Isabel Bernardos, Alessio Berti, Wrijupan Bhattacharyya, Ciro Bigongiari, Adrian Biland, Oscar Blanch, Giacomo Bonnoli, Željka Bošnjak, Giovanni Busetto, Roberto Carosi, Giovanni Ceribella, Matteo Cerruti, Yating Chai, Ashot Agassi Chilingarian, Stefan Cikota, Sidika Merve Colak, Eduardo Colombo, Jose Luis Contreras, Juan Cortina, Stefano Covino, Giacomo D'Amico, Valerio D'Elia, Paolo Da Vela, Francesco Dazzi, Alessandro De Angelis, Barbara De Lotto, Manuel Delfino, Jordi Delgado, Carlos Delgado Mendez, Davide Depaoli, Federico Di Pierro, Leonardo Di Venere, Dijana Dominis Prester, Alice Donini, Daniela Dorner, Michele Doro, Dominik Elsaesser, Vandad Fallah Ramazani, Alicia Fattorini, Maria Victoria Fonseca, Lluis Font, Christian Fruck, Satoshi Fukami, Yasushi Fukazawa, Markus Garczarczyk, Sargis Gasparyan, Markus Gaug, Nicola Giglietto, Francesco Giordano, Pawel Gliwny, Nikola Godinović, David Green, Jarred Gershon Green, Daniela Hadasch, Alexander Hahn, Lea Heckmann, Javier Herrera, John Hoang, Dario Hrupec, Kazuma Ishio, Yuki Iwamura, Irene Jimenez-Martinez, Jenni Jormanainen, Léa Jouvin, Marie Karjalainen, Daniel Kerszberg, Yukiho Kobayashi, Hidetoshi Kubo, Junko Kushida, Alessandra Lamastra, Damir LELAS, Francesco Leone, Elina Lindfors, Lena Linhoff, Saverio Lombardi, Francesco Longo, Rubén López-Coto, Serena Loporchio, Bernardo Machado de Oliveira Fraga, Camilla Maggio, Pratik Majumdar, Martin MAKARIEV, Manuela Mallamaci, Galina Maneva, Marina Manganaro, Karl Mannheim, Laura Maraschi, Manel Martínez, Daniel Mazin, Stefano Menchiari, Simone Mender, Davide Miceli, Tjark Miener, Jose Miguel Miranda, Razmik Mirzoyan, Edgar Molina, Abelardo Moralejo, Daniel Morcuende, Victoria Moreno, Elena Moretti, Takeshi Nakamori, Lara Nava, Vitaly Neustroev, Cosimo Nigro, Kari Nilsson, Kyoshi Nishijima, Koji Noda, Seiya Nozaki, Yoshiki Ohtani, Tomohiko Oka, Jorge Otero-Santos, Simona Paiano, Michele Palatiello, David Paneque, Riccardo Paoletti, Josep M. Paredes, Massimo Persic, Marine Pihet, Pier Giorgio Prada Moroni, Elisa Prandini, Chaitanya Priyadarshi, Ivica Puljak, Wolfgang Rhode, Javier Rico, Chiara Righi, Andrea Rugliancich, Narek Sahakyan, Takayuki Saito, Shunsuke Sakurai, Konstancja Satalecka, Francesco Gabriele Saturni, Bernd Schleicher, Kevin Schmidt, Thomas Schweizer, Julian Sitarek, Dorota Sobczyńska, Alessia Spolon, Antonio Stamerra, Derek Strom, Marcel C. Strzys, Yusuke Suda, Mitsunari Takahashi, Ryuji Takeishi, Fabrizio Tavecchio, Petar Temnikov, Tomislav Terzić, Masahiro Teshima, Luca Tosti, Stefano Truzzi, Antonio Tutone, Santiago Ubach, Juliane van Scherpenberg, Gaia Vanzo, Monica VAZQUEZ ACOSTA, Sofia Ventura, Vassil VERGUILOV, Carlo francesco Vigorito, Vincenzo Vitale, Ievgen Vovk, Martin Will, Carolin Wunderlich, Tokonatsu Yamamoto, and Daniele Ninci

Subjects
Physics, Annihilation, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Spectral line, Sky, MAGIC (telescope), Zenith, Astrophysics::Galaxy Astrophysics, media_common
Abstract

We present the first search for dark matter (DM) spectral lines in the Galactic centre (GC) region with the MAGIC telescopes. The MAGIC telescopes, located on the Canary island of La Palma (Spain), are sensitive to gamma rays in the energy range from 50 GeV to 50 TeV. MAGIC has performed indirect DM searches in various astrophysical targets, such as dwarf spheroidal galaxies and clusters of galaxies. Observations at high zenith angles significantly increase the telescopes' collection area and sensitivity for gamma rays in the TeV regime. We present the results obtained with more than 200 hours of high-zenith angle observations of the GC region with MAGIC, which allow us to probe promising heavy SUSY models, and to obtain competitive limits to the DM annihilation cross-section at high DM particle mass, compared to existing constraints. We will discuss how we exploit the data from a complex sky region to search for a line-like DM signature., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)

Published
2022
Full Text
View/download PDF

4. Follow-up observations of GW170817 with the MAGIC telescopes

Author

Antonio Stamerra, Om Sharan Salafia, Alessio Berti, Stefano Covino, Valerio D'Elia, Davide Miceli, Lara Nava, Barbara Patricelli, Chiara Righi, Susumu Inoue, Lucio Angelo Antonelli, Stefano Ansoldi, Barbara De Lotto, Francesco Longo, Fabrizio Tavecchio, Ana Babic, Josefa Becerra Gonzalez, Zeljka Bosnjak, Nikola Godinovic, Ruben Lopez-Coto, Manel Martinez, Tomislav Terzic, Victor A. Acciari, Axel Arbet Engels, Manuel Artero, Katsuaki Asano, Dominik Baack, Ana Babić, Andrés Baquero, Ulisses Barres de Almeida, Juan Abel Barrio, Ivana Batković, Josefa Becerra González, Wlodek Bednarek, Lorenzo Bellizzi, Elisa Bernardini, Maria-Isabel Bernardos, Jürgen Besenrieder, Wrijupan Bhattacharyya, Ciro Bigongiari, Adrian Biland, Oscar Blanch, Hendrik Bökenkamp, Giacomo Bonnoli, Željka Bošnjak, Giovanni Busetto, Roberto Carosi, Giovanni Ceribella, Matteo Cerruti, Yating Chai, Ashot Agassi Chilingarian, Stefan Cikota, Sidika Merve Colak, Eduardo Colombo, Jose Luis Contreras, Juan Cortina, Giacomo D'Amico, Paolo Da Vela, Francesco Dazzi, Alessandro De Angelis, Manuel Delfino, Jordi Delgado, Carlos Delgado Mendez, Davide Depaoli, Federico Di Pierro, Leonardo Di Venere, Elia Do Souto Espiñeira, Dijana Dominis Prester, Alice Donini, Daniela Dorner, Michele Doro, Dominik Elsaesser, Vandad Fallah Ramazani, Alicia Fattorini, Maria Victoria Fonseca, Lluis Font, Christian Fruck, Satoshi Fukami, Yasushi Fukazawa, Ramon J. García López, Markus Garczarczyk, Sargis Gasparyan, Markus Gaug, Nicola Giglietto, Francesco Giordano, Pawel Gliwny, Nikola Godinović, David Green, Jarred Gershon Green, Daniela Hadasch, Alexander Hahn, Lea Heckmann, Javier Herrera, John Hoang, Dario Hrupec, Moritz Hütten, Tomohiro Inada, Kazuma Ishio, Yuki Iwamura, Irene Jiménez Martínez, Jenni Jormanainen, Léa Jouvin, Marie Karjalainen, Daniel Kerszberg, Yukiho Kobayashi, Hidetoshi Kubo, Junko Kushida, Alessandra Lamastra, Damir LELAS, Francesco Leone, Elina Lindfors, Lena Linhoff, Saverio Lombardi, Rubén López-Coto, Marcos López-Moya, Alicia López-Oramas, Serena Loporchio, Bernardo Machado de Oliveira Fraga, Camilla Maggio, Pratik Majumdar, Martin MAKARIEV, Manuela Mallamaci, Galina Maneva, Marina Manganaro, Karl Mannheim, Laura Maraschi, Mosè Mariotti, Manel Martínez, Daniel Mazin, Stefano Menchiari, Simone Mender, Saša Mićanović, Tjark Miener, Jose Miguel Miranda, Razmik Mirzoyan, Edgar Molina, Abelardo Moralejo, Daniel Morcuende, Victoria Moreno, Elena Moretti, Takeshi Nakamori, Vitaly Neustroev, Cosimo Nigro, Kari Nilsson, Kyoshi Nishijima, Koji Noda, Seiya Nozaki, Yoshiki Ohtani, Tomohiko Oka, Jorge Otero-Santos, Simona Paiano, Michele Palatiello, David Paneque, Riccardo Paoletti, Josep M. Paredes, Lovro Pavletić, Pablo Peñil, Massimo Persic, Marine Pihet, Pier Giorgio Prada Moroni, Elisa Prandini, Chaitanya Priyadarshi, Ivica Puljak, Wolfgang Rhode, Marc Ribó, Javier Rico, Andrea Rugliancich, Narek Sahakyan, Takayuki Saito, Shunsuke Sakurai, Konstancja Satalecka, Francesco Gabriele Saturni, Bernd Schleicher, Kevin Schmidt, Thomas Schweizer, Julian Sitarek, Iva Šnidarić, Dorota Sobczyńska, Alessia Spolon, Jelena Strišković, Derek Strom, Marcel C. Strzys, Yusuke Suda, Tihomir Surić, Mitsunari Takahashi, Ryuji Takeishi, Petar Temnikov, Tomislav Terzić, Masahiro Teshima, Luca Tosti, Stefano Truzzi, Antonio Tutone, Santiago Ubach, Juliane van Scherpenberg, Gaia Vanzo, Monica VAZQUEZ ACOSTA, Sofia Ventura, Vassil VERGUILOV, Carlo francesco Vigorito, Vincenzo Vitale, Ievgen Vovk, Martin Will, Carolin Wunderlich, Tokonatsu Yamamoto, and Darko Zarić

Subjects
Physics, Neutron star, Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, MAGIC (telescope), Maximum flux, Gamma-ray burst
Abstract

The discovery of the electromagnetic counterpart AT2017gfo and the GRB 170817A, associated to the binary neutron star merger GW170817, was one of the major advances in the study of gamma- ray bursts (GRBs) and the hallmark of the multi-messenger astronomy with gravitational waves. Another breakthrough in GRB physics is represented by the discovery of the highly energetic, teraelectronvolt (TeV) component in the GRB 190114C, possibly an universal component in all GRBs. This conclusion is also suggested by the hint of TeV emission in the short GRB 160821B and a few more events reported in the literature. The missing observational piece is the joint detection of TeV emission and gravitational waves from a short GRB and its progenitor. MAGIC observed the counterpart AT2017gfo as soon as the visibility conditions allowed it, namely from January to June 2018. These observations correspond to the maximum flux level observed in the radio and X-ray bands. The upper limits derived from TeV observations are compared with the modelling of the late non-thermal emission using the multi-frequency SED.

Published
2021

5. Shedding light on the highest energy emission from GRBs with MAGIC observations

Author

Adrian Biland, Chiara Righi, D. Dominis Prester, Jenni Jormanainen, Tomohiko Oka, Tjark Miener, Chaitanya Priyadarshi, Bernardo Machado de Oliveira Fraga, Sargis Gasparyan, Dominik Elsaesser, Razmik Mirzoyan, David Paneque, Wolfgang Rhode, Damir Lelas, Jordi Delgado, Kyoshi Nishijima, Pratik Majumdar, Lea Heckmann, Giovanni Busetto, Daniela Dorner, Francesco Gabriele Saturni, Kevin Schmidt, Jelena Strišković, Dorota Sobczyńska, Zeljka Bosnjak, Yusuke Suda, Satoshi Fukami, Andrés Baquero, Julian Sitarek, Marina Manganaro, Daniela Hadasch, Yoshiki Ohtani, Carlo Vigorito, Martin Will, Junko Kushida, Gaia Vanzo, Ivica Puljak, Jorge Otero-Santos, Lovro Pavletić, Masahiro Teshima, Javier Rico, Tokonatsu Yamamoto, Kazuma Ishio, Seiya Nozaki, Elena Moretti, Ramon J. García López, Francesco Longo, Katsuaki Asano, Ciro Bigongiari, Vitaly Neustroev, Christian Fruck, Lena Linhoff, Daniel Morcuende, Jose Luis Contreras, Serena Loporchio, Wrijupan Bhattacharyya, Konstancja Satalecka, Michele Doro, M. I. Martínez, Santiago Ubach, Luca Tosti, Maria Victoria Fonseca, Juan Cortina, Petar Temnikov, Koji Noda, Juan Abel Barrio, Manuel Artero, Elisa Bernardini, Alexander Hahn, Abelardo Moralejo, Marie Karjalainen, Valerio D'Elia, Elisa Prandini, Narek Sahakyan, Nikola Godinovic, Tomislav Terzić, Louis Antonelli, Marine Pihet, Michele Palatiello, Manuela Mallamaci, Davide Depaoli, Bernd Schleicher, Hendrik Bökenkamp, Carlos Delgado Mendez, Alessandro De Angelis, G. Maneva, Edgar Molina, Carolin Wunderlich, Elia Do Souto Espiñeira, Daniel Kerszberg, Takashi Saito, Alice Donini, Leonardo Di Venere, Iva Šnidarić, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Victor A. Acciari, John Hoang, Dominik Baack, Matteo Cerruti, Ashot Chilingarian, Moritz Hütten, Lara Nava, Yukiho Kobayashi, Fabrizio Tavecchio, Eduardo Colombo, Takeshi Nakamori, Ryuji Takeishi, Barbara De Lotto, Martin Makariev, D. M. Strom, Kari Nilsson, Yuki Iwamura, Camilla Maggio, Mosè Mariotti, Oscar Blanch, Yasushi Fukazawa, Manuel Delfino, Ulisses Barres de Almeida, Ana Babić, Markus Garczarczyk, Saverio Lombardi, Josefa González, Juliane van Scherpenberg, Andrea Rugliancich, Alessandra Lamastra, Ievgen Vovk, Marc Ribó, Stefano Menchiari, Hidetoshi Kubo, Vincenzo Vitale, Tomohiro Inada, Maria-Isabel Bernardos, Francesco Leone, Simona Paiano, Alicia Fattorini, Massimo Persic, Roberto Carosi, Paolo Da Vela, Lluis Font, Giacomo Bonnoli, David H. Green, Davide Miceli, P. G. Prada Moroni, Marcel Strzys, Francesco Dazzi, Alessia Spolon, Léa Jouvin, Simone Mender, Javier Herrera, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Vassil Verguilov, Ruben Lopez-Coto, Irene Jiménez Martínez, Jose Miguel Miranda, Tihomir Surić, Yating Chai, Karl Mannheim, Stefan Cikota, Alicia López-Oramas, Pawel Gliwny, Nicola Giglietto, Cosimo Nigro, Sofia Ventura, Victoria Moreno, Darko Zarić, Alessio Berti, Axel Arbet Engels, Stefano Covino, Giovanni Ceribella, L. Maraschi, Elina Lindfors, Daniel Mazin, Sidika Merve Colak, Monica Vazquez Acosta, Giacomo D'Amico, Lorenzo Bellizzi, Jarred Gershon Green, Vandad Fallah Ramazani, Josep M. Paredes, Antonio Stamerra, Dario Hrupec, Mitsunari Takahashi, Thomas Schweizer, Stefano Ansoldi, Riccardo Paoletti, Markus Gaug, Stefano Truzzi, Pablo Peñil, Saša Mićanović, Ivana Batković, Susume Inoue, and Shunsuke Sakurai

Subjects
Physics, High energy, Experimental proof, Orders of magnitude (time), Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, MAGIC (telescope), Gamma-ray burst, Energy (signal processing), Cherenkov radiation, Afterglow
Abstract

On 14th January 2019, the MAGIC collaboration achieved the first significant detection at TeV energies of a gamma-ray burst (GRB), namely GRB 190114C. This observation sets the first experimental proof of very high energy (VHE, >~100 GeV) gamma-ray emission in GRBs, after more than 50 years from the first GRB detection and many searches with Cherenkov telescopes in the last decades. The data collected by MAGIC and by more than 20 other ground-based and space-borne instruments, spanning 17 orders of magnitude in energy, revealed a new GeV-TeV emission component in the GRB afterglow. This unprecedented multi-wavelength dataset, including VHE data for the first time, allowed a detailed study of the broadband emission. A one-zone synchrotron-self Compton scenario with internal $\gamma$-$\gamma$ absorption could be used to describe the broadband emission, using parameters compatible with those found in previous studies of GRB afterglows below the GeV energy range. This detection opened a new era in the studies of GRBs, leading to new questions such as the universality of TeV emission in different types of GRBs. In this contribution, we will present the GRB follow-up program performed by the MAGIC collaboration, which started more than 15 years ago. We will highlight the results on GRB 190114C, discuss the implications for GRB physics, and report the latest developments and the prospects for future observations of GRBs with the MAGIC telescopes.

Published
2021

6. Upper limits on the WIMP annihilation cross section from a joint analysis of dwarf spheroidal satellite galaxy observations with the MAGIC telescopes

Author

Maria-Isabel Bernardos, Lena Linhoff, Simona Paiano, Alice Donini, Alicia Fattorini, Takashi Saito, M. I. Martínez, L. Maraschi, Daniela Dorner, Francesco Dazzi, Daniel Kerszberg, Ryuji Takeishi, Elina Lindfors, Lara Nava, Yating Chai, Francesco Longo, Gaia Vanzo, D. M. Strom, Dominik Baack, Dario Hrupec, Stefan Cikota, Pawel Gliwny, Stefano Menchiari, Daniel Mazin, D. Dominis Prester, Kari Nilsson, Nicola Giglietto, Chiara Righi, John Hoang, Mosè Mariotti, Fabrizio Tavecchio, Juliane van Scherpenberg, Yukiho Kobayashi, Mitsunari Takahashi, Eduardo Colombo, Tjark Miener, Ciro Bigongiari, Jenni Jormanainen, Tihomir Surić, Christian Fruck, Javier Rico, Tokonatsu Yamamoto, David Paneque, Victoria Moreno, Vitaly Neustroev, Lluis Font, Elia Do Souto Espiñeira, Darko Zarić, Matteo Cerruti, Bernardo Machado de Oliveira Fraga, Stefano Covino, Petar Temnikov, Jelena Strišković, Chaitanya Priyadarshi, Manuela Mallamaci, Yasushi Fukazawa, Michele Palatiello, Koji Noda, Saverio Lombardi, Marc Ribó, Elisa Bernardini, Marcel Strzys, Alessandro De Angelis, Martin Makariev, Giacomo Bonnoli, Luca Tosti, Andrea Rugliancich, Manuel Delfino, Ievgen Vovk, P. G. Prada Moroni, Satoshi Fukami, Ulisses Barres de Almeida, Oscar Blanch, Markus Garczarczyk, Giovanni Ceribella, Iva Šnidarić, Simone Mender, Javier Herrera, Josefa González, Sargis Gasparyan, Marina Manganaro, Valerio D'Elia, Thomas Schweizer, Hidetoshi Kubo, Tomohiro Inada, Karl Mannheim, Andrés Baquero, Masahiro Teshima, Julian Sitarek, Sidika Merve Colak, Ana Babić, Katsuaki Asano, Elena Moretti, Tomohiko Oka, Louis Antonelli, Konstancja Satalecka, Alexander Hahn, Michele Doro, Abelardo Moralejo, Monica Vazquez Acosta, Daniela Hadasch, Yuki Iwamura, Alicia López-Oramas, Wolfgang Rhode, Stefano Ansoldi, Maria Victoria Fonseca, Giovanni Busetto, Serena Loporchio, Marine Pihet, G. Maneva, Daniel Morcuende, Jose Luis Contreras, Yoshiki Ohtani, Kyoshi Nishijima, Riccardo Paoletti, Markus Gaug, Stefano Truzzi, Kazuma Ishio, Juan Cortina, Santiago Ubach, Nikola Godinovic, Lorenzo Bellizzi, Jordi Delgado, Bernd Schleicher, Takeshi Nakamori, Adrian Biland, Edgar Molina, Marie Karjalainen, Barbara De Lotto, Hendrik Bökenkamp, Vandad Fallah Ramazani, Massimo Persic, Pablo Peñil, Josep M. Paredes, Antonio Stamerra, Camilla Maggio, Kevin Schmidt, Junko Kushida, Lovro Pavletić, Saša Mićanović, Ivana Batković, D. Ninci, Roberto Carosi, Cosimo Nigro, Davide Miceli, Alessia Spolon, Sofia Ventura, Giacomo D'Amico, Léa Jouvin, Carolin Wunderlich, Vassil Verguilov, Shunsuke Sakurai, Jarred Gershon Green, Dominik Elsaesser, Razmik Mirzoyan, Damir Lelas, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Zeljka Bosnjak, Victor A. Acciari, Ivica Puljak, Moritz Hütten, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ramon J. García López, Ruben Lopez-Coto, Irene Jiménez Martínez, Wrijupan Bhattacharyya, Jose Miguel Miranda, Alessandra Lamastra, Vincenzo Vitale, Alessio Berti, Pratik Majumdar, Yusuke Suda, Francesco Leone, Paolo Da Vela, Axel Arbet Engels, David H. Green, Martin Will, Jorge Otero-Santos, Carlo Vigorito, Seiya Nozaki, Juan Abel Barrio, Narek Sahakyan, Carlos Delgado Mendez, Davide Depaoli, Leonardo Di Venere, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Manuel Artero, Tomislav Terzić, Elisa Prandini, and Ashot Chilingarian

Subjects
Physics, Annihilation, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Coma (optics), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Draco (constellation), WIMP, Satellite galaxy, MAGIC (telescope), Astrophysics::Galaxy Astrophysics, Cherenkov radiation
Abstract

Dwarf spheroidal galaxies (dSphs) are among the best candidates to perform indirect searches for DM, having the highest known mass-to-light ratio and being free of astrophysical gamma-ray emitting sources. The Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes, located on the Canary Island of La Palma, have observed a fair amount of optimal dSphs in the recent years. This is the outcome of diversifying the observation strategy in order to avoid possible biases in target selection and to improve previous results. In this contribution we will report on new MAGIC results obtained from 52.1 hours of observation of the Draco dSph in 2018 and 49.5 hours of the Coma Berenices dSph in 2019. We will also present the results of a joint analysis of Draco and Coma Berenices dSphs with other dSphs observed by MAGIC so far. The selected dataset accounts for 354.4 hours of good quality data, resulting in one of the largest dSphs samples ever collected by an array of Cherenkov telescopes. This allows us to derive the most constraining limits from dSphs, among Cherenkov telescopes, on the WIMP annihilation cross section for different annihilation channels in the WIMP mass range 70 GeV to 100 TeV.

Published
2021

7. Multiwavelength observations in 2019-2020 of a new very-high-energy gamma-ray emitter: the flat spectrum radio quasar QSO B1420+326

Author

Davide Depaoli, Davide Miceli, Alessia Spolon, Léa Jouvin, Leonardo Di Venere, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, John Hoang, Vassil Verguilov, Francesco Longo, Jordi Delgado, Vandad Fallah Ramazani, Josep M. Paredes, Alexander Hahn, Luca Tosti, Antonio Stamerra, Kevin Schmidt, Valerio D'Elia, Marine Pihet, Roberto Angioni, G. Maneva, Louis Antonelli, Massimo Persic, Alessio Berti, Giacomo D'Amico, Wrijupan Bhattacharyya, Junko Kushida, Carolin Wunderlich, D. Dominis Prester, Lovro Pavletić, Katsuaki Asano, Markus Garczarczyk, Yusuke Suda, Elia Do Souto Espiñeira, Abelardo Moralejo, Victor A. Acciari, Axel Arbet Engels, Jenni Jormanainen, Monica Orienti, Maria Victoria Fonseca, Moritz Hütten, Takashi Saito, Carlo Vigorito, Stefano Menchiari, Bernardo Machado de Oliveira Fraga, Maria-Isabel Bernardos, Daniela Dorner, Adrian Biland, Jarred Gershon Green, Kazuma Ishio, Gaia Vanzo, Yating Chai, Stefan Cikota, Nikola Godinovic, Alessandra Lamastra, Chiara Righi, Dominik Baack, Martin Makariev, Dario Hrupec, Oscar Blanch, Lena Linhoff, Michele Palatiello, Vincenzo Vitale, Roberto Carosi, Cosimo Nigro, Yukiho Kobayashi, Mitsunari Takahashi, Petar Temnikov, Pratik Majumdar, Elisa Prandini, Lluis Font, Koji Noda, Simona Paiano, Sofia Ventura, Alicia Fattorini, Pawel Gliwny, Nicola Giglietto, Elisa Bernardini, Daniel Kerszberg, Stefano Covino, Juliane van Scherpenberg, Francesco Leone, Chaitanya Priyadarshi, Dominik Elsaesser, Manuel Artero, Razmik Mirzoyan, Marcel Strzys, Martin Will, Jorge Otero-Santos, Julian Sitarek, Marcos López-Moya, Tomislav Terzić, Takeshi Nakamori, Ashot Chilingarian, Yuki Iwamura, Marc Ribó, Josefa González, Tihomir Surić, Wlodek Bednarek, Simone Mender, Javier Herrera, Damir Lelas, Barbara De Lotto, Federico Di Pierro, Daniela Hadasch, Ruben Lopez-Coto, Ievgen Vovk, Seiya Nozaki, Svetlana G. Jorstad, Iva Šnidarić, Camilla Maggio, Victoria Moreno, Hidetoshi Kubo, Tomohiro Inada, Irene Jiménez Martínez, Santiago Ubach, M. I. Martínez, Yoshiki Ohtani, Lea Heckmann, Christian Fruck, Francesco Gabriele Saturni, Jose Miguel Miranda, Bernd Schleicher, Darko Zarić, Karl Mannheim, Paolo Da Vela, Satoshi Fukami, David H. Green, Thomas Schweizer, Dorota Sobczyńska, Zeljka Bosnjak, Alicia López-Oramas, Stefano Ansoldi, Juan Abel Barrio, Edgar Molina, Narek Sahakyan, Masahiro Teshima, Shunsuke Sakurai, Riccardo Paoletti, Markus Gaug, Marina Manganaro, Giovanni Ceribella, Stefano Truzzi, Manuela Mallamaci, F. D'Ammando, Pablo Peñil, Alessandro De Angelis, Matteo Cerruti, Carlos Delgado Mendez, Saša Mićanović, Elena Moretti, Ivica Puljak, Ivana Batković, Giacomo Bonnoli, Konstancja Satalecka, P. G. Prada Moroni, Yasushi Fukazawa, Michele Doro, Tomohiko Oka, Kyoshi Nishijima, Sidika Merve Colak, Monica Vazquez Acosta, Sargis Gasparyan, Andrés Baquero, Ramon J. García López, Tjark Miener, David Paneque, Wolfgang Rhode, Francesco Dazzi, Giovanni Busetto, Jelena Strišković, L. Maraschi, Elina Lindfors, Lorenzo Bellizzi, Daniel Mazin, Ciro Bigongiari, Marie Karjalainen, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Daniel Morcuende, Jose Luis Contreras, Juan Cortina, Hendrik Bökenkamp, Serena Loporchio, Manuel Delfino, Ulisses Barres de Almeida, Alice Donini, Ana Babić, Lara Nava, Fabrizio Tavecchio, Eduardo Colombo, Mosè Mariotti, Saverio Lombardi, and Andrea Rugliancich

Subjects
Physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Quasar, Optical polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, law.invention, Luminosity, law, Spectral energy distribution, Spectroscopy, Equivalent width, Astrophysics::Galaxy Astrophysics, Flare
Abstract

The flat-spectrum radio quasar QSO B1420+326 underwent an enhanced $\gamma$-ray flux state seen by Fermi-LAT at the turn of 2019/2020. Compared to the low state both the position and luminosity of the two spectral energy distribution peaks changed by at least two orders of magnitude. The high state resulted in the discovery of the very-high-energy (>100 GeV) $\gamma$-ray emission from the source by the MAGIC telescopes. The organized multiwavelength campaign allow us to trace the broadband emission of the source through different phases of the flaring activity. The source was observed by 20 instruments in radio, near-infrared, optical, ultra-violet, X-ray and $\gamma$-ray bands. We use dedicated optical spectroscopy results to estimate the accretion disc and the dust torus luminosity. The optical spectroscopy shows a prominent FeII bump with flux evolving together with the continuum emission and a MgII line with varying equivalent width. The $\gamma$-ray flare was accompanied by a rotation of the optical polarization vector and emission of a new superluminal radio knot. We model spectral energy distributions in different flare phases in the framework of combined synchrotron-self-Compton and external Compton scenario in which the shape of the electron energy distribution is determined from cooling processes.

Published
2021

8. Very-high-energy gamma-ray emission from {GRB} 201216C detected by {MAGIC}

Author

Ramon J. García López, Marie Karjalainen, Alessio Berti, Takeshi Nakamori, Manuel Artero, Dominik Elsaesser, Razmik Mirzoyan, Damir Lelas, Barbara De Lotto, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Axel Arbet Engels, Manuel Delfino, Ulisses Barres de Almeida, Javier Rico, Tokonatsu Yamamoto, Camilla Maggio, Lorenzo Bellizzi, Lena Linhoff, Alice Donini, Juliane van Scherpenberg, Tomislav Terzić, Stefano Covino, Tihomir Surić, Dario Hrupec, D. Dominis Prester, Vitaly Neustroev, Daniela Dorner, Gaia Vanzo, Stefano Menchiari, Davide Depaoli, Mitsunari Takahashi, Pratik Majumdar, Kazuma Ishio, Luca Tosti, Chiara Righi, Ana Babić, Lara Nava, Martin Will, Jenni Jormanainen, Roberto Carosi, M. I. Martínez, Ciro Bigongiari, Valerio D'Elia, Alessandra Lamastra, Karl Mannheim, Katsuaki Asano, Yating Chai, Vincenzo Vitale, Jorge Otero-Santos, Francesco Longo, Shunsuke Sakurai, Petar Temnikov, Daniel Kerszberg, Fabrizio Tavecchio, Matteo Cerruti, Elisa Prandini, Bernardo Machado de Oliveira Fraga, G. Maneva, Chaitanya Priyadarshi, Stefan Cikota, Pawel Gliwny, Manuela Mallamaci, Nicola Giglietto, Eduardo Colombo, Seiya Nozaki, Koji Noda, Giovanni Ceribella, Elisa Bernardini, Daniel Morcuende, Jose Luis Contreras, Leonardo Di Venere, Alicia López-Oramas, Alessandro De Angelis, Maria Victoria Fonseca, Tjark Miener, Abelardo Moralejo, Sargis Gasparyan, Juan Cortina, Marc Ribó, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Yasushi Fukazawa, Victoria Moreno, David Paneque, Nikola Godinovic, Massimo Persic, Wolfgang Rhode, Francesco Leone, Giovanni Busetto, Adrian Biland, Santiago Ubach, Juan Abel Barrio, Narek Sahakyan, Elia Do Souto Espiñeira, Stefano Truzzi, Pablo Peñil, Ashot Chilingarian, Hidetoshi Kubo, Tomohiro Inada, Giacomo Bonnoli, Serena Loporchio, Hendrik Bökenkamp, Takashi Saito, Josefa González, John Hoang, Davide Miceli, Tomohiko Oka, Cosimo Nigro, Carlos Delgado Mendez, Lluis Font, Saša Mićanović, Ivana Batković, Dominik Baack, Satoshi Fukami, Bernd Schleicher, P. G. Prada Moroni, Jelena Strišković, Kyoshi Nishijima, Maria-Isabel Bernardos, Edgar Molina, Yukiho Kobayashi, Martin Makariev, Oscar Blanch, Yusuke Suda, Thomas Schweizer, Sofia Ventura, Marcos López-Moya, Ryuji Takeishi, Christian Fruck, L. Maraschi, Elina Lindfors, Stefano Ansoldi, Wlodek Bednarek, Federico Di Pierro, D. M. Strom, Kari Nilsson, Marcel Strzys, Carlo Vigorito, Masahiro Teshima, Alessia Spolon, Léa Jouvin, Vassil Verguilov, Riccardo Paoletti, Daniel Mazin, Simone Mender, Javier Herrera, Markus Gaug, Ievgen Vovk, Alexander Hahn, Giacomo D'Amico, Ruben Lopez-Coto, Andrés Baquero, Francesco Dazzi, Jordi Delgado, Vandad Fallah Ramazani, Josep M. Paredes, Jarred Gershon Green, Marina Manganaro, Marine Pihet, Yuki Iwamura, Antonio Stamerra, Ž. Bošnjak, Markus Garczarczyk, Irene Jiménez Martínez, Elena Moretti, Simona Paiano, Kevin Schmidt, Konstancja Satalecka, Michele Doro, Alicia Fattorini, Jose Miguel Miranda, Michele Palatiello, Junko Kushida, Lovro Pavletić, Paolo Da Vela, Iva Šnidarić, Julian Sitarek, David H. Green, Daniela Hadasch, Yoshiki Ohtani, Louis Antonelli, Carolin Wunderlich, Victor A. Acciari, Moritz Hütten, Wrijupan Bhattacharyya, Darko Zarić, Mosè Mariotti, Saverio Lombardi, Sidika Merve Colak, Monica Vazquez Acosta, Andrea Rugliancich, and Ivica Puljak

Subjects
Physics, High energy, Range (particle radiation), Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Astrophysics, MAGIC (telescope), Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, Gamma-ray burst, Redshift
Abstract

Gamma-ray bursts (GRBs) are the most energetic phenomena in the Universe. Many aspects of GRB physics are still under debate, such as the origin of their gamma-ray emission above the GeV energy range. In 2019, MAGIC detected TeV gamma rays from the long GRB 190114C, whose emission can be well explained by synchrotron-self Compton emission by relativistic electrons. However, it is still unclear whether such a process is common in GRBs, given the reduced number of GRBs detected until now at the very high energies (VHE). GRB 201216C is a long GRB and is the second one detected by MAGIC in this energy range. After receiving the alert provided by Swift-BAT, MAGIC automatically slewed to the GRB position, starting observations 56 seconds after the GRB onset. In the offline analyses of the collected data, we confirmed the detection of gamma-ray emission with a significance above 5 sigma. Following measurements from optical facilities, the redshift of this GRB was estimated to be 𝑧� = 1.1. This makes GRB 201216C the most distant object ever detected by ground-based gamma-ray telescopes. In this contribution we will show the analysis results of the MAGIC data, also in comparison with past detected GRBs in the same energy range. Finally, accounting for available multi-wavelength observations, we will comment on the possible origin of the VHE emission detected by MAGIC., PoS: Proceedings of Science, 395, ISSN:1824-8039, 37th International Cosmic Ray Conference (ICRC 2021)

Published
2021

9. Resolving the origin of very-high-energy gamma-ray emission from the PeVatron candidate SNR G106.3+2.7 using MAGIC telescopes

Author

M. I. Martínez, Giacomo D'Amico, Manuel Artero, Christian Fruck, Manuel Delfino, Ulisses Barres de Almeida, Jarred Gershon Green, Jordi Delgado, Tomislav Terzić, Lluis Font, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ana Babić, Ruben Lopez-Coto, Lena Linhoff, Marcel Strzys, Kevin Schmidt, Irene Jiménez Martínez, Davide Depaoli, Sargis Gasparyan, Simone Mender, Javier Herrera, Jose Miguel Miranda, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Daniel Kerszberg, Juan Abel Barrio, Lorenzo Bellizzi, Luca Tosti, Wolfgang Rhode, Junko Kushida, Giovanni Busetto, Paolo Da Vela, Lovro Pavletić, Narek Sahakyan, Serena Loporchio, Takeshi Nakamori, Francesco Longo, Barbara De Lotto, Abelardo Moralejo, Manuela Mallamaci, Leonardo Di Venere, Valerio D'Elia, Alessandro De Angelis, David H. Green, Camilla Maggio, Marina Manganaro, Jürgen Besenrieder, Stefano Truzzi, G. Maneva, Carlos Delgado Mendez, Pablo Peñil, Francesco Giordano, Antonio Tutone, Adrian Biland, Alexander Hahn, L. Maraschi, Elina Lindfors, Wrijupan Bhattacharyya, Daniel Mazin, Elia Do Souto Espiñeira, Elena Moretti, Yuki Iwamura, Stefano Covino, Saša Mićanović, Thomas Schweizer, Stefano Menchiari, Daniela Dorner, Giovanni Ceribella, Gaia Vanzo, Marine Pihet, Konstancja Satalecka, Stefano Ansoldi, Marc Ribó, Michele Doro, Ivana Batković, Riccardo Paoletti, Martin Makariev, Chiara Righi, Ryuji Takeishi, D. M. Strom, Kari Nilsson, Yating Chai, Oscar Blanch, Markus Gaug, Stefan Cikota, Maria-Isabel Bernardos, Michele Palatiello, Tomohiko Oka, Alice Donini, Petar Temnikov, Mosè Mariotti, Koji Noda, Pratik Majumdar, Elisa Bernardini, Marie Karjalainen, Yusuke Suda, Takashi Saito, D. Dominis Prester, Pawel Gliwny, Nicola Giglietto, Cosimo Nigro, Kyoshi Nishijima, Hidetoshi Kubo, Tomohiro Inada, Bernd Schleicher, Iva Šnidarić, Markus Garczarczyk, Martin Will, Vandad Fallah Ramazani, Simona Paiano, Josep M. Paredes, Jenni Jormanainen, Carlo Vigorito, Dominik Baack, Lara Nava, Alessandra Lamastra, Chaitanya Priyadarshi, Edgar Molina, Vincenzo Vitale, Antonio Stamerra, Yukiho Kobayashi, Jorge Otero-Santos, Fabrizio Tavecchio, Louis Antonelli, Josefa González, Bernardo Machado de Oliveira Fraga, Alicia Fattorini, Sofia Ventura, Eduardo Colombo, Victoria Moreno, Satoshi Fukami, Massimo Persic, Darko Zarić, Seiya Nozaki, Daniel Morcuende, Jose Luis Contreras, Carolin Wunderlich, Francesco Leone, Juan Cortina, Masahiro Teshima, Tihomir Surić, Saverio Lombardi, Hendrik Bökenkamp, Tjark Miener, David Paneque, Ciro Bigongiari, Jelena Strišković, Andrea Rugliancich, Ivica Puljak, Santiago Ubach, Karl Mannheim, Victor A. Acciari, Giacomo Bonnoli, Alicia López-Oramas, Dario Hrupec, Sidika Merve Colak, Monica Vazquez Acosta, P. G. Prada Moroni, Moritz Hütten, Roberto Carosi, Shunsuke Sakurai, Mitsunari Takahashi, Alessio Berti, Kazuma Ishio, Andrés Baquero, Ramon J. García López, John Hoang, Davide Miceli, Axel Arbet Engels, Elisa Prandini, Alessia Spolon, Léa Jouvin, Dominik Elsaesser, Razmik Mirzoyan, Juliane van Scherpenberg, Ashot Chilingarian, Damir Lelas, Vassil Verguilov, Lea Heckmann, Francesco Gabriele Saturni, Dorota Sobczyńska, Zeljka Bosnjak, Katsuaki Asano, Maria Victoria Fonseca, Francesco Dazzi, Ievgen Vovk, Nikola Godinovic, Matteo Cerruti, Yasushi Fukazawa, Julian Sitarek, Daniela Hadasch, and Yoshiki Ohtani

Subjects
Physics, Air shower, Pulsar, Astrophysics::High Energy Astrophysical Phenomena, Continuum (design consultancy), Gamma ray, Angular resolution, Astrophysics::Cosmology and Extragalactic Astrophysics, MAGIC (telescope), Astrophysics, Supernova remnant, Pulsar wind nebula, Astrophysics::Galaxy Astrophysics
Abstract

The supernova remnant (SNR) G106.3+2.7 associated with a 100 TeV gamma-ray source reported by HAWC, Tibet AS$\gamma$, and LHAASO Collaborations is one of the promising PeVatron candidates. Because the SNR contains an energetic pulsar wind nebula (PWN) dubbed Boomerang powered by the pulsar PSR J2229+6114, it is unclear whether the gamma-ray emission originates from the SNR or PWN complex and whether it is caused by hadronic or leptonic processes. We observed gamma rays above 200 GeV in the vicinity of the SNR G106.3+2.7 using the MAGIC telescopes for total $\sim120$ hours between May 2017 and August 2019 with an angular resolution of 0.07--0.10 degrees, achieving an unprecedented exposure for this object at these energies. An extended gamma-ray emission spatially correlated with the radio continuum emission at the head and tail of SNR G106.3+2.7 was detected using the MAGIC telescopes. We found a significant gamma-ray emission above 5.65 TeV only from the SNR tail region, while no significant emission in the same band is found at the SNR head region containing the Boomerang PWN. Therefore, the gamma rays above 10 TeV detected with the air shower experiments are, likely, mainly emitted from the SNR tail region. In this presentation, we discuss the morphology of the gamma-ray emission from this complex region and attempt self-consistent multi-wavelength modeling of the energy spectrum.

10. Observation of a relatively low luminosity long duration GRB 201015A by the MAGIC telescopes

Author

Dominik Elsaesser, Razmik Mirzoyan, Javier Rico, Tokonatsu Yamamoto, Vitaly Neustroev, Damir Lelas, Lea Heckmann, Francesco Gabriele Saturni, Alexander Hahn, Dorota Sobczyńska, Zeljka Bosnjak, Dario Hrupec, Mitsunari Takahashi, Luca Tosti, Manuel Delfino, Ulisses Barres de Almeida, Valerio D'Elia, G. Maneva, Ana Babić, Michele Palatiello, Marine Pihet, Mosè Mariotti, Kazuma Ishio, Ievgen Vovk, Matteo Cerruti, Jordi Delgado, Yusuke Suda, Adrian Biland, Abelardo Moralejo, Yasushi Fukazawa, D. Dominis Prester, Lena Linhoff, Elisa Prandini, Yuki Iwamura, Kevin Schmidt, Carlo Vigorito, Francesco Longo, Stefano Truzzi, Juliane van Scherpenberg, Ivica Puljak, Jenni Jormanainen, Alice Donini, Satoshi Fukami, Davide Miceli, Saverio Lombardi, Daniel Morcuende, Davide Depaoli, Jose Luis Contreras, Bernardo Machado de Oliveira Fraga, Ashot Chilingarian, Vandad Fallah Ramazani, Christian Fruck, Josep M. Paredes, Antonio Stamerra, Andrea Rugliancich, Juan Cortina, Iva Šnidarić, Ramon J. García López, L. Maraschi, Wrijupan Bhattacharyya, Pratik Majumdar, Elina Lindfors, Pablo Peñil, M. I. Martínez, Masahiro Teshima, Alessia Spolon, Léa Jouvin, Hendrik Bökenkamp, Leonardo Di Venere, Daniel Mazin, Daniela Dorner, Gaia Vanzo, Markus Garczarczyk, Jürgen Besenrieder, Francesco Giordano, Antonio Tutone, Elia Do Souto Espiñeira, Chiara Righi, Giacomo Bonnoli, Takashi Saito, P. G. Prada Moroni, Bernd Schleicher, Edgar Molina, Martin Will, Saša Mićanović, Junko Kushida, Lovro Pavletić, Jorge Otero-Santos, Lara Nava, Marie Karjalainen, Dominik Baack, Ryuji Takeishi, Petar Temnikov, Koji Noda, Josefa González, D. M. Strom, Kari Nilsson, Ivana Batković, Manuela Mallamaci, Louis Antonelli, Yukiho Kobayashi, Elisa Bernardini, Chaitanya Priyadarshi, Alessandro De Angelis, Stefano Covino, Thomas Schweizer, Seiya Nozaki, Stefano Ansoldi, Riccardo Paoletti, Takeshi Nakamori, Vassil Verguilov, Martin Makariev, Oscar Blanch, Francesco Dazzi, Fabrizio Tavecchio, Markus Gaug, Barbara De Lotto, Manuel Artero, Carolin Wunderlich, Camilla Maggio, Eduardo Colombo, Tjark Miener, David Paneque, Giovanni Ceribella, Tomislav Terzić, Santiago Ubach, Juan Abel Barrio, Tomohiko Oka, Narek Sahakyan, Maria-Isabel Bernardos, Jelena Strišković, Kenta Terauchi, Ciro Bigongiari, Daniel Kerszberg, Kyoshi Nishijima, Marina Manganaro, Shunsuke Sakurai, Carlos Delgado Mendez, Victor A. Acciari, Elena Moretti, Julian Sitarek, Simona Paiano, Konstancja Satalecka, Alicia Fattorini, Michele Doro, Marc Ribó, Serena Loporchio, Moritz Hütten, Hidetoshi Kubo, Tomohiro Inada, Daniela Hadasch, Roberto Carosi, Yoshiki Ohtani, Andrés Baquero, Massimo Persic, Stefano Menchiari, Alessandra Lamastra, Vincenzo Vitale, Lluis Font, Francesco Leone, Marcos López-Moya, Wlodek Bednarek, Federico Di Pierro, Ruben Lopez-Coto, Irene Jiménez Martínez, Jose Miguel Miranda, Paolo Da Vela, David H. Green, Marcel Strzys, Katsuaki Asano, Maria Victoria Fonseca, Sidika Merve Colak, Monica Vazquez Acosta, Simone Mender, Javier Herrera, Yating Chai, Stefan Cikota, Pawel Gliwny, Nicola Giglietto, Nikola Godinovic, Victoria Moreno, Darko Zarić, John Hoang, Lorenzo Bellizzi, Giacomo D'Amico, Jarred Gershon Green, Cosimo Nigro, Sofia Ventura, Sargis Gasparyan, Alessio Berti, Wolfgang Rhode, Giovanni Busetto, Axel Arbet Engels, Tihomir Surić, Karl Mannheim, and Alicia López-Oramas

Subjects
Physics, education.field_of_study, High energy, Astrophysics::High Energy Astrophysical Phenomena, Population, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Redshift, Luminosity, Supernova, MAGIC (telescope), Gamma-ray burst, education, Short duration
Abstract

Starting from the first announcement of unequivocal detection of very high energy (VHE) emission from a gamma-ray burst (GRB) by the MAGIC telescopes (GRB 190114C), four additional detections of VHE emission from GRBs by ground-based telescopes were reported. These observations have revealed a new, energetic component that has become an additional probe to explore GRB physics. In order to deepen our understanding of the origin of this new component, and in general of the origin of radiation from GRBs, further observations by VHE instruments are crucial. In this work we report fast follow-up observations by the MAGIC telescopes of GRB 201015A, a GRB detected by the Swift/BAT. As measured by BAT, the prompt emission lasted 9.8 +/- 3.5 seconds, suggesting that this GRB belongs to the class of long events. This was later confirmed by optical observations, which allowed to measure the redshift (𝑧 = 0.42) and found the associated type Ic-BL supernova. Having a prompt isotropic-equivalent energy of 𝐸iso ∼10^{50} erg, this GRB is a relatively low energy event as compared to the population of long GRBs. Observations with the MAGIC telescopes started about 30 seconds after the GRB onset and were performed under good observational conditions. The accurate analysis of the MAGIC data reveals a strong hint of detection and implies a significant energy release in the TeV range, smaller but comparable with that of the prompt emission in the keV-MeV band.

Catalog

Books, media, physical & digital resources
See catalog results