CLUSTERING OF γ-RAY-SELECTED 2LAC FERMI BLAZARS

被引：15

作者：

Allevato, V. ^{[1
,2
]}

Finoguenov, A. ^{[1
,2
]}

Cappelluti, N. ^{[2
,3
]}

机构：

[1] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

[2] Univ Maryland, Baltimore, MD 21250 USA

[3] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 797卷 / 02期

关键词：

dark matter; galaxies: active; large-scale structure of universe; surveys; X-rays: general Online only-material: color figures; ACTIVE GALACTIC NUCLEI; SUPERMASSIVE BLACK-HOLES; WIDE-FIELD SURVEY; X-RAY; DARK-MATTER; COSMIC EVOLUTION; REDSHIFT SURVEY; HOST GALAXIES; RADIO-SOURCES; AGN;

D O I：

10.1088/0004-637X/797/2/96

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first measurement of the projected correlation function of 485 gamma-ray-selected blazars, divided into 175 BL Lacertae (BL Lacs) and 310 flat-spectrum radio quasars (FSRQs) detected in the 2 year all-sky survey by the Fermi-Large Area Telescope. We find that Fermi BL Lacs and FSRQs reside in massive dark matter halos (DMHs) with logM(h) = 13.35(+) (0.20)(-0.14) and logM(h) = 13.40(+) (0.15)(-0.19)h(-) M-1(circle dot), respectively, at low (z similar to 0.4) and high (z similar to 1.2) redshift. In terms of clustering properties, these results suggest that BL Lacs and FSRQs are similar objects residing in the same dense environment typical of galaxy groups, despite their different spectral energy distributions, power, and accretion rates. We find no difference in the typical bias and hosting halo mass between Fermi blazars and radio-loud active galactic nuclei (AGNs), supporting the unification scheme simply equating radio-loud objects with misaligned blazar counterparts. This similarity in terms of the typical environment they preferentially live in, suggests that blazars tend to occupy the center of DMHs, as already pointed out for radio-loud AGNs. This implies, in light of several projects looking for the gamma-ray emission from DM annihilation in galaxy clusters, a strong contamination from blazars to the expected signal from DM annihilation.

引用

页数：6

共 58 条

[1] FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG [J].

Abdo, A. A. ;

Ackermann, M. ;

Ajello, M. ;

Allafort, A. ;

Antolini, E. ;

Atwood, W. B. ;

Axelsson, M. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Baughman, B. M. ;

Bechtol, K. ;

Bellazzini, R. ;

Belli, F. ;

Berenji, B. ;

Bisello, D. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonamente, E. ;

Bonnell, J. ;

Borgland, A. W. ;

Bouvier, A. ;

Bregeon, J. ;

Brez, A. ;

Brigida, M. ;

Bruel, P. ;

Burnett, T. H. ;

Busetto, G. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Campana, R. ;

Canadas, B. ;

Caraveo, P. A. ;

Carrigan, S. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Ceccanti, M. ;

Cecchi, C. ;

Celik, Oe. ;

Charles, E. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Cillis, A. N. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2010, 188 (02) :405-436

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

Ackermann, M. ;

Ajello, M. ;

Allafort, A. ;

Antolini, E. ;

Atwood, W. B. ;

Axelsson, M. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Berenji, B. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bottacini, E. ;

Bouvier, A. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Burnett, T. H. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Charles, E. ;

Cheung, C. C. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

Costamante, L. ;

Cutini, S. ;

de Angelis, A. ;

de Palma, F. ;

Dermer, C. D. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Dubois, R. ;

Escande, L. ;

Favuzzi, C. ;

Fegan, S. J. .

ASTROPHYSICAL JOURNAL, 2011, 743 (02)

[3] THE XMM-NEWTON WIDE FIELD SURVEY IN THE COSMOS FIELD: REDSHIFT EVOLUTION OF AGN BIAS AND SUBDOMINANT ROLE OF MERGERS IN TRIGGERING MODERATE-LUMINOSITY AGNs AT REDSHIFTS UP TO 2.2 [J].

Allevato, V. ;

Finoguenov, A. ;

Cappelluti, N. ;

Miyaji, T. ;

Hasinger, G. ;

Salvato, M. ;

Brusa, M. ;

Gilli, R. ;

Zamorani, G. ;

Shankar, F. ;

James, J. B. ;

McCracken, H. J. ;

Bongiorno, A. ;

Merloni, A. ;

Peacock, J. A. ;

Silverman, J. ;

Comastri, A. .

ASTROPHYSICAL JOURNAL, 2011, 736 (02)

[4]

[Anonymous], 1980, The large-scale structure of the universe, DOI DOI 10.23943/PRINCETON/9780691209838.001.0001

[5] EXTENDED AND COMPACT EXTRA-GALACTIC RADIO-SOURCES - INTERPRETATION AND THEORY [J].

BLANDFORD, RD ;

REES, MJ .

PHYSICA SCRIPTA, 1978, 17 (03) :265-274

[6]

Cappelluti N., 2012, ADAST, V2012, P25

[7]

Cappelluti N., 2010, APJ, V716, P209

[8] AEGIS: THE CLUSTERING OF X-RAY ACTIVE GALACTIC NUCLEUS RELATIVE TO GALAXIES AT z ∼ 1 [J].

Coil, Alison L. ;

Georgakakis, Antonis ;

Newman, Jeffrey A. ;

Cooper, Michael C. ;

Croton, Darren ;

Davis, Marc ;

Koo, David C. ;

Laird, Elise S. ;

Nandra, Kirpal ;

Weiner, Benjamin J. ;

Willmer, Christopher N. A. ;

Yan, Renbin .

ASTROPHYSICAL JOURNAL, 2009, 701 (02) :1484-1499

[9] The 2dF QSO Redshift Survey - XIV. Structure and evolution from the two-point correlation function [J].

Croom, SM ;

Boyle, BJ ;

Shanks, T ;

Smith, RJ ;

Miller, L ;

Outram, PJ ;

Loaring, NS ;

Hoyle, F ;

da Angela, A .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 356 (02) :415-438

[10] The 2dF-SDSS LRG and QSO survey:: QSO clustering and the L-z degeneracy [J].

da Angela, J. ;

Shanks, T. ;

Croom, S. M. ;

Weilbacher, P. ;

Brunner, R. J. ;

Couch, W. J. ;

Miller, L. ;

Myers, A. D. ;

Nichol, R. C. ;

Pimbblet, K. A. ;

de Propris, R. ;

Richards, G. T. ;

Ross, N. P. ;

Schneider, D. P. ;

Wake, D. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (02) :565-580

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