Search for cosmic-ray-induced gamma-ray emission in galaxy clusters

M. Ackermann; M. Ajello; A. Albert; A. Allafort; W. B. Atwood; L. Baldini; J. Ballet; G. Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; E. D. Bloom; E. Bonamente; E. Bottacini; T. J. Brandt; J. Bregeon; M. Brigida; P. Bruel; R. Buehler; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; E. Cavazzuti; R. C.G. Chaves; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; J. Cohen-Tanugi; J. Conrad; F. D'Ammando; A. De Angelis; F. De Palma; C. D. Dermer; S. W. Digel; P. S. Drell; A. Drlica-Wagner; C. Favuzzi; A. Franckowiak; S. Funk; P. Fusco; F. Gargano; D. Gasparrini; S. Germani; N. Giglietto; F. Giordano; M. Giroletti; G. Godfrey; G. A. Gomez-Vargas; I. A. Grenier; S. Guiriec; M. Gustafsson; D. Hadasch; M. Hayashida; J. Hewitt; R. E. Hughes; T. E. Jeltema; G. Jóhannesson; A. S. Johnson; T. Kamae; J. Kataoka; J. Knödlseder; M. Kuss; J. Lande; S. Larsson; L. Latronico; M. Llena Garde; F. Longo; F. Loparco; M. N. Lovellette; P. Lubrano; M. Mayer; M. N. Mazziotta; J. E. McEnery; P. F. Michelson; W. Mitthumsiri; T. Mizuno; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; R. Nemmen; E. Nuss; T. Ohsugi; M. Orienti; E. Orlando; J. F. Ormes; J. S. Perkins; M. Pesce-Rollins; F. Piron; G. Pivato; S. Rainò; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; J. Ruan; M. Sánchez-Conde; A. Schulz; C. Sgrò; E. J. Siskind; G. Spandre; P. Spinelli; E. Storm; A. W. Strong; D. J. Suson; H. Takahashi; J. G. Thayer; J. B. Thayer; D. J. Thompson; L. Tibaldo; M. Tinivella; D. F. Torres; E. Troja; Y. Uchiyama; T. L. Usher; J. Vandenbroucke; G. Vianello; V. Vitale; B. L. Winer; K. S. Wood; S. Zimmer; A. Pinzke; C. Pfrommer

doi:10.1088/0004-637X/787/1/18

Search for cosmic-ray-induced gamma-ray emission in galaxy clusters

M. Ackermann, M. Ajello, A. Albert, A. Allafort, W. B. Atwood, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, E. D. Bloom, E. Bonamente, E. Bottacini, T. J. Brandt, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, S. BusonG. A. Caliandro, R. A. Cameron, P. A. Caraveo, E. Cavazzuti, R. C.G. Chaves, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, F. D'Ammando, A. De Angelis, F. De Palma, C. D. Dermer, S. W. Digel, P. S. Drell, A. Drlica-Wagner, C. Favuzzi, A. Franckowiak, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, G. Godfrey, G. A. Gomez-Vargas, I. A. Grenier, S. Guiriec, M. Gustafsson, D. Hadasch, M. Hayashida, J. Hewitt, R. E. Hughes, T. E. Jeltema, G. Jóhannesson, A. S. Johnson, T. Kamae, J. Kataoka, J. Knödlseder, M. Kuss, J. Lande, S. Larsson, L. Latronico, M. Llena Garde, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, M. Mayer, M. N. Mazziotta, J. E. McEnery, P. F. Michelson, W. Mitthumsiri, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, R. Nemmen, E. Nuss, T. Ohsugi, M. Orienti, E. Orlando, J. F. Ormes, J. S. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, J. Ruan, M. Sánchez-Conde, A. Schulz, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, E. Storm, A. W. Strong, D. J. Suson, H. Takahashi, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, M. Tinivella, D. F. Torres, E. Troja, Y. Uchiyama, T. L. Usher, J. Vandenbroucke, G. Vianello, V. Vitale, B. L. Winer, K. S. Wood, S. Zimmer, A. Pinzke, C. Pfrommer

研究成果: Article › 査読

118 被引用数 (Scopus)

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Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic interactions give rise to neutral pions which decay into γ rays that are potentially observable with the Large Area Telescope (LAT) on board the Fermi space telescope. We present a joint likelihood analysis searching for spatially extended γ-ray emission at the locations of 50 galaxy clusters in four years of Fermi-LAT data under the assumption of the universal cosmic-ray (CR) model proposed by Pinzke & Pfrommer. We find an excess at a significance of 2.7σ, which upon closer inspection, however, is correlated to individual excess emission toward three galaxy clusters: A400, A1367, and A3112. We discuss these cases in detail and conservatively attribute the emission to unmodeled background systems (for example, radio galaxies within the clusters).Through the combined analysis of 50 clusters, we exclude hadronic injection efficiencies in simple hadronic models above 21% and establish limits on the CR to thermal pressure ratio within the virial radius, R ₂₀₀, to be below 1.25%-1.4% depending on the morphological classification. In addition, we derive new limits on the γ-ray flux from individual clusters in our sample.

本文言語	English
論文番号	18
ジャーナル	Astrophysical Journal
巻	787
号	1
DOI	https://doi.org/10.1088/0004-637X/787/1/18
出版ステータス	Published - 2014 5月 20

ASJC Scopus subject areas

天文学と天体物理学
宇宙惑星科学

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10.1088/0004-637X/787/1/18

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Ackermann, M., Ajello, M., Albert, A., Allafort, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bloom, E. D., Bonamente, E., Bottacini, E., Brandt, T. J., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., ... Pfrommer, C. (2014). Search for cosmic-ray-induced gamma-ray emission in galaxy clusters. Astrophysical Journal, 787(1), Article 18. https://doi.org/10.1088/0004-637X/787/1/18

Ackermann, M, Ajello, M, Albert, A, Allafort, A, Atwood, WB, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Bechtol, K, Bellazzini, R, Bloom, ED, Bonamente, E, Bottacini, E, Brandt, TJ, Bregeon, J, Brigida, M, Bruel, P, Buehler, R, Buson, S, Caliandro, GA, Cameron, RA, Caraveo, PA, Cavazzuti, E, Chaves, RCG, Chiang, J, Chiaro, G, Ciprini, S, Claus, R, Cohen-Tanugi, J, Conrad, J, D'Ammando, F, De Angelis, A, De Palma, F, Dermer, CD, Digel, SW, Drell, PS, Drlica-Wagner, A, Favuzzi, C, Franckowiak, A, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Germani, S, Giglietto, N, Giordano, F, Giroletti, M, Godfrey, G, Gomez-Vargas, GA, Grenier, IA, Guiriec, S, Gustafsson, M, Hadasch, D, Hayashida, M, Hewitt, J, Hughes, RE, Jeltema, TE, Jóhannesson, G, Johnson, AS, Kamae, T, Kataoka, J, Knödlseder, J, Kuss, M, Lande, J, Larsson, S, Latronico, L, Garde, ML, Longo, F, Loparco, F, Lovellette, MN, Lubrano, P, Mayer, M, Mazziotta, MN, McEnery, JE, Michelson, PF, Mitthumsiri, W, Mizuno, T, Monzani, ME, Morselli, A, Moskalenko, IV, Murgia, S, Nemmen, R, Nuss, E, Ohsugi, T, Orienti, M, Orlando, E, Ormes, JF, Perkins, JS, Pesce-Rollins, M, Piron, F, Pivato, G, Rainò, S, Rando, R, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Ruan, J, Sánchez-Conde, M, Schulz, A, Sgrò, C, Siskind, EJ, Spandre, G, Spinelli, P, Storm, E, Strong, AW, Suson, DJ, Takahashi, H, Thayer, JG, Thayer, JB, Thompson, DJ, Tibaldo, L, Tinivella, M, Torres, DF, Troja, E, Uchiyama, Y, Usher, TL, Vandenbroucke, J, Vianello, G, Vitale, V, Winer, BL, Wood, KS, Zimmer, S, Pinzke, A & Pfrommer, C 2014, 'Search for cosmic-ray-induced gamma-ray emission in galaxy clusters', Astrophysical Journal, vol. 787, no. 1, 18. https://doi.org/10.1088/0004-637X/787/1/18

@article{73389a0744294fc588174943589e17ac,

title = "Search for cosmic-ray-induced gamma-ray emission in galaxy clusters",

abstract = "Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic interactions give rise to neutral pions which decay into γ rays that are potentially observable with the Large Area Telescope (LAT) on board the Fermi space telescope. We present a joint likelihood analysis searching for spatially extended γ-ray emission at the locations of 50 galaxy clusters in four years of Fermi-LAT data under the assumption of the universal cosmic-ray (CR) model proposed by Pinzke & Pfrommer. We find an excess at a significance of 2.7σ, which upon closer inspection, however, is correlated to individual excess emission toward three galaxy clusters: A400, A1367, and A3112. We discuss these cases in detail and conservatively attribute the emission to unmodeled background systems (for example, radio galaxies within the clusters).Through the combined analysis of 50 clusters, we exclude hadronic injection efficiencies in simple hadronic models above 21% and establish limits on the CR to thermal pressure ratio within the virial radius, R 200, to be below 1.25%-1.4% depending on the morphological classification. In addition, we derive new limits on the γ-ray flux from individual clusters in our sample.",

keywords = "Galaxies: clusters: intracluster medium, gamma rays: galaxies: clusters",

author = "M. Ackermann and M. Ajello and A. Albert and A. Allafort and Atwood, {W. B.} and L. Baldini and J. Ballet and G. Barbiellini and D. Bastieri and K. Bechtol and R. Bellazzini and Bloom, {E. D.} and E. Bonamente and E. Bottacini and Brandt, {T. J.} and J. Bregeon and M. Brigida and P. Bruel and R. Buehler and S. Buson and Caliandro, {G. A.} and Cameron, {R. A.} and Caraveo, {P. A.} and E. Cavazzuti and Chaves, {R. C.G.} and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and J. Conrad and F. D'Ammando and {De Angelis}, A. and {De Palma}, F. and Dermer, {C. D.} and Digel, {S. W.} and Drell, {P. S.} and A. Drlica-Wagner and C. Favuzzi and A. Franckowiak and S. Funk and P. Fusco and F. Gargano and D. Gasparrini and S. Germani and N. Giglietto and F. Giordano and M. Giroletti and G. Godfrey and Gomez-Vargas, {G. A.} and Grenier, {I. A.} and S. Guiriec and M. Gustafsson and D. Hadasch and M. Hayashida and J. Hewitt and Hughes, {R. E.} and Jeltema, {T. E.} and G. J{\'o}hannesson and Johnson, {A. S.} and T. Kamae and J. Kataoka and J. Kn{\"o}dlseder and M. Kuss and J. Lande and S. Larsson and L. Latronico and Garde, {M. Llena} and F. Longo and F. Loparco and Lovellette, {M. N.} and P. Lubrano and M. Mayer and Mazziotta, {M. N.} and McEnery, {J. E.} and Michelson, {P. F.} and W. Mitthumsiri and T. Mizuno and Monzani, {M. E.} and A. Morselli and Moskalenko, {I. V.} and S. Murgia and R. Nemmen and E. Nuss and T. Ohsugi and M. Orienti and E. Orlando and Ormes, {J. F.} and Perkins, {J. S.} and M. Pesce-Rollins and F. Piron and G. Pivato and S. Rain{\`o} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and J. Ruan and M. S{\'a}nchez-Conde and A. Schulz and C. Sgr{\`o} and Siskind, {E. J.} and G. Spandre and P. Spinelli and E. Storm and Strong, {A. W.} and Suson, {D. J.} and H. Takahashi and Thayer, {J. G.} and Thayer, {J. B.} and Thompson, {D. J.} and L. Tibaldo and M. Tinivella and Torres, {D. F.} and E. Troja and Y. Uchiyama and Usher, {T. L.} and J. Vandenbroucke and G. Vianello and V. Vitale and Winer, {B. L.} and Wood, {K. S.} and S. Zimmer and A. Pinzke and C. Pfrommer",

year = "2014",

month = may,

day = "20",

doi = "10.1088/0004-637X/787/1/18",

language = "English",

volume = "787",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

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TY - JOUR

T1 - Search for cosmic-ray-induced gamma-ray emission in galaxy clusters

AU - Ackermann, M.

AU - Ajello, M.

AU - Albert, A.

AU - Allafort, A.

AU - Atwood, W. B.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Bastieri, D.

AU - Bechtol, K.

AU - Bellazzini, R.

AU - Bloom, E. D.

AU - Bonamente, E.

AU - Bottacini, E.

AU - Brandt, T. J.

AU - Bregeon, J.

AU - Brigida, M.

AU - Bruel, P.

AU - Buehler, R.

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caraveo, P. A.

AU - Cavazzuti, E.

AU - Chaves, R. C.G.

AU - Chiang, J.

AU - Chiaro, G.

AU - Ciprini, S.

AU - Claus, R.

AU - Cohen-Tanugi, J.

AU - Conrad, J.

AU - D'Ammando, F.

AU - De Angelis, A.

AU - De Palma, F.

AU - Dermer, C. D.

AU - Digel, S. W.

AU - Drell, P. S.

AU - Drlica-Wagner, A.

AU - Favuzzi, C.

AU - Franckowiak, A.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gasparrini, D.

AU - Germani, S.

AU - Giglietto, N.

AU - Giordano, F.

AU - Giroletti, M.

AU - Godfrey, G.

AU - Gomez-Vargas, G. A.

AU - Grenier, I. A.

AU - Guiriec, S.

AU - Gustafsson, M.

AU - Hadasch, D.

AU - Hayashida, M.

AU - Hewitt, J.

AU - Hughes, R. E.

AU - Jeltema, T. E.

AU - Jóhannesson, G.

AU - Johnson, A. S.

AU - Kamae, T.

AU - Kataoka, J.

AU - Knödlseder, J.

AU - Kuss, M.

AU - Lande, J.

AU - Larsson, S.

AU - Latronico, L.

AU - Garde, M. Llena

AU - Longo, F.

AU - Loparco, F.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Mayer, M.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Michelson, P. F.

AU - Mitthumsiri, W.

AU - Mizuno, T.

AU - Monzani, M. E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nemmen, R.

AU - Nuss, E.

AU - Ohsugi, T.

AU - Orienti, M.

AU - Orlando, E.

AU - Ormes, J. F.

AU - Perkins, J. S.

AU - Pesce-Rollins, M.

AU - Piron, F.

AU - Pivato, G.

AU - Rainò, S.

AU - Rando, R.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Ruan, J.

AU - Sánchez-Conde, M.

AU - Schulz, A.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Spandre, G.

AU - Spinelli, P.

AU - Storm, E.

AU - Strong, A. W.

AU - Suson, D. J.

AU - Takahashi, H.

AU - Thayer, J. G.

AU - Thayer, J. B.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Tinivella, M.

AU - Torres, D. F.

AU - Troja, E.

AU - Uchiyama, Y.

AU - Usher, T. L.

AU - Vandenbroucke, J.

AU - Vianello, G.

AU - Vitale, V.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Zimmer, S.

AU - Pinzke, A.

AU - Pfrommer, C.

PY - 2014/5/20

Y1 - 2014/5/20

N2 - Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic interactions give rise to neutral pions which decay into γ rays that are potentially observable with the Large Area Telescope (LAT) on board the Fermi space telescope. We present a joint likelihood analysis searching for spatially extended γ-ray emission at the locations of 50 galaxy clusters in four years of Fermi-LAT data under the assumption of the universal cosmic-ray (CR) model proposed by Pinzke & Pfrommer. We find an excess at a significance of 2.7σ, which upon closer inspection, however, is correlated to individual excess emission toward three galaxy clusters: A400, A1367, and A3112. We discuss these cases in detail and conservatively attribute the emission to unmodeled background systems (for example, radio galaxies within the clusters).Through the combined analysis of 50 clusters, we exclude hadronic injection efficiencies in simple hadronic models above 21% and establish limits on the CR to thermal pressure ratio within the virial radius, R 200, to be below 1.25%-1.4% depending on the morphological classification. In addition, we derive new limits on the γ-ray flux from individual clusters in our sample.

AB - Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic interactions give rise to neutral pions which decay into γ rays that are potentially observable with the Large Area Telescope (LAT) on board the Fermi space telescope. We present a joint likelihood analysis searching for spatially extended γ-ray emission at the locations of 50 galaxy clusters in four years of Fermi-LAT data under the assumption of the universal cosmic-ray (CR) model proposed by Pinzke & Pfrommer. We find an excess at a significance of 2.7σ, which upon closer inspection, however, is correlated to individual excess emission toward three galaxy clusters: A400, A1367, and A3112. We discuss these cases in detail and conservatively attribute the emission to unmodeled background systems (for example, radio galaxies within the clusters).Through the combined analysis of 50 clusters, we exclude hadronic injection efficiencies in simple hadronic models above 21% and establish limits on the CR to thermal pressure ratio within the virial radius, R 200, to be below 1.25%-1.4% depending on the morphological classification. In addition, we derive new limits on the γ-ray flux from individual clusters in our sample.

KW - Galaxies: clusters: intracluster medium

KW - gamma rays: galaxies: clusters

UR - http://www.scopus.com/inward/record.url?scp=84899918649&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899918649&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/787/1/18

DO - 10.1088/0004-637X/787/1/18

M3 - Article

AN - SCOPUS:84899918649

SN - 0004-637X

VL - 787

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 18

ER -

Search for cosmic-ray-induced gamma-ray emission in galaxy clusters

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