Search for Magnetically Broadened Cascade Emission from Blazars with VERITAS

被引：40

作者：

Archambault, S. ^{[1
]}

Archer, A. ^{[2
]}

Benbow, W. ^{[3
]}

Buchovecky, M. ^{[4
]}

Bugaev, V. ^{[2
]}

Cerruti, M. ^{[3
]}

Connolly, M. P. ^{[5
]}

Cui, W. ^{[6
,7
,8
]}

Falcone, A. ^{[9
]}

Alonso, M. Fernandez ^{[10
]}

Finley, J. P. ^{[6
]}

Fleischhack, H. ^{[11
]}

Fortson, L. ^{[12
]}

Furniss, A. ^{[13
]}

Griffin, S. ^{[1
]}

Hutten, M. ^{[11
]}

Hervet, O. ^{[14
,15
]}

Holder, J. ^{[16
,17
]}

Humensky, T. B. ^{[18
]}

Johnson, C. A. ^{[14
,15
]}

Kaaret, P. ^{[19
]}

Kar, P. ^{[20
]}

Kieda, D. ^{[20
]}

Krause, M. ^{[11
]}

Krennrich, F. ^{[21
]}

Lang, M. J. ^{[5
]}

Lin, T. T. Y. ^{[1
]}

Maier, G. ^{[11
]}

McArthur, S. ^{[6
]}

Moriarty, P. ^{[5
]}

Nieto, D. ^{[18
]}

O'Brien, S. ^{[22
]}

Ong, R. A. ^{[4
]}

Otte, A. N. ^{[23
,24
]}

Pohl, M. ^{[11
,25
]}

Popkow, A. ^{[4
]}

Pueschel, E. ^{[22
]}

Quinn, J. ^{[22
]}

Ragan, K. ^{[1
]}

Reynolds, P. T. ^{[26
]}

Richards, G. T. ^{[23
,24
]}

Roache, E. ^{[3
]}

Rovero, A. C. ^{[10
]}

Sadeh, I. ^{[11
]}

Shahinyan, K. ^{[12
]}

Staszak, D. ^{[27
]}

Telezhinsky, I. ^{[25
]}

Tyler, J. ^{[1
]}

Wakely, S. P. ^{[27
]}

Weinstein, A. ^{[21
]}

机构：

[1] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[2] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[3] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA

[4] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[5] Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland

[6] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[7] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[8] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China

[9] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[10] UBA, CONICET, IAFE, CC 67,Suc 28,C1428ZAA, Buenos Aires, DF, Argentina

[11] DESY, Platanenallee 6, D-15738 Zeuthen, Germany

[12] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[13] Calif State Univ East Bay, Dept Phys, Hayward, CA 94542 USA

[14] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[15] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

[16] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[17] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[18] Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA

[19] Univ Iowa, Dept Phys & Astron, Van Allen Hall, Iowa City, IA 52242 USA

[20] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

[21] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[22] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

[23] Georgia Inst Technol, Sch Phys, 837 State St NW, Atlanta, GA 30332 USA

[24] Georgia Inst Technol, Ctr Relativist Astrophys, 837 State St NW, Atlanta, GA 30332 USA

[25] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

[26] Cork Inst Technol, Dept Phys Sci, Cork, Ireland

[27] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

[28] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 835卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

BL Lacertae objects: general; galaxies: active; gamma rays: galaxies; magnetic fields; EXTRAGALACTIC BACKGROUND LIGHT; ACTIVE GALACTIC NUCLEI; GAMMA-RAY OBSERVATIONS; LARGE-AREA TELESCOPE; PAIR HALOS; COSMIC VOIDS; TEV BLAZARS; FIELDS; RADIATION; UNIVERSE;

D O I：

10.3847/1538-4357/835/2/288

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for magnetically broadened gamma-ray emission around active galactic nuclei (AGNs), using VERITAS observations of seven hard-spectrum blazars. A cascade process occurs when multi-TeV gamma-rays from an AGN interact with extragalactic background light (EBL) photons to produce electron-positron pairs, which then interact with cosmic microwave background photons via inverse-Compton scattering to produce gamma-rays. Due to the deflection of the electron- positron pairs, a non-zero intergalactic magnetic field (IGMF) would potentially produce detectable effects on the angular distribution of the cascade emission. In particular, an angular broadening compared to the unscattered emission could occur. Through non-detection of angularly broadened emission from 1ES 1218 vertical bar 304, the source with the largest predicted cascade fraction, we exclude a range of IGMF strengths around 10(-14) G at the 95% confidence level. The extent of the exclusion range varies with the assumptions made about the intrinsic spectrum of 1ES. 1218+304 and the EBL model used in the simulation of the cascade process. All of the sources are used to set limits on the flux due to extended emission.

引用

页数：12

共 48 条

[1] Search for extended γ-ray emission around AGN with HESS and Fermi-LAT [J].

Abramowski, A. ;

Aharonian, F. ;

Benkhali, F. Ait ;

Akhperjanian, A. G. ;

Anguener, E. ;

Anton, G. ;

Backes, M. ;

Balenderan, S. ;

Balzer, A. ;

Barnacka, A. ;

Becherini, Y. ;

Tjus, J. Becker ;

Bernloehr, K. ;

Birsin, E. ;

Bissaldi, E. ;

Biteau, J. ;

Boettcher, M. ;

Boisson, C. ;

Bolmont, J. ;

Bordas, P. ;

Brucker, J. ;

Brun, F. ;

Brun, P. ;

Bulik, T. ;

Carrigan, S. ;

Casanova, S. ;

Chadwick, P. M. ;

Chalme-Calvet, R. ;

Chaves, R. C. G. ;

Cheesebrough, A. ;

Chretien, M. ;

Colafrancesco, S. ;

Cologna, G. ;

Conrad, J. ;

Couturier, C. ;

Cui, Y. ;

Djannati-Atai, A. ;

Domainko, W. ;

Drury, L. O'C. ;

Dubus, G. ;

Dutson, K. ;

Dyks, J. ;

Dyrda, M. ;

Edwards, T. ;

Egberts, K. ;

Eger, P. ;

Espigat, P. ;

Farnier, C. ;

Fegan, S. ;

Feinstein, F. .

ASTRONOMY & ASTROPHYSICS, 2014, 562

[2] Introducing the CTA concept [J].

Acharya, B. S. ;

Actis, M. ;

Aghajani, T. ;

Agnetta, G. ;

Aguilar, J. ;

Aharonian, F. ;

Ajello, M. ;

Akhperjanian, A. ;

Alcubierre, M. ;

Aleksic, J. ;

Alfaro, R. ;

Aliu, E. ;

Allafort, A. J. ;

Allan, D. ;

Allekotte, I. ;

Amato, E. ;

Anderson, J. ;

Anguener, E. O. ;

Antonelli, L. A. ;

Antoranz, P. ;

Aravantinos, A. ;

Arlen, T. ;

Armstrong, T. ;

Arnaldi, H. ;

Arrabito, L. ;

Asano, K. ;

Ashton, T. ;

Asorey, H. G. ;

Awane, Y. ;

Baba, H. ;

Babic, A. ;

Baby, N. ;

Baehr, J. ;

Bais, A. ;

Baixeras, C. ;

Bajtlik, S. ;

Balbo, M. ;

Balis, D. ;

Balkowski, C. ;

Bamba, A. ;

Bandiera, R. ;

Barber, A. ;

Barbier, C. ;

Barcelo, M. ;

Barnacka, A. ;

Barnstedt, J. ;

Barres de Almeida, U. ;

Barrio, J. A. ;

Basili, A. ;

Basso, S. .

ASTROPARTICLE PHYSICS, 2013, 43 :3-18

[3] THE THIRD CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE [J].

Ackermann, M. ;

Ajello, M. ;

Atwood, W. B. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Gonzalez, J. Becerra ;

Bellazzini, R. ;

Bissaldi, E. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bnino, R. ;

Bottagini, E. ;

Brandt, T. J. ;

Bregeon, J. ;

Britto, R. J. ;

Bruel, P. ;

Buehler, R. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caragiulo, M. ;

Caraveo, P. A. ;

Careenter, B. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Charles, E. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Chiaro, G. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Cominsky, L. R. ;

Conrad, J. ;

Cutini, S. ;

D'Abrusco, R. ;

D'Ammando, F. ;

de Angelis, A. ;

Desiante, R. ;

Digel, S. W. ;

Di Venere, L. ;

Drell, P. S. ;

FAvuzzi, C. ;

Fegan, S. J. ;

Ferrara, E. C. ;

Finke, J. .

ASTROPHYSICAL JOURNAL, 2015, 810 (01)

[4] DETERMINATION OF THE POINT-SPREAD FUNCTION FOR THE FERMI LARGE AREA TELESCOPE FROM ON-ORBIT DATA AND LIMITS ON PAIR HALOS OF ACTIVE GALACTIC NUCLEI [J].

Ackermann, M. ;

Ajello, M. ;

Allafort, A. ;

Asano, K. ;

Atwood, W. B. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bottacini, E. ;

Brandt, T. J. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Burnett, T. H. ;

Busetto, G. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cecchi, C. ;

Charles, E. ;

Chaty, S. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Cillis, A. N. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Colafrancesco, S. ;

Conrad, J. ;

Cutini, S. ;

D'Ammando, F. ;

de Palma, F. ;

Dermer, C. D. ;

do Couto e Silva, E. ;

Drell, S. ;

Drlica-Wagner, A. ;

Dubois, R. ;

Favuzzi, C. ;

Fegan, S. J. ;

Ferrara, E. C. .

ASTROPHYSICAL JOURNAL, 2013, 765 (01)

[5] Planck 2015 results XIX. Constraints on primordial magnetic fields [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Arroja, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. ;

de Rosa, A. ;

de Zotti, G. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[6]

Ade PAR, 2015, PHYS REV D, V92, DOI [10.1103/PhysRevD.92.123509, 10.1103/PhysRevC.92.044915]

[7] VERY-HIGH-ENERGY GAMMA-RAYS FROM ACTIVE GALACTIC NUCLEI - CASCADING ON THE COSMIC BACKGROUND-RADIATION FIELDS AND THE FORMATION OF PAIR HALOS [J].

AHARONIAN, FA ;

COPPI, PS ;

VOLK, HJ .

ASTROPHYSICAL JOURNAL, 1994, 423 (01) :L5-L8

[8] Search for an extended VHE γ-ray emission from Mrk 421 and Mrk 501 with the MAGIC Telescope [J].

Aleksic, J. ;

Antonelli, L. A. ;

Antoranz, P. ;

Backes, M. ;

Baixeras, C. ;

Barrio, J. A. ;

Bastieri, D. ;

Becerra Gonzalez, J. ;

Bednarek, W. ;

Berdyugin, A. ;

Berger, K. ;

Bernardini, E. ;

Biland, A. ;

Blanch, O. ;

Bock, R. K. ;

Bonnoli, G. ;

Bordas, P. ;

Tridon, D. Borla ;

Bosch-Ramon, V. ;

Bose, D. ;

Braun, I. ;

Bretz, T. ;

Britzger, D. ;

Camara, M. ;

Carmona, E. ;

Carosi, A. ;

Colin, P. ;

Commichau, S. ;

Contreras, J. L. ;

Cortina, J. ;

Costado, M. T. ;

Covino, S. ;

Dazzi, F. ;

De Angelis, A. ;

De Cea del Pozo, E. ;

De los Reyes, R. ;

De Lotto, B. ;

De Maria, M. ;

De Sabata, F. ;

Delgado Mendez, C. ;

Doert, M. ;

Dominguez, A. ;

Prester, D. Dominis ;

Dorner, D. ;

Doro, M. ;

Elsaesser, D. ;

Errando, M. ;

Ferenc, D. ;

Fonseca, M. V. ;

Font, L. .

ASTRONOMY & ASTROPHYSICS, 2010, 524

[9] INTERGALACTIC MAGNETIC FIELDS AND GAMMA-RAY OBSERVATIONS OF EXTREME TeV BLAZARS [J].

Arlen, Timothy C. ;

Vassilev, Vladimir V. ;

Weisgarber, Thomas ;

Wakely, Scott P. ;

Shafi, S. Yusef .

ASTROPHYSICAL JOURNAL, 2014, 796 (01)

[10] Magnetic field seeding by galactic winds [J].

Bertone, Serena ;

Vogt, Corina ;

Ensslin, Torsten .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 370 (01) :319-330

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