Garret Cotter: Publications

Constraints on the intergalactic magnetic field using Fermi-LAT and H.E.S.S. blazar observations

(2023)

Authors:

HES S., Fermi-LAT Collaborations, :, F Aharonian, J Aschersleben, M Backes, V Barbosa Martins, R Batzofin, Y Becherini, D Berge, B Bi, M Bouyahiaoui, M Breuhaus, R Brose, F Brun, B Bruno, T Bulik, C Burger-Scheidlin, T Bylund, S Caroff, S Casanova, J Celic, M Cerruti, T Chand, S Chandra, A Chen, J Chibueze, O Chibueze, G Cotter, M de Bony, K Egberts, J-P Ernenwein, G Fichet de Clairfontaine, M Filipovic, G Fontaine, M Füßling, S Funk, S Gabici, S Ghafourizadeh, G Giavitto, D Glawion, JF Glicenstein, P Goswami, M-H Grondin, L Haerer, TL Holch, M Holler, D Horns, M Jamrozy, F Jankowsky, V Joshi, I Jung-Richardt, E Kasai, K Katarzynński, R Khatoon, B Khélifi, W Kluźniak, Nu Komin, K Kosack, D Kostunin, RG Lang, S Le Stum, F Leitl, A Lemière, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, G Martí-Devesa, R Marx, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, T Murach, K Nakashima, J Niemiec, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, S Panny, M Panter, RD Parsons, G Peron, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, B Reville, F Rieger, G Rowell, B Rudak, E Ruiz-Velasco, V Sahakian, DA Sanchez, M Sasaki, F Schüussler, HM Schutte, U Schwanke, JNS Shapopi, H Sol, S Spencer, S Steinmassl, H Suzuki, T Takahashi, T Tanaka, AM Taylor, R Terrier, C Thorpe-Morgan, M Tsirou, N Tsuji, Y Uchiyama, C van Eldik, J Veh, C Venter, SJ Wagner, R White, A Wierzcholska, Yu Wun Wong, M Zacharias, D Zargaryan, AA Zdziarski, S Zouari, N Zywucka

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Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations

The Astrophysical Journal Letters American Astronomical Society 950:2 (2023) l16

Authors:

F Aharonian, J Aschersleben, M Backes, V Barbosa Martins, R Batzofin, Y Becherini, D Berge, B Bi, M Bouyahiaoui, M Breuhaus, R Brose, F Brun, B Bruno, T Bulik, C Burger-Scheidlin, T Bylund, S Caroff, S Casanova, J Celic, M Cerruti, T Chand, S Chandra, A Chen, J Chibueze, O Chibueze, G Cotter, M de Bony, K Egberts, J-P Ernenwein, G Fichet de Clairfontaine, M Filipovic, G Fontaine, M Füssling, S Funk, S Gabici, S Ghafourizadeh, G Giavitto, D Glawion, JF Glicenstein, P Goswami, M-H Grondin, L Haerer, TL Holch, M Holler, D Horns, M Jamrozy, F Jankowsky, V Joshi, I Jung-Richardt, E Kasai, K Katarzyński, R Khatoon, B Khélifi, W Kluźniak, Nu Komin, K Kosack, D Kostunin, RG Lang, S Le Stum, F Leitl, A Lemière, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, G Martí-Devesa, R Marx, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, T Murach, K Nakashima, J Niemiec, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, S Panny, M Panter, RD Parsons, G Peron, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, B Reville, F Rieger, G Rowell, B Rudak, E Ruiz-Velasco, V Sahakian, DA Sanchez, M Sasaki, F Schüssler, HM Schutte, U Schwanke, JNS Shapopi, H Sol, S Spencer, S Steinmassl, H Suzuki, T Takahashi, T Tanaka, AM Taylor, R Terrier, C Thorpe-Morgan, M Tsirou, N Tsuji, Y Uchiyama, C van Eldik, J Veh, C Venter, SJ Wagner, R White, A Wierzcholska, Yu Wun Wong, M Zacharias, D Zargaryan, AA Zdziarski, S Zouari, N Żywucka, HESS Collaboration, M Meyer, Fermi-LAT Collaboration

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Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87

(2023)

Authors:

HESS Collaboration, :, F Aharonian, F Ait Benkhali, C Arcaro, J Aschersleben, M Backes, V Barbosa Martins, R Batzofin, Y Becherini, D Berge, K Bernlöhr, B Bi, M Böttcher, C Boisson, J Bolmont, J Borowska, F Bradascio, M Breuhaus, R Brose, F Brun, B Bruno, T Bulik, C Burger-Scheidlin, T Bylund, S Caroff, S Casanova, R Cecil, J Celic, M Cerruti, T Chand, S Chandra, A Chen, J Chibueze, O Chibueze, G Cotter, J Damascene Mbarubucyeye, A Djannati-Ataï, K Egberts, J-P Ernenwein, G Fichet de Clairfontaine, M Filipovic, G Fontaine, M Füßling, S Funk, S Gabici, S Ghafourizadeh, G Giavitto, D Glawion, JF Glicenstein, P Goswami, G Grolleron, M-H Grondin, L Haerer, M Haupt, G Hermann, JA Hinton, TL Holch, D Horns, M Jamrozy, F Jankowsky, V Joshi, I Jung-Richardt, E Kasai, K Katarzyński, R Khatoon, B Khélifi, W Kluźniak, Nu Komin, K Kosack, D Kostunin, RG Lang, S Le Stum, F Leitl, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, P Marinos, G Martí-Devesa, R Marx, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, K Nakashima, M de Naurois, J Niemiec, A Priyana Noel, P O'Brien, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, S Panny, M Panter, RD Parsons, G Peron, S Pita, DA Prokhorov, H Prokoph, G Pühlhofer, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, M Renaud, F Rieger, G Rowell, B Rudak, E Ruiz Velasco, V Sahakian, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, J Schäfer, F Schüssler, U Schwanke, JNS Shapopi, H Sol, A Specovius, S Spencer, Ł Stawarz, R Steenkamp, S Steinmassl, C Steppa, I Sushch, H Suzuki, T Takahashi, T Tanaka, AM Taylor, R Terrier, M Tsirou, N Tsuji, Y Uchiyama, C van Eldik, B van Soelen, M Vecchi, J Veh, C Venter, J Vink, T Wach, SJ Wagner, R White, A Wierzcholska, Yu Wun Wong, M Zacharias, D Zargaryan, AA Zdziarski, A Zech, S Zouari, N Żywucka

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Detection of extended γ-ray emission around the Geminga pulsar with H.E.S.S.

Astronomy & Astrophysics EDP Sciences 673 (2023) a148

Authors:

F Aharonian, F Ait Benkhali, J Aschersleben, H Ashkar, M Backes, V Barbosa Martins, R Batzofin, Y Becherini, D Berge, K Bernlöhr, B Bi, M Böttcher, C Boisson, J Bolmont, J Borowska, M Bouyahiaoui, F Bradascio, R Brose, F Brun, B Bruno, T Bulik, C Burger-Scheidlin, F Cangemi, S Caroff, S Casanova, J Celic, M Cerruti, P Chambery, T Chand, S Chandra, A Chen, J Chibueze, O Chibueze, G Cotter, J Damascene Mbarubucyeye, J Devin, A Djannati-Ataï, A Dmytriiev, K Egberts, S Einecke, J-P Ernenwein, K Feijen, G Fichet de Clairfontaine, M Filipovic, G Fontaine, M Füßling, S Funk, S Gabici, YA Gallant, S Ghafourizadeh, G Giavitto, L Giunti, D Glawion, JF Glicenstein, P Goswami, G Grolleron, M-H Grondin, L Haerer, M Haupt, G Hermann, JA Hinton, W Hofmann, TL Holch, M Holler, D Horns, Zhiqiu Huang, M Jamrozy, F Jankowsky, V Joshi, I Jung-Richardt, E Kasai, K Katarzyński, B Khélifi, W Kluźniak, Nu Komin, K Kosack, D Kostunin, RG Lang, S Le Stum, F Leitl, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, V Marandon, P Marchegiani, A Marcowith, P Marinos, G Martí-Devesa, R Marx, G Maurin, PJ Meintjes, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, K Nakashima, M de Naurois, J Niemiec, A Priyana Noel, P O’Brien, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, S Panny, M Panter, RD Parsons, G Peron, DA Prokhorov, G Pühlhofer, A Quirrenbach, A Reimer, O Reimer, M Renaud, B Reville, F Rieger, G Rowell, B Rudak, H Rueda Ricarte, E Ruiz-Velasco, V Sahakian, H Salzmann, A Santangelo, M Sasaki, F Schüssler, HM Schutte, U Schwanke, JNS Shapopi, A Sinha, H Sol, A Specovius, S Spencer, Ł Stawarz, S Steinmassl, I Sushch, H Suzuki, T Takahashi, T Tanaka, T Tavernier, AM Taylor, R Terrier, C Thorpe-Morgan, M Tsirou, N Tsuji, M Vecchi, C Venter, J Vink, SJ Wagner, R White, A Wierzcholska, Yu Wun Wong, M Zacharias, D Zargaryan, AA Zdziarski, A Zech, S Zouari, N Żywucka

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Constraints on axionlike particles from a combined analysis of three flaring Fermi flat-spectrum radio quasars

Physical Review D American Physical Society 107:8 (2023) 83027

Authors:

James Davies, Manuel Meyer, Garret Cotter

Abstract:

Many theories beyond the Standard Model of particle physics predict the existence of axionlike particles (ALPs) that mix with photons in the presence of a magnetic field. Searching for the effects of ALP-photon mixing in gamma-ray observations of blazars has provided some of the strongest constraints on ALP parameter space so far. Previously, only individual sources have been analyzed. We perform a combined analysis on Fermi Large Area Telescope data of three bright flaring flat-spectrum radio quasars, with the blazar jets themselves as the dominant mixing region. For the first time, we include a full treatment of photon-photon dispersion within the jet and account for the uncertainty in our B-field model by leaving the field strength free in the fitting. Overall, we find no evidence for ALPs but are able to exclude the ALP parameters 5 neV≲ma≲200 neV and gaγ≳5×10-12 GeV-1 with 95% confidence.

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Garret Cotter

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Constraints on the intergalactic magnetic field using Fermi-LAT and H.E.S.S. blazar observations

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Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations

Authors:

Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87

Authors:

Detection of extended γ-ray emission around the Geminga pulsar with H.E.S.S.

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Constraints on axionlike particles from a combined analysis of three flaring Fermi flat-spectrum radio quasars

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Garret Cotter

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Constraints on the intergalactic magnetic field using Fermi-LAT and H.E.S.S. blazar observations

Authors:

Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations

Authors:

Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87

Authors:

Detection of extended γ-ray emission around the Geminga pulsar with H.E.S.S.

Authors:

Constraints on axionlike particles from a combined analysis of three flaring Fermi flat-spectrum radio quasars

Authors:

Abstract: