ACTIVE GALACTIC NUCLEI, NEUTRINOS, AND INTERACTING COSMIC RAYS IN NGC 253 AND NGC 1068

被引：58

作者：

Yoast-Hull, Tova M. ^{[1
,2
]}

Gallagher, J. S., III ^{[3
]}

Zweibel, Ellen G. ^{[1
,2
,3
]}

Everett, John E. ^{[4
,5
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Univ Wisconsin, Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA

[3] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[4] Northwestern Univ, Ctr Interdisciplinary Explorat & Res Astrophys, Evanston, IL 60208 USA

[5] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 780卷 / 02期

基金：

美国国家科学基金会;

关键词：

cosmic rays; galaxies:; individual; (NGC; 253; NGC; 1068); galaxies: starburst; gamma rays: galaxies; radio continuum: galaxies; SUBARCSECOND RADIO STRUCTURE; HIGH-ENERGY NEUTRINOS; STAR-FORMATION; MOLECULAR GAS; SUPERNOVA-REMNANTS; H-ALPHA; X-RAY; STARBURST; EMISSION; GALAXIES;

D O I：

10.1088/0004-637X/780/2/137

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The galaxies M82, NGC 253, NGC 1068, and NGC 4945 have been detected in gamma-rays by Fermi. Previously, we developed and tested a model for cosmic-ray interactions in the starburst galaxy M82. Now, we aim to explore the differences between starburst and active galactic nucleus (AGN) environments by applying our self-consistent model to the starburst galaxy NGC 253 and the Seyfert galaxy NGC 1068. Assuming a constant cosmic-ray acceleration efficiency by supernova remnants with Milky Way parameters, we calculate the cosmic-ray proton and primary and secondary electron/positron populations, predict the radio and gamma-ray spectra, and compare with published measurements. We find that our models easily fit the observed gamma-ray spectrum for NGC 253 while constraining the cosmic-ray source spectral index and acceleration efficiency. However, we encountered difficultly modeling the observed radio data and constraining the speed of the galactic wind and the magnetic field strength, unless the gas mass is less than currently preferred values. Additionally, our starburst model consistently underestimates the observed gamma-ray flux and overestimates the radio flux for NGC 1068; these issues would be resolved if the AGN is the primary source of gamma-rays. We discuss the implications of these results and make predictions for the neutrino fluxes for both galaxies.

引用

页数：10

共 64 条

[1] TIME-INTEGRATED SEARCHES FOR POINT-LIKE SOURCES OF NEUTRINOS WITH THE 40-STRING IceCube DETECTOR [J].

Abbasi, R. ;

Abdou, Y. ;

Abu-Zayyad, T. ;

Adams, J. ;

Aguilar, J. A. ;

Ahlers, M. ;

Andeen, K. ;

Auffenberg, J. ;

Bai, X. ;

Baker, M. ;

Barwick, S. W. ;

Bay, R. ;

Alba, J. L. Bazo ;

Beattie, K. ;

Beatty, J. J. ;

Bechet, S. ;

Becker, J. K. ;

Becker, K-H ;

Benabderrahmane, M. L. ;

BenZvi, S. ;

Berdermann, J. ;

Berghaus, P. ;

Berley, D. ;

Bernardini, E. ;

Bertrand, D. ;

Besson, D. Z. ;

Bissok, M. ;

Blaufuss, E. ;

Blumenthal, J. ;

Boersma, D. J. ;

Bohm, C. ;

Bose, D. ;

Boeser, S. ;

Botner, O. ;

Braun, J. ;

Brown, A. M. ;

Buitink, S. ;

Carson, M. ;

Chirkin, D. ;

Christy, B. ;

Clem, J. ;

Clevermann, F. ;

Cohen, S. ;

Colnard, C. ;

Cowen, D. F. ;

D'Agostino, M. V. ;

Danninger, M. ;

Daughhetee, J. ;

Davis, J. C. ;

De Clercq, C. .

ASTROPHYSICAL JOURNAL, 2011, 732 (01)

[2] SPECTRAL ANALYSIS AND INTERPRETATION OF THE γ-RAY EMISSION FROM THE STARBURST GALAXY NGC 253 [J].

Abramowski, A. ;

Acero, F. ;

Aharonian, F. ;

Akhperjanian, A. G. ;

Anton, G. ;

Balzer, A. ;

Barnacka, A. ;

Becherini, Y. ;

Becker, J. ;

Bernloehr, K. ;

Birsin, E. ;

Biteau, J. ;

Bochow, A. ;

Boisson, C. ;

Bolmont, J. ;

Bordas, P. ;

Brucker, J. ;

Brun, F. ;

Brun, P. ;

Bulik, T. ;

Buesching, I. ;

Carrigan, S. ;

Casanova, S. ;

Cerruti, M. ;

Chadwick, P. M. ;

Charbonnier, A. ;

Chaves, R. C. G. ;

Cheesebrough, A. ;

Cologna, G. ;

Conrad, J. ;

Couturier, C. ;

Dalton, M. ;

Daniel, M. K. ;

Davids, I. D. ;

Degrange, B. ;

Deil, C. ;

Dickinson, H. J. ;

Djannati-Atai, A. ;

Domainko, W. ;

Drury, L. O'C. ;

Dubus, G. ;

Dutson, K. ;

Dyks, J. ;

Dyrda, M. ;

Egberts, K. ;

Eger, P. ;

Espigat, P. ;

Fallon, L. ;

Fegan, S. ;

Feinstein, F. .

ASTROPHYSICAL JOURNAL, 2012, 757 (02)

[3] GeV OBSERVATIONS OF STAR-FORMING GALAXIES WITH THE FERMI LARGE AREA TELESCOPE [J].

Ackermann, M. ;

Ajello, M. ;

Allafort, A. ;

Baldini, L. ;

Ballet, J. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Berenji, B. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bouvier, A. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cecchi, C. ;

Charles, E. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Cillis, A. N. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

Cutini, S. ;

de Palma, F. ;

Dermer, C. D. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Drlica-Wagner, A. ;

Favuzzi, C. ;

Fegan, S. J. ;

Fortin, P. ;

Fukazawa, Y. ;

Funk, S. ;

Fusco, P. ;

Gargano, F. ;

Gasparrini, D. ;

Germani, S. ;

Giglietto, N. ;

Giordano, F. .

ASTROPHYSICAL JOURNAL, 2012, 755 (02)

[4] High energy neutrinos from astrophysical accelerators of cosmic ray nuclei [J].

Anchordoqui, Luis A. ;

Hooper, Dan ;

Sarkar, Subir ;

Taylor, Andrew M. .

ASTROPARTICLE PHYSICS, 2008, 29 (01) :1-13

[5] BREMSSTRAHLUNG, SYNCHROTRON RADIATION, AND COMPTON SCATTERING OF HIGH-ENERGY ELECTRONS TRAVERSING DILUTE GASES [J].

BLUMENTHAL, GR ;

GOULD, RJ .

REVIEWS OF MODERN PHYSICS, 1970, 42 (02) :237-+

[6] High spatial resolution imaging of NGC 1068 in the mid-infrared [J].

Bock, JJ ;

Neugebauer, G ;

Matthews, K ;

Soifer, BT ;

Becklin, EE ;

Ressler, M ;

Marsh, K ;

Werner, MW ;

Egami, E ;

Blandford, R .

ASTRONOMICAL JOURNAL, 2000, 120 (06) :2904-2919

[7] COSMIC RAY SAMPLING OF A CLUMPY INTERSTELLAR MEDIUM [J].

Boettcher, Erin ;

Zweibel, Ellen G. ;

Yoast-Hull, Tova M. ;

Gallagher, J. S., III .

ASTROPHYSICAL JOURNAL, 2013, 779 (01)

[8]

Carilli CL, 1996, ASTRON ASTROPHYS, V305, P402

[9] RADIO-EMISSION FROM NORMAL GALAXIES [J].

CONDON, JJ .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1992, 30 :575-611

[10] SHAKEN, NOT STIRRED: THE DISRUPTED DISK OF THE STARBURST GALAXY NGC 253 [J].

Davidge, T. J. .

ASTROPHYSICAL JOURNAL, 2010, 725 (01) :1342-1365

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