A1 Refereed original research article in a scientific journal
Search for Very High-energy Emission from the Millisecond Pulsar PSR J0218+4232
Authors: Acciari VA, Ansoldi S, Antonelli LA, Engels AA, Artero M, Asano K, Baack D, Babic A, Baquero A, de Almeida UB, Barrio JA, Gonzalez JB, Bednarek W, Bellizzi L, Bernardini E, Bernardos M, Berti A, Besenrieder J, Bhattacharyya W, Bigongiari C, Biland A, Blanch O, Bonnoli G, Bosnjak Z, Busetto G, Carosi R, Ceribella G, Cerruti M, Chai Y, Chilingarian A, Cikota S, Colak SM, Colombo E, Contreras JL, Cortina J, Covino S, D'Amico G, D'Elia V, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Delfino M, Delgado J, Mendez CD, Depaoli D, Di Pierro F, Di Venere L, Espineira ED, Prester DD, Donini A, Dorner D, Doro M, Elsaesser D, Ramazani VF, Fattorini A, Ferrara G, Fonseca MV, Font L, Fruck C, Fukami S, Lopez RJG, Garczarczyk M, Gasparyan S, Gaug M, Giglietto N, Giordano F, Gliwny P, Godinovic N, Green JG, Green D, Hadasch D, Hahn A, Heckmann L, Herrera J, Hoang J, Hrupec D, Hutten M, Inada T, Inoue S, Ishio K, Iwamura Y, Jimenez I, Jormanainen J, Jouvin L, Kajiwara Y, Karjalainen M, Kerszberg D, Kobayashi Y, Kubo H, Kushida J, Lamastra A, Lelas D, Leone F, Lindfors E, Lombardi S, Longo F, Lopez-Coto R, Lopez-Moya M, Lopez-Oramas A, Loporchio S, Fraga BMD, Maggio C, Majumdar P, Makariev M, Mallamaci M, Maneva G, Manganaro M, Mannheim K, Maraschi L, Mariotti M, Martinez M, Mazin D, Menchiari S, Mender S, Micanovic S, Miceli D, Miener T, Minev M, Miranda JM, Mirzoyan R, Molina E, Moralejo A, Morcuende D, Moreno V, Moretti E, Neustroev V, Nigro C, Nilsson K, Nishijima K, Noda K, Nozaki S, Ohtani Y, Oka T, Otero-Santos J, Paiano S, Palatiello M, Paneque D, Paoletti R, Paredes JM, Pavletic L, Penil P, Perennes C, Persic M, Moroni PGP, Prandini E, Priyadarshi C, Puljak I, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Saha L, Sahakyan N, Saito T, Sakurai S, Satalecka K, Saturni FG, Schleicher B, Schmidt K, Schweizer T, Sitarek J, Sobczynska D, Spolon A, Stamerra A, Strom D, Strzys M, Suda Y, Suric T, Takahashi M, Tavecchio F, Temnikov P, Terzic T, Teshima M, Tosti L, Truzzi S, Tutone A, Ubach S, van Scherpenberg J, Vanzo G, Acosta MV, Ventura S, Verguilov V, Vigorito CF, Vitale V, Vovk I, Will M, Wunderlich C, Zaric D, Caraveo PA, Cognard I, Guillemot L, Harding AK, Li J, Limyansky B, Ng CY, Torres DF, Parkinson PMS
Publisher: IOP Publishing Ltd
Publication year: 2021
Journal: Astrophysical Journal
Journal name in source: ASTROPHYSICAL JOURNAL
Journal acronym: ASTROPHYS J
Article number: ARTN 251
Volume: 922
Issue: 2
Number of pages: 14
ISSN: 0004-637X
DOI: https://doi.org/10.3847/1538-4357/ac20d7
Web address : https://iopscience.iop.org/article/10.3847/1538-4357/ac20d7
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/68513183
PSR J0218+4232 is one of the most energetic millisecond pulsars known and has long been considered as one of the best candidates for very high-energy (VHE; >100 GeV) gamma-ray emission. Using 11.5 yr of Fermi Large Area Telescope (LAT) data between 100 MeV and 870 GeV, and similar to 90 hr of Major Atmospheric Gamma Imaging Cherenkov (MAGIC) observations in the 20 GeV to 20 TeV range, we searched for the highest energy gamma-ray emission from PSR J0218+4232. Based on the analysis of the LAT data, we find evidence for pulsed emission above 25 GeV, but see no evidence for emission above 100 GeV (VHE) with MAGIC. We present the results of searches for gamma-ray emission, along with theoretical modeling, to interpret the lack of VHE emission. We conclude that, based on the experimental observations and theoretical modeling, it will remain extremely challenging to detect VHE emission from PSR J0218+4232 with the current generation of Imaging Atmospheric Cherenkov Telescopes, and maybe even with future ones, such as the Cherenkov Telescope Array.
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