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Related papers: VHE Observation of CTA 1 with VERITAS

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CTA 1 (G119.5+10.2) is a composite supernova remnant (SNR) with a shell-type structure, visible in the radio band, surrounding a smaller pulsar wind nebula. Fermi detected a radio-quiet pulsar PSR J0007+7303 within the radio shell. 26.5…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Nahee Park

CTA~1 is a composite supernova remnant featuring a shell structure and an inner Pulsar Wind Nebula. The shell is visible in the radio band, while Fermi has detected the radio-quiet pulsar PSR J0007+7303 at its core. Gamma-ray detectors such…

High Energy Astrophysical Phenomena · Physics 2025-10-01 Bastien Lacave

We report the discovery of TeV gamma-ray emission coincident with the shell-type radio supernova remnant (SNR) CTA 1 using the VERITAS gamma-ray observatory. The source, VER J0006+729, was detected as a 6.5 standard deviation excess over…

CTA 1 is a shell-type supernova remnant (SNR) with a central pulsar wind nebula (PWN), visible at very-high-energy (VHE) from 50 GeV to 100 TeV from a moderately extended emission region. While general consensus concludes the VHE emission…

High Energy Astrophysical Phenomena · Physics 2025-10-07 Alisha Chromey

Prompted by the Fermi LAT discovery of a radio-quiet gamma-ray pulsar inside the CTA 1 supernova remnant, we obtained a 130 ks XMM-Newton observation to assess the timing behavior of this pulsar. Exploiting both the unprecedented photon…

High Energy Astrophysical Phenomena · Physics 2015-05-20 P. A. Caraveo , A. De Luca , M. Marelli , G. F. Bignami , P. S. Ray , P. M. Saz-Parkinson , G. Kanbach

The Fermi Large Area Telescope (LAT) discovered the time signature of a radio-silent pulsar coincident with RX J0007.0+7302, a plerion-like X-ray source at the centre of the CTA 1 supernova remnant. The inferred timing parameters of the…

High Energy Astrophysical Phenomena · Physics 2015-06-12 R. P. Mignani , A. de Luca , N. Rea , A. Shearer , S. Collins , D. F. Torres , D. Hadasch , A. Caliandro

Supernova remnants (SNRs) are among the strongest candidates to explain the flux of cosmic rays below the knee around 10^15 eV. Pulsar wind nebulae (PWNe), synchrotron nebulae powered by the spin-down of energetic young pulsars, comprise…

Astrophysics of Galaxies · Physics 2019-08-13 Thomas Brian Humensky

We report the discovery of an unidentified, extended source of very-high-energy (VHE) gamma-ray emission, VER J2019+407, within the radio shell of the supernova remnant SNR G78.2+2.1, using 21.4 hours of data taken by the VERITAS gamma-ray…

We report a detection of GeV $\gamma$-ray emission potentially originating from the pulsar wind nebula in CTA 1 by analyzing about 15 yr of Fermi Large Area Telescope data. By selecting an energy range from 50 GeV to 1 TeV to remove…

High Energy Astrophysical Phenomena · Physics 2024-03-12 Liancheng Zhou , Keyao Wu , Yunlu Gong , Jun Fang

We report the discovery of MeV-GeV gamma-ray emission by the Fermi-LAT positionally coincident with the TeV pulsar wind nebula (PWN) HESS~J1554-550 within the host supernova remnant (SNR) G327.1-1.1. The gamma-ray emission is point-like and…

High Energy Astrophysical Phenomena · Physics 2022-12-07 Jordan Eagle , Daniel Castro , Tea Temim , Jean Ballet , Patrick Slane , Joseph Gelfand , Matthew Kerr , Marco Ajello

We present a detailed analysis of the high energy gamma-ray source 2EG J0008+7307. The source has a steady flux and a hard spectrum, softening above 2 GeV. The properties of the gamma-ray source are suggestive of emission from a young…

Astrophysics · Physics 2009-10-30 K. T. S. Brazier , O. Reimer , G. Kanbach , A. Carraminana

Energetic young pulsars and expanding blast waves (supernova remnants, SNRs) are the most visible remains after massive stars, ending their lives, explode in core-collapse supernovae. The Fermi Gamma-Ray Space Telescope has unveiled a radio…

Astrophysics · Physics 2012-08-27 Fermi LAT Collaboration

We present evidence that the very-high-energy (VHE, E > 100 GeV) gamma-ray emission coincident with the supernova remnant IC 443 is extended. IC 443 contains one of the best-studied sites of supernova remnant/molecular cloud interaction and…

We present new high angular resolution and high sensitivity radio observations toward the neutron star RX J0007.0+7303, carried out with the Karl G. Jansky Very Large Array at 1.5 GHz. This source powers a pulsar wind nebula (PWN) only…

High Energy Astrophysical Phenomena · Physics 2014-12-05 E. Giacani , A. C. Rovero , A. Cillis , A. Pichel , G. Dubner

Geminga was first detected as a gamma-ray point source by the SAS-2 gamma-ray satellite observatory and the COS-B X-ray satellite observatory. Subsequent observations have identified Geminga as a heavily obscured radio-quiet pulsar…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Andy Flinders

We present deep Chandra observations of the pulsar wind nebula (PWN) powered by PSR J0007+7303 in the composite supernova remnant CTA 1. The merged ACIS image shows a $\sim20''$ jet extending south of the pulsar and bending toward the…

High Energy Astrophysical Phenomena · Physics 2026-05-21 Seth Gagnon , Oleg Kargaltsev , Jason Alford , Joseph Gelfand , Alexander Lange

We report observation of the supernova remnant IC443 (G189.1+3.0) with the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) in the energy band between 200MeV and 50GeV. IC443 is a shell-type supernova remnant with mixed morphology…

High Energy Astrophysical Phenomena · Physics 2015-05-18 A. A. Abdo

We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX~J1713.7$-$3946, a young supernova remnant (SNR) and one of the brightest sources ever discovered in very-high-energy (VHE) gamma rays. Special attention is…

High Energy Astrophysical Phenomena · Physics 2020-01-30 The CTA Consortium , : , F. Acero , R. Aloisio , J. Amans , E. Amato , L. A. Antonelli , C. Aramo , T. Armstrong , F. Arqueros , K. Asano , M. Ashley , M. Backes , C. Balazs , A. Balzer , A. Bamba , M. Barkov , J. A. Barrio , W. Benbow , K. Bernlöhr , V. Beshley , C. Bigongiari , A. Biland , A. Bilinsky , E. Bissaldi , J. Biteau , O. Blanch , P. Blasi , J. Blazek , C. Boisson , G. Bonanno , A. Bonardi , C. Bonavolontà , G. Bonnoli , C. Braiding , S. Brau-Nogué , J. Bregeon , A. M. Brown , V. Bugaev , A. Bulgarelli , T. Bulik , M. Burton , A. Burtovoi , G. Busetto , M. Böttcher , R. Cameron , M. Capalbi , A. Caproni , P. Caraveo , R. Carosi , E. Cascone , M. Cerruti , S. Chaty , A. Chen , X. Chen , M. Chernyakova , M. Chikawa , J. Chudoba , J. Cohen-Tanugi , S. Colafrancesco , V. Conforti , J. L. Contreras , A. Costa , G. Cotter , S. Covino , G. Covone , P. Cumani , G. Cusumano , F. D'Ammando , D. D'Urso , M. Daniel , F. Dazzi , A. De Angelis , G. De Cesare , A. De Franco , F. De Frondat , E. M. de Gouveia Dal Pino , C. De Lisio , R. de los Reyes Lopez , B. De Lotto , M. de Naurois , F. De Palma , M. Del Santo , C. Delgado , D. della Volpe , T. Di Girolamo , C. Di Giulio , F. Di Pierro , L. Di Venere , M. Doro , J. Dournaux , D. Dumas , V. Dwarkadas , C. Díaz , J. Ebr , K. Egberts , S. Einecke , D. Elsässer , S. Eschbach , D. Falceta-Goncalves , G. Fasola , E. Fedorova , A. Fernández-Barral , G. Ferrand , M. Fesquet , E. Fiandrini , A. Fiasson , M. D. Filipovíc , V. Fioretti , L. Font , G. Fontaine , F. J. Franco , L. Freixas Coromina , Y. Fujita , Y. Fukui , S. Funk , A. Förster , A. Gadola , R. Garcia López , M. Garczarczyk , N. Giglietto , F. Giordano , A. Giuliani , J. Glicenstein , R. Gnatyk , P. Goldoni , T. Grabarczyk , R. Graciani , J. Graham , P. Grandi , J. Granot , A. J. Green , S. Griffiths , S. Gunji , H. Hakobyan , S. Hara , T. Hassan , M. Hayashida , M. Heller , J. C. Helo , J. Hinton , B. Hnatyk , J. Huet , M. Huetten , T. B. Humensky , M. Hussein , J. Hörandel , Y. Ikeno , T. Inada , Y. Inome , S. Inoue , T. Inoue , Y. Inoue , K. Ioka , M. Iori , J. Jacquemier , P. Janecek , D. Jankowsky , I. Jung , P. Kaaret , H. Katagiri , S. Kimeswenger , S. Kimura , J. Knödlseder , B. Koch , J. Kocot , K. Kohri , N. Komin , Y. Konno , K. Kosack , S. Koyama , M. Kraus , H. Kubo , G. Kukec Mezek , J. Kushida , N. La Palombara , K. Lalik , G. Lamanna , H. Landt , J. Lapington , P. Laporte , S. Lee , J. Lees , J. Lefaucheur , J. -P. Lenain , G. Leto , E. Lindfors , T. Lohse , S. Lombardi , F. Longo , M. Lopez , F. Lucarelli , P. L. Luque-Escamilla , R. López-Coto , M. C. Maccarone , G. Maier , G. Malaguti , D. Mandat , G. Maneva , S. Mangano , A. Marcowith , J. Martí , M. Martínez , G. Martínez , S. Masuda , G. Maurin , N. Maxted , C. Melioli , T. Mineo , N. Mirabal , T. Mizuno , R. Moderski , M. Mohammed , T. Montaruli , A. Moralejo , K. Mori , G. Morlino , A. Morselli , E. Moulin , R. Mukherjee , C. Mundell , H. Muraishi , K. Murase , S. Nagataki , T. Nagayoshi , T. Naito , D. Nakajima , T. Nakamori , R. Nemmen , J. Niemiec , D. Nieto , M. Nievas-Rosillo , M. Nikołajuk , K. Nishijima , K. Noda , L. Nogues , D. Nosek , B. Novosyadlyj , S. Nozaki , Y. Ohira , M. Ohishi , S. Ohm , A. Okumura , R. A. Ong , R. Orito , A. Orlati , M. Ostrowski , I. Oya , M. Padovani , J. Palacio , M. Palatka , J. M. Paredes , S. Pavy , A. Pe'er , M. Persic , P. Petrucci , O. Petruk , A. Pisarski , M. Pohl , A. Porcelli , E. Prandini , J. Prast , G. Principe , M. Prouza , E. Pueschel , G. Pühlhofer , A. Quirrenbach , M. Rameez , O. Reimer , M. Renaud , M. Ribó , J. Rico , V. Rizi , J. Rodriguez , G. Rodriguez Fernandez , J. J. Rodríguez Vázquez , P. Romano , G. Romeo , J. Rosado , J. Rousselle , G. Rowell , B. Rudak , I. Sadeh , S. Safi-Harb , T. Saito , N. Sakaki , D. Sanchez , P. Sangiorgi , H. Sano , M. Santander , S. Sarkar , M. Sawada , E. J. Schioppa , H. Schoorlemmer , P. Schovanek , F. Schussler , O. Sergijenko , M. Servillat , A. Shalchi , R. C. Shellard , H. Siejkowski , A. Sillanpää , D. Simone , V. Sliusar , H. Sol , S. Stanič , R. Starling , Ł. Stawarz , S. Stefanik , M. Stephan , T. Stolarczyk , M. Szanecki , T. Szepieniec , G. Tagliaferri , H. Tajima , M. Takahashi , J. Takeda , M. Tanaka , S. Tanaka , L. A. Tejedor , I. Telezhinsky , P. Temnikov , Y. Terada , D. Tescaro , M. Teshima , V. Testa , S. Thoudam , F. Tokanai , D. F. Torres , E. Torresi , G. Tosti , C. Townsley , P. Travnicek , C. Trichard , M. Trifoglio , S. Tsujimoto , V. Vagelli , P. Vallania , L. Valore , W. van Driel , C. van Eldik , J. Vandenbroucke , V. Vassiliev , M. Vecchi , S. Vercellone , S. Vergani , C. Vigorito , S. Vorobiov , M. Vrastil , M. L. Vázquez Acosta , S. J. Wagner , R. Wagner , S. P. Wakely , R. Walter , J. E. Ward , J. J. Watson , A. Weinstein , M. White , R. White , A. Wierzcholska , P. Wilcox , D. A. Williams , R. Wischnewski , P. Wojcik , T. Yamamoto , H. Yamamoto , R. Yamazaki , S. Yanagita , L. Yang , T. Yoshida , M. Yoshida , S. Yoshiike , T. Yoshikoshi , M. Zacharias , L. Zampieri , R. Zanin , M. Zavrtanik , D. Zavrtanik , A. Zdziarski , A. Zech , H. Zechlin , V. Zhdanov , A. Ziegler , J. Zorn
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