• 3HSP J095507.9+355101: A flaring extreme blazar coincident in space and time with IceCube-200107A 

      Giommi, P.; Padovani, P.; Oikonomou, Foteini; Glauch, T.; Paiano, S.; Resconi, E. (Peer reviewed; Journal article, 2020)
      The uncertainty region of the highly energetic neutrino IceCube200107A includes 3HSP J095507.9+355101 (z = 0.557), an extreme blazar, which was detected in a high, very hard, and variable X-ray state shortly after the ...
    • Comprehensive Multimessenger Modeling of the Extreme Blazar 3HSP J095507.9+355101 and Predictions for IceCube 

      Petropoulou, Maria; Oikonomou, Foteini; Giommi, Paolo (Peer reviewed; Journal article, 2020)
      3HSP J095507.9+355101 is an extreme blazar that has been possibly associated with a high-energy neutrino (IceCube-200107A) detected 1 day before the blazar was found to undergo a hard X-ray flare. We perform a comprehensive ...
    • Gamma-ray counterparts of 2WHSP high-synchrotron-peaked BL Lac objects as possible signatures of ultra-high-energy cosmic ray emission 

      Toomey, Michael; Oikonomou, Foteini; Murase, Kohta (Peer reviewed; Journal article, 2020)
      We present a search for high-energy γ-ray emission from 566 Active Galactic Nuclei at redshift z > 0.2, from the 2WHSP catalogue of high-synchrotron peaked BL Lac objects with 8 yr of Fermi-LAT data. We focus on a redshift ...
    • High-Energy Neutrino and Gamma-Ray Emission from Tidal Disruption Events 

      Murase, Kohta; Kimura, Shigeo; Zhang, Bing; Oikonomou, Foteini; Petropoulou, Maria (Peer reviewed; Journal article, 2020)
      Tidal disruption events (TDE) have been considered as cosmic-ray and neutrino sources for a decade. We suggest two classes of new scenarios for high-energy multi-messenger emission from TDEs that do not have to harbor ...
    • Multi-messenger modelling of FR0 galaxies 

      Paulsen, Therese (Master thesis, 2022)
      FR0-galakser er en nyoppdaget klasse av radiogalakser, som, i motsetning til FRI- og FRII-klassene, kan karakteriseres av deres begrensede jetstruktur og at de er tallrike i det lokale universet. Målet med denne masteroppgaven ...
    • A Neutral Beam Model for High-Energy Neutrino Emission from the Blazar TXS 0506+056 

      Zhang, Bing; Petropoulou, Maria; Murase, Kohta; Oikonomou, Foteini (Peer reviewed; Journal article, 2020)
      The IceCube collaboration reported an ~3.5σ excess of 13 ± 5 neutrino events in the direction of the blazar TXS 0506+056 during an ~6 month period in 2014–2015, as well as the (~3σ) detection of a high-energy muon neutrino ...
    • Quantum gravity phenomenology at the dawn of the multi-messenger era—A review 

      Addazi, A.; Alvarez-Muniz, J.; Alves Batista, Batista; Amelino-Camelia, G.; Antonelli, V.; Arzano, M.; Asorey, M.; Atteia, J.-L.; Bahamonde, S.; Bajardi, F.; Ballesteros, A.; Baret, B.; Barreiros, D.M.; Basilakos, S.; Benisty, D.; Birnholtz, O.; Blanco-Pillado, J.J.; Blas, D.; Bolmont, J.; Boncioli, D.; Bosso, P.; Calcagni, G.; Capozziello, S.; Carmona, J.M.; Cerci, S.; Chernyakova, M.; Clesse, S.; Coelho, J.A.B.; Colak, S.M.; Cortes, J.L.; Das, S.; D'Esposito, V.; Demirci, M.; Di Luca, Luca; di Matteo, Matteo; Dimitrijevic, D.; Djordjevic, G.; Prester, D. Dominis; Eichhorn, A.; Ellis, J.; Escamilla-Rivera, C.; Fabiano, G.; Franchino-Viñas, S.A.; Frassino, A.M.; Frattulillo, D.; Funk, S.; Fuster, A.; Gamboa, J.; Gent, A.; Gergely, L.A.; Giammarchi, M.; Giesel, K.; Glicenstein, J.-F.; Gracia-Bondía, J.; Gracia-Ruiz, R.; Gubitosi, G.; Guendelman, E.I.; Gutierrez-Sagredo, I.; Haegel, L.; Heefer, S.; Held, A.; Herranz, F.J.; Hinderer, T.; Illana, J.I.; Ioannisian, A.; Jetzer, P.; Joaquim, F.R.; Kampert, K.-H.; Uysal, A. Karasu; Katori, T.; Kazarian, N.; Kerszberg, D.; Kowalski-Glikman, J.; Kuroyanagi, S.; Lämmerzahl, C.; Said, J. Levi; Liberati, S.; Lim, E.; Lobo, I.P.; López-Moya, M.; Luciano, G.G.; Manganaro, M.; Marcianò, A.; Martín-Moruno, P.; Martinez, Manel; Martinez, Mario; Martínez-Huerta, H.; Martínez-Miravé, P.; Masip, M.; Mattingly, D.; Mavromatos, N.; Mazumdar, A.; Méndez, F.; Mercati, F.; Micanovic, S.; Mielczarek, J.; Miller, A.L.; Milosevic, M.; Minic, D.; Miramonti, L.; Mitsou, V.A.; Moniz, P.; Mukherjee, S.; Nardini, Germano; Navas, S.; Niechciol, M.; Nielsen, A.B.; Obers, N.A.; Oikonomou, Foteini; Oriti, D.; Paganini, C.F.; Palomares-Ruiz, S.; Pasechnik, R.; Pasic, V.; Pérez de los Heros, de; Pfeifer, C.; Pieroni, M.; Piran, T.; Platania, A.; Rastgoo, S.; Relancio, J.J.; Reyes, M.A.; Ricciardone, Angelo; Risse, M.; Frias, M.D. Rodriguez; Rosati, G.; Rubiera-Garcia, D.; Sahlmann, H.; Sakellariadou, M.; Salamida, F.; Saridakis, E.N.; Satunin, P.; Schiffer, M.; Schüssler, F.; Sigl, G.; Sitarek, J.; Peracaula, J. Solà; Sopuerta, C.F.; Sotiriou, T.P.; Spurio, M.; Staicova, D.; Stergioulas, N.; Stoica, S.; Strišković, J.; Stuttard, T.; Cerci, D. Sunar; Tavakoli, Y.; Ternes, C.A.; Terzić, T.; Thiemann, T.; Tinyakov, P.; Torri, M.D.C.; Tórtola, M.; Trimarelli, C.; Trześniewski, T.; Tureanu, A.; Urban, Federico; Vagenas, E.C.; Vernieri, D.; Vitagliano, V.; Wallet, J.-C.; Zornoza, J.D. (Peer reviewed; Journal article, 2022)
      The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection ...