Related papers: H.E.S.S. multi-messenger observations

TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S

We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have been obtained starting only 5.3h after GW170817. The H.E.S.S.…

High Energy Astrophysical Phenomena · Physics 2017-11-30 H. E. S. S. Collaboration , : , H. Abdalla , A. Abramowski , F. Aharonian , F. Ait Benkhali , E. O. Angüner , M. Arakawa , M. Arrieta , P. Aubert , M. Backes , A. Balzer , M. Barnard , Y. Becherini , J. Becker Tjus , D. Berge , S. Bernhard , K. Bernlöhr , R. Blackwell , M. Böttcher , C. Boisson , J. Bolmont , S. Bonnefoy , P. Bordas , J. Bregeon , F. Brun , P. Brun , M. Bryan , M. Büchele , T. Bulik , M. Capasso , S. Caroff , A. Carosi , S. Casanova , M. Cerruti , N. Chakraborty , R. C. G. Chaves , A. Chen , J. Chevalier , S. Colafrancesco , B. Condon , J. Conrad , I. D. Davids , J. Decock , C. Deil , J. Devin , P. deWilt , L. Dirson , A. Djannati-Ataï , A. Donath , L. O'C. Drury , K. Dutson , J. Dyks , T. Edwards , K. Egberts , G. Emery , J. -P. Ernenwein , S. Eschbach , C. Farnier , S. Fegan , M. V. Fernandes , A. Fiasson , G. Fontaine , S. Funk , M. Füßling , S. Gabici , Y. A. Gallant , T. Garrigoux , F. Gaté , G. Giavitto , B. Giebels , D. Glawion , J. F. Glicenstein , D. Gottschall , M. -H. Grondin , J. Hahn , M. Haupt , J. Hawkes , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , W. Hofmann , C. Hoischen , T. L. Holch , M. Holler , D. Horns , A. Ivascenko , H. Iwasaki , A. Jacholkowska , M. Jamrozy , D. Jankowsky , F. Jankowsky , M. Jingo , L. Jouvin , I. Jung-Richardt , M. A. Kastendieck , K. Katarzyński , M. Katsuragawa , U. Katz , D. Kerszberg , D. Khangulyan , B. Khélifi , J. King , S. Klepser , D. Klochkov , W. Kluźniak , Nu. Komin , K. Kosack , S. Krakau , M. Kraus , P. P. Krüger , H. Laffon , G. Lamanna , J. Lau , J. -P. Lees , J. Lefaucheur , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , E. Leser , T. Lohse , M. Lorentz , R. Liu , R. López-Coto , I. Lypova , D. Malyshev , V. Marandon , A. Marcowith , C. Mariaud , R. Marx , G. Maurin , N. Maxted , M. Mayer , P. J. Meintjes , M. Meyer , A. M. W. Mitchell , R. Moderski , M. Mohamed , L. Mohrmann , K. Morå , E. Moulin , T. Murach , S. Nakashima , M. de Naurois , H. Ndiyavala , F. Niederwanger , J. Niemiec , L. Oakes , P. O'Brien , H. Odaka , S. Ohm , M. Ostrowski , I. Oya , M. Padovani , M. Panter , R. D. Parsons , N. W. Pekeur , G. Pelletier , C. Perennes , P. -O. Petrucci , B. Peyaud , Q. Piel , S. Pita , V. Poireau , H. Poon , D. Prokhorov , H. Prokoph , G. Pühlhofer , M. Punch , A. Quirrenbach , S. Raab , R. Rauth , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , L. Rinchiuso , C. Romoli , G. Rowell , B. Rudak , C. B. Rulten , V. Sahakian , S. Saito , D. A. Sanchez , A. Santangelo , M. Sasaki , R. Schlickeiser , F. Schüssler , A. Schulz , U. Schwanke , S. Schwemmer , M. Seglar-Arroyo , M. Settimo , A. S. Seyffert , N. Shafi , I. Shilon , K. Shiningayamwe , R. Simoni , H. Sol , F. Spanier , M. Spir-Jacob , Ł. Stawarz , R. Steenkamp , C. Stegmann , C. Steppa , I. Sushch , T. Takahashi , J. -P. Tavernet , T. Tavernier , A. M. Taylor , R. Terrier , L. Tibaldo , D. Tiziani , M. Tluczykont , C. Trichard , M. Tsirou , N. Tsuji , R. Tuffs , Y. Uchiyama , D. J. van der Walt , C. van Eldik , C. van Rensburg , B. van Soelen , G. Vasileiadis , J. Veh , C. Venter , A. Viana , P. Vincent , J. Vink , F. Voisin , H. J. Völk , T. Vuillaume , Z. Wadiasingh , S. J. Wagner , P. Wagner , R. M. Wagner , R. White , A. Wierzcholska , P. Willmann , A. Wörnlein , D. Wouters , R. Yang , D. Zaborov , M. Zacharias , R. Zanin , A. A. Zdziarski , A. Zech , F. Zefi , A. Ziegler , J. Zorn , N. Żywucka

H.E.S.S. searches for TeV gamma rays associated to high-energy neutrinos

The detection of an astrophysical flux of high-energy neutrinos by IceCube is a major step forward in the search for the origin of cosmic rays, as this emission is expected to originate in hadronic interactions taking place in or near…

High Energy Astrophysical Phenomena · Physics 2019-08-23 Fabian Schüssler , Halim Ashkar , Michael Backes , Kathrin Egberts , Francois Brun , Matthias Füßling , Clemens Hoischen , Jean-Philippe Lenain , Iryna Lypova , Stefan Ohm , Dan Parsons , Carlo Romoli , Monica Seglar-Arroyo , Michael Zacharias , Andreas Zech

Chasing Gamma-Ray Signals from Binary Neutron Star Coalescences with the Cherenkov Telescope Array: Prospects and Observing Strategies

The detection of gravitational waves (GWs) from a binary neutron star (BNS) merger by Advanced LIGO and Advanced Virgo (GW170817), together with its electromagnetic counterpart, the short gamma-ray burst GRB~170817A, heralded the birth of…

High Energy Astrophysical Phenomena · Physics 2026-04-13 S. Abe , J. Abhir , A. Abhishek , F. Acero , A. Acharyya , R. Adam , A. Aguasca-Cabot , I. Agudo , I. Albanese , J. Alfaro , C. Alispach , R. Alves Batista , E. Amato , G. Ambrosi , D. Ambrosino , F. Ambrosino , L. Angel , C. Aramo , A. Arbet-Engels , C. Arcaro , C. Arena , T. T. H. Arnesen , K. Asano , H. Ashkar , C. Bakshi , C. Balazs , M. Balbo , A. Baquero Larriva , V. Barbosa Martins , J. A. Barrio , C. Bartolini , I. Batkovic , R. Batzofin , N. Bavdaz , J. Becerra Gonzalez , G. Beck , W. Benbow , E. Bernardini , M. G. Bernardini , J. Bernete , A. Berti , B. Bertucci , V. Beshley , P. Bhattacharjee , S. Bhattacharyya , C. Bigongiari , A. Biland , E. Bissaldi , M. Bla\ na , O. Blanch , J. Blazek , C. Boisson , G. Bonnoli , Z. Bosnjak , E. Bottacini , M. Bottcher , E. Bronzini , G. Brunelli , J. Buces Saez , A. Bulgarelli , T. Bulik , L. Burmistrov , P. G. Calisse , A. Campoy-Ordaz , B. K. Cantlay , G. Capasso , A. Caproni , R. Capuzzo-Dolcetta , M. Cardillo , S. Caroff , A. Carosi , E. Carquin , S. Casanova , E. Cascone , F. Cassol , G. Castignani , F. Catalani , D. Cerasole , M. Cerruti , P. M. Chadwick , S. Chaty , A. W. Chen , Y. Chen , M. Chernyakova , A. Chiavassa , G. Chon , J. Chudoba , L. Chytka , G. M. Cicciari , A. Cifuentes Santos , C. H. Coimbra Araujo , J. L. Contreras , B. Cornejo , J. Cortina , A. Costa , G. Cotter , P. Cristofari , O. Cuevas , Z. Curtis-Ginsberg , G. D'Amico , F. D'Ammando , P. D'Avanzo , P. Da Vela , L. David , F. Dazzi , M. de Bony de Lavergne , V. De Caprio , E. M. de Gouveia Dal Pino , B. De Lotto , M. de Naurois , V. de Souza , L. del Peral , M. V. del Valle , C. Delgado , D. della Volpe , D. Depaoli , A. Dettlaff , L. Di Bella , T. Di Girolamo , A. Di Piano , F. Di Pierro , R. Di Tria , L. Di Venere , R. Dima , A. Dinesh , E. Do Souto Espiñeira , D. Dominis Prester , A. Donini , D. Dorner , J. Dorner , M. Doro , L. Ducci , V. V. Dwarkadas , J. Ebr , C. Eckner , K. Egberts , L. Eisenberger , D. Elsasser , G. Emery , C. Escanuela Nieves , P. Escarate , M. Escobar Godoy , J. Escudero Pedrosa , P. Esposito , D. Falceta-Goncalves , E. Fedorova , S. Fegan , K. Feijen , Q. Feng , G. Ferrand , E. Fiandrini , A. Fiasson , M. Filipovic , V. Fioretti , L. Foffano , G. Fontaine , Y. Fukazawa , Y. Fukui , G. Galanti , G. Galaz , S. Gallozzi , V. Gammaldi , M. Garczarczyk , C. Gasbarra , D. Gasparrini , M. Gaug , G. Ghirlanda , J. G. Giesbrecht Formiga Paiva , N. Giglietto , F. Giordano , M. Giroletti , R. Giuffrida , J. -F. Glicenstein , P. Goldoni , J. M. Gonzalez , J. Goulart Coelho , T. Gradetzke , J. Granot , R. Grau , D. Green , J. G. Green , J. Grube , J. Hackfeld , D. Hadasch , A. Hahn , P. Hamal , W. Hanlon , S. Hara , V. M. Harvey , T. Hassan , K. Hayashi , L. Heckmann , N. Hiroshima , B. Hnatyk , R. Hnatyk , D. Horan , P. Horvath , D. Hrupec , S. Hussain , M. Iarlori , T. Inada , F. Incardona , S. Inoue , F. Iocco , A. Iuliano , Jahanvi , M. Jamrozy , P. Janecek , F. Jankowsky , C. Jarnot , I. Jaroschewski , P. Jean , V. Jilek , J. Jimenez Quiles , W. Jin , E. Joshi , J. Jurysek , V. Karas , H. Katagiri , J. Kataoka , S. Kaufmann , T. Keita , D. Kerszberg , M. Kherlakian , D. B. Kieda , R. Kissmann , T. Kleiner , Y. Kobayashi , K. Kohri , D. Kolar , N. Komin , A. Kong , K. Kosack , D. Kostunin , G. Kowal , H. Kubo , J. Kushida , A. La Barbera , N. La Palombara , B. Lacave , M. Lainez , A. Lamastra , J. Lapington , S. Lazarevic , J. -P. Lenain , F. Leone , E. Leonora , G. Leto , E. Lindfors , S. Lombardi , F. Longo , R. Lopez-Coto , M. Lopez-Moya , A. Lopez-Oramas , J. Lozano Bahilo , P. L. Luque-Escamilla , E. Lyard , O. Macias , P. Majumdar , M. Makariev , D. Mandat , S. Mangano , A. Marchetti , M. Mariotti , S. Markoff , I. Marquez , G. Marsella , O. Martinez , G. Maurin , D. Mazin , D. Melkumyan , S. Menon , E. Mestre , D. M. -A. Meyer , D. Miceli , M. Miceli , M. Michailidis , T. Miener , J. M. Miranda , R. Moderski , M. Molero , C. Molfese , E. Molina , K. Morik , A. Morselli , E. Moulin , A. L. Muller , K. Munari , T. Murach , A. Muraczewski , H. Muraishi , T. Nakamori , R. Nemmen , J. Niemiec , D. Nieto , M. Nievas Rosillo , L. Nikolic , K. Noda , D. Nosek , V. Novotny , S. Nozaki , A. Okumura , R. A. Ong , R. Orito , M. Orlandini , E. Orlando , S. Orlando , J. Otero-Santos , I. Oya , M. Ozlati Moghadam , A. Pagliaro , M. Palatiello , A. Pandey , G. Panebianco , D. Paneque , F. R. Pantaleo , J. M. Paredes , B. Patricelli , A. Pe'er , M. Pech , M. Pecimotika , M. Peresano , E. Peretti , J. Perez-Romero , G. Peron , F. Perrotta , M. Persic , O. Petruk , F. Pfeifle , E. Pietropaolo , M. Pihet , L. Pinchbeck , F. Pintore , G. Pirola , C. Pittori , F. Podobnik , M. Pohl , V. Pollet , G. Ponti , E. Prandini , G. Principe , M. Prouza , E. Pueschel , G. Puhlhofer , M. L. Pumo , M. Punch , A. Quirrenbach , S. Raino , R. Rando , S. Recchia , A. Reimer , O. Reimer , I. Reis , A. Reisenegger , W. Rhode , M. Ribo , C. Ricci , T. Richtler , J. Rico , L. Riitano , V. Rizi , E. Roache , G. Rodriguez Fernandez , P. Romano , G. Romeo , J. Rosado , A. Rosales de Leon , A. Roy , I. Sadeh , L. Saha , T. Saito , M. Sanchez-Conde , P. Sangiorgi , H. Sano , R. Santos-Lima , V. Sapienza , S. Sarkar , F. G. Saturni , A. Scherer , F. Schiavone , P. Schipani , P. Schovanek , F. Schussler , O. Sergijenko , H. Siejkowski , A. Simongini , V. Sliusar , A. Slowikowska , I. Sofia , H. Sol , S. Spinello , A. Stamerra , T. Starecki , R. Starling , T. Stolarczyk , Y. Suda , A. Sunny , T. Suomijarvi , R. Takeishi , S. J. Tanaka , F. Tavecchio , T. Tavernier , Y. Terada , M. Teshima , V. Testa , W. W. Tian , Y. Tian , L. Tibaldo , O. Tibolla , S. J. Tingay , C. J. Todero Peixoto , F. Tombesi , D. Tonev , F. Torradeflot , D. F. Torres , N. Tothill , G. Tovmassian , G. Tripodo , A. Trois , A. Tsiahina , A. Tutone , L. Vaclavek , M. Vacula , C. van Eldik , J. Vandenbroucke , V. Vassiliev , M. Vazquez Acosta , M. Vecchi , S. Vercellone , S. D. Vergani , I. Viale , A. Viana , A. Vigliano , J. Vignatti , C. F. Vigorito , J. Villanueva , E. Visentin , V. Voitsekhovskyi , S. Vorobiov , I. Vovk , T. Vuillaume , R. Walter , M. Wechakama , M. White , A. Wierzcholska , M. Will , F. Wohlleben , A. Wolter , F. Xotta , T. Yamamoto , R. Yamazaki , T. Yoshikoshi , M. Zacharias , G. Zaharijas , R. Zanmar Sanchez , D. Zavrtanik , M. Zavrtanik , A. Zech , V. I. Zhdanov , J. Zuriaga-Puig

GRB Observations with H.E.S.S. II

The High Energy Stereoscopic System (H.E.S.S.) has been searching for counterparts of Gamma Ray Bursts (GRBs) for many years. In 2012 the system was upgraded with a fifth $28$ m diameter telescope (CT5) which is equipped with faster motors…

High Energy Astrophysical Phenomena · Physics 2019-08-14 C. Hoischen , A. Blazer , E. Bissaldi , M. Füßling , T. Garrigoux , D. Gottschall , M. Holler , A. Mitchell , P. O'Brien , R. Parsons , G. Pühlhofer , G. Rowell , F. Schüssler , P. H. T. Tam , S. Wagner

Multimessenger astronomy driven by high-energy neutrinos

The possible connection between high energy neutrinos in the energy region above 100 TeV and ultrahigh energy cosmic rays (UHECRs) at energies above $10^{19}$ eV motivates multi-messenger observation approaches involving neutrinos and the…

High Energy Astrophysical Phenomena · Physics 2023-09-25 Shigeru Yoshida

Multiwavelength modeling of TeV AGN observed by HESS

The High Energy Stereoscopic System (H.E.S.S.) experiment, a ground-based gamma-ray Cherenkov telescope array located in Namibia, has now detected many extragalactic objects, which redshifts range from z=0.00183 up to z=0.2, possibly more.…

Astrophysics · Physics 2007-09-12 Jean-Philippe Lenain

Optical follow-up of high-energy neutrinos detected by IceCube

Three-quarters of the 1 cubic kilometer neutrino telescope IceCube is currently taking data. Current models predict high-energy neutrino emission from transient objects like supernovae (SNe) and gammaray bursts (GRBs). To increase the…

High Energy Astrophysical Phenomena · Physics 2019-08-15 A. Franckowiak , C. Akerlof , D. F. Cowen , M. Kowalski , R. Lehmann , T. Schmidt , F. Yuan

Cherenkov Telescope Array is Well Suited to Follow Up Gravitational Wave Transients

The first gravitational-wave (GW) observations will greatly benefit from the detection of coincident electromagnetic counterparts. Electromagnetic follow-ups will nevertheless be challenging for GWs with poorly reconstructed directions. GW…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Imre Bartos , Peter Veres , Daniel Nieto , Valerie Connaughton , Brian Humensky , Kevin Hurley , Szabolcs Marka , Peter Meszaros , Reshmi Mukherjee , Paul O'Brien , Julian P. Osborne

Neutrino Telescopes

The observation of high energy cosmic neutrinos can shed light on the astrophysical sites and mechanisms involved in the acceleration of protons and nuclei to the high energies observed at Earth by cosmic ray detectors. More generally, high…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Juan Jose Hernandez-Rey

Ultra Fast Astronomy: Optimized Detection of Multimessenger Transients

Ultra Fast Astronomy is a new frontier becoming enabled by improved detector technology allowing discovery of optical transients on millisecond to nanosecond time scales. These may reveal counterparts of energetic processes such as fast…

Instrumentation and Methods for Astrophysics · Physics 2021-11-08 Mikhail Denissenya , Eric V. Linder

H.E.S.S. discovery of very-high-energy emission from the blazar PKS 0736+017: on the location of the $\gamma$-ray emitting region in FSRQs

With the installation of a new 28-m diameter imaging atmospheric Cherenkov telescope in the middle of the array, the H.E.S.S. instrument has entered since 2012 into its Phase II. The fifth large-size telescope is particularly important to…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Matteo Cerruti , Jean-Philippe Lenain , Heike Prokoph

A Multi-messenger Search for Ultra-high-energy Gamma Rays in Coincidence with Neutrinos

The last five years have shown us that ultra-high-energy (UHE; $>$100 TeV) gamma-ray sources are ubiquitous, but the nature of these sources remain highly uncertain. UHE gamma rays can be produced via either leptonic (Inverse compton) or…

High Energy Astrophysical Phenomena · Physics 2026-03-25 R. Alfaro , C. Alvarez , A. Andrés , E. Anita-Rangel , M. Araya , J. C. Arteaga-Velázquez , D. Avila Rojas , H. A. Ayala Solares , R. Babu , P. Bangale , E. Belmont-Moreno , A. Bernal , K. S. Caballero-Mora , T. Capistrán , A. Carramiñana , S. Casanova , U. Cotti , J. Cotzomi , S. Coutiño de León , E. De la Fuente , C. de León , P. Desiati , N. Di Lalla , R. Diaz Hernandez , M. A. DuVernois , J. C. Díaz-Vélez , K. Engel , T. Ergin , C. Espinoza , K. Fang , N. Fraija , S. Fraija , A. Galván-Gámez , J. A. García-González , F. Garfias , N. Ghosh , M. M. González , J. A. González , J. A. Goodman , S. Groetsch , D. Guevel , J. Gyeong , J. P. Harding , S. Hernández-Cadena , I. Herzog , J. Hinton , D. Huang , F. Hueyotl-Zahuantitla , P. Hüntemeyer , A. Iriarte , S. Kaufmann , A. Lara , K. Leavitt , J. Lee , T. Lewis , H. León Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , K. Malone , M. Martin , O. Martinez , J. Martínez-Castro , J. A. Matthews , P. Miranda-Romagnoli , P. E. Mirón-Enriquez , J. A. Morales-Soto , E. Moreno , M. Mostafá , M. Najafi , A. Nayerhoda , L. Nellen , N. Omodei , M. Osorio-Archila , E. Ponce , Y. Pérez Araujo , E. G. Pérez-Pérez , C. D. Rho , A. Rodriguez Parra , D. Rosa-González , M. Roth , H. Salazar , D. Salazar-Gallegos , A. Sandoval , M. Schneider , J. Serna-Franco , M. Shin , A. J. Smith , Y. Son , R. W. Springer , O. Tibolla , K. Tollefson , I. Torres , R. Torres-Escobedo , E. Varela , L. Villaseñor , X. Wang , Z. Wang , I. J. Watson , H. Wu , S. Yu , S. Yun-Cárcamo , X. Zhang , H. Zhou

New Results from High Energy Gamma-Ray Astronomy

High energy gamma-ray astronomy has recently made significant progresss through ground-based instruments like the {\it H.E.S.S.} array of imaging atmospheric Cherenkov telescopes. The unprecedented angular resolution and the large field of…

Astrophysics · Physics 2009-11-11 Heinrich J. Voelk

An elastic lidar system for the H.E.S.S. Experiment

The H.E.S.S. experiment in Namibia, Africa, is a high energy gamma ray tele- scope sensitive in the energy range from 100 Gev to a few tens of TeV, via the use of the atmospheric Cherenkov technique. To minimize the systematic errors on the…

Instrumentation and Methods for Astrophysics · Physics 2016-03-04 J. Bregeon , M. Compin , S. Rivoire , M. Sanguillon , G. Vasileiadis

Detecting highly-dispersed bursts with next-generation radio telescopes

Recently, there have been reports of six bright, dispersed bursts of coherent radio emission found in pulsar surveys with the Parkes Multi-beam Receiver. Not much is known about the progenitors of these bursts, but they are…

High Energy Astrophysical Phenomena · Physics 2013-09-10 T. E. Hassall , E. F. Keane , R. P. Fender

Gravitational-wave follow-up with CTA after the detection of GRBs in the TeV energy domain

The recent discovery of TeV emission from gamma-ray bursts (GRBs) by the MAGIC and H.E.S.S. Cherenkov telescopes confirmed that emission from these transients can extend to very high energies. The TeV energy domain reaches the most…

High Energy Astrophysical Phenomena · Physics 2019-10-16 Imre Bartos , K. Rainer Corley , Nihar Gupte , Neil Ash , Zsuzsa. Márka , Szabolcs Márka

Deep learning detection of transients

The next generation of observatories will facilitate the discovery of new types of astrophysical transients. The detection of such phenomena, whose characteristics are presently poorly constrained, will hinge on the ability to perform blind…

High Energy Astrophysical Phenomena · Physics 2019-02-15 Iftach Sadeh

Analysis methods to search for transient events in ground-based Very High Energy gamma-ray astronomy

Transient and variable phenomena in astrophysical sources are of particular importance to understand the underlying gamma-ray emission processes. In the very-high energy gamma-ray domain, transient and variable sources are related to…

Instrumentation and Methods for Astrophysics · Physics 2020-02-26 F. Brun , Q. Piel , M. de Naurois , S. Bernhard

LATTES: a new gamma-ray detector concept for South America

Currently the detection of Very High Energy gamma-rays for astrophysics rely on the measurement of the Extensive Air Showers (EAS) either using Cherenkov detectors or EAS arrays with larger field of views but also larger energy thresholds.…

Instrumentation and Methods for Astrophysics · Physics 2018-05-01 P. Assis , U. Barres de Almeida , A. Blanco , R. Conceição , B. D'Ettoree Piazzoli , A. de Angelis , M. Doro , P. Fonte , L. Lopes , G. Matthiae , M. Pimenta , R. Shellard , B. Tomé

Status of the KM3NeT real-time analysis framework

Multi-messenger astronomy requires real-time systems capable of rapidly responding to external alerts and sharing significant detections with partner observatories. KM3NeT, a deep-sea Cherenkov neutrino telescope in the Mediterranean Sea,…

High Energy Astrophysical Phenomena · Physics 2026-04-30 Martina Marconi