X-Ray Intraday Variability of Five TeV Blazars with NuSTAR

被引：46

作者：

Pandey, Ashwani ^{[1
,2
]}

Gupta, Alok C. ^{[1
,3
]}

Wiita, Paul J. ^{[4
]}

机构：

[1] Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263002, Nainital, India

[2] DDU Gorakhpur Univ, Dept Phys, Gorakhpur 273009, Uttar Pradesh, India

[3] Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China

[4] Coll New Jersey, Dept Phys, 2000 Pennington Rd, Ewing, NJ 08628 USA

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 841卷 / 02期

基金：

美国国家航空航天局;

关键词：

BL Lacertae objects: general; BL Lacertae objects: individual (1ES 0229+200; Mrk; 421; 501; 1ES; 1959+650; PKS; 2155-304); ACTIVE GALACTIC NUCLEI; BL LACERTAE OBJECTS; SPECTRAL ENERGY-DISTRIBUTION; TURBULENT RELATIVISTIC JETS; CHERENKOV TELESCOPE SYSTEM; EINSTEIN SLEW SURVEY; MRK; 421; PKS; 2155-304; MARKARIAN; 501; OPTICAL VARIABILITY;

D O I：

10.3847/1538-4357/aa705e

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have examined 40 Nuclear Spectroscopic Telescope Array (NuSTAR) light curves (LCs) of five TeV emitting high synchrotron peaked blazars: 1ES 0229+200, Mrk 421, Mrk 501, 1ES 1959+650, and PKS 2155-304. Four of the blazars showed intraday variability in the NuSTAR energy range of 3-79 keV. Using an autocorrelation function analysis we searched for intraday variability timescales in these LCs and found indications of several between 2.5 and 32.8 ks in eight LCs of Mrk 421, a timescale around 8.0 ks for one LC of Mrk 501, and timescales of 29.6 and 57.4 ks in two LCs of PKS 2155-304. The other two blazars' LCs do not show any evidence for intraday variability timescales shorter than the lengths of those observations; however, the data were both sparser and noisier for them. We found positive correlations with zero lag between soft (3-10 keV) and hard (10-79 keV) bands for most of the LCs, indicating that their emissions originate from the same electron population. We examined spectral variability using a hardness ratio analysis and noticed a general "harder-when-brighter" behavior. The 22 LCs of Mrk 421 observed between 2012 July and 2013 April show that this source was in a quiescent state for an extended period of time and then underwent an unprecedented double-peaked outburst while monitored on a daily basis during 2013 April 10-16. We briefly discuss models capable of explaining these blazar emissions.

引用

页数：17

共 110 条

[1] THE STUDY OF TeV VARIABILITY AND THE DUTY CYCLE OF Mrk 421 FROM 3 Yr OF OBSERVATIONS WITH THE MILAGRO OBSERVATORY [J].

Abdo, A. A. ;

Abeysekara, A. U. ;

Allen, B. T. ;

Aune, T. ;

Barber, A. S. ;

Berley, D. ;

Braun, J. ;

Chen, C. ;

Christopher, G. E. ;

Delay, R. S. ;

DeYoung, T. ;

Dingus, B. L. ;

Ellsworth, R. W. ;

Fraija, N. ;

Gonzalez, M. M. ;

Goodman, J. A. ;

Hays, E. ;

Hoffman, C. M. ;

Huentemeyer, P. H. ;

Imran, A. ;

Kolterman, B. E. ;

Linnemann, J. T. ;

Marinelli, A. ;

McEnery, J. E. ;

Morgan, T. ;

Mincer, A. I. ;

Nemethy, P. ;

Patricelli, B. ;

Pretz, J. ;

Ryan, J. M. ;

Parkinson, P. M. Saz ;

Schneider, M. ;

Shoup, A. ;

Sinnis, G. ;

Smith, A. J. ;

Vasileiou, V. ;

Walker, G. P. ;

Williams, D. A. ;

Yodh, G. B. .

ASTROPHYSICAL JOURNAL, 2014, 782 (02)

[2] THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS [J].

Abdo, A. A. ;

Ackermann, M. ;

Agudo, I. ;

Ajello, M. ;

Aller, H. D. ;

Aller, M. F. ;

Angelakis, E. ;

Arkharov, A. A. ;

Axelsson, M. ;

Bach, U. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Baughman, B. M. ;

Bechtol, K. ;

Bellazzini, R. ;

Benitez, E. ;

Berdyugin, A. ;

Berenji, B. ;

Blandford, R. D. ;

Bloom, E. D. ;

Boettcher, M. ;

Bonamente, E. ;

Borgland, A. W. ;

Bregeon, J. ;

Brez, A. ;

Brigida, M. ;

Bruel, P. ;

Burnett, T. H. ;

Burrows, D. ;

Buson, S. ;

Caliandro, G. A. ;

Calzoletti, L. ;

Cameron, R. A. ;

Capalbi, M. ;

Caraveo, P. A. ;

Carosati, D. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Cecchi, C. ;

Celik, Oe. ;

Charles, E. ;

Chaty, S. ;

Chekhtman, A. ;

Chen, W. P. ;

Chiang, J. ;

Chincarini, G. ;

Ciprini, S. ;

Claus, R. .

ASTROPHYSICAL JOURNAL, 2010, 716 (01) :30-70

[3] An exceptional very high energy gamma-ray flare of PKS 2155-304 [J].

Aharonian, F. ;

Akhperjanian, A. G. ;

Bazer-Bachi, A. R. ;

Behera, B. ;

Beilicke, M. ;

Benbow, W. ;

Berge, D. ;

Bernloehr, K. ;

Boisson, C. ;

Bolz, O. ;

Borrel, V. ;

Boutelier, T. ;

Braun, I. ;

Brion, E. ;

Brown, A. M. ;

Buehler, R. ;

Buesching, I. ;

Bulik, T. ;

Carrigan, S. ;

Chadwick, P. M. ;

Clapson, A. C. ;

Chounet, L.-M. ;

Coignet, G. ;

Cornils, R. ;

Costamante, L. ;

Degrange, B. ;

Dickinson, H. J. ;

Djannati-Atai, A. ;

Domainko, W. ;

Drury, L. O'C. ;

Dubus, G. ;

Dyks, J. ;

Egberts, K. ;

Emmanoulopoulos, D. ;

Espigat, P. ;

Farnier, C. ;

Feinstein, F. ;

Fiasson, A. ;

Foerster, A. ;

Fontaine, G. ;

Funk, Seb. ;

Funk, S. ;

Fuessling, M. ;

Gallant, Y. A. ;

Giebels, B. ;

Glicenstein, J. F. ;

Glueck, B. ;

Goret, P. ;

Hadjichristidis, C. ;

Hauser, D. .

ASTROPHYSICAL JOURNAL, 2007, 664 (02) :L71-L74

[4]

Aharonian F, 1997, ASTRON ASTROPHYS, V327, pL5

[5]

Aharonian FA, 1999, ASTRON ASTROPHYS, V349, P11

[6]

Aharonian FA, 1999, ASTRON ASTROPHYS, V342, P69

[7] Long-term multi-wavelength variability and correlation study of Markarian 421 from 2007 to 2009 [J].

Ahnen, M. L. ;

Ansoldi, S. ;

Antonelli, L. A. ;

Antoranz, P. ;

Babic, A. ;

Banerjee, B. ;

Bangale, P. ;

de Almeida, U. Barres ;

Barrio, J. A. ;

Gonzalez, J. Becerra ;

Bednarek, W. ;

Bernardini, E. ;

Biasuzzi, B. ;

Bilandl, A. ;

Blanch, O. ;

Bonnefoy, S. ;

Bonnoli, G. ;

Borracci, F. ;

Bretz, T. ;

Buson, S. ;

Carosi, A. ;

Chatterjee, A. ;

Clavero, R. ;

Colin, P. ;

Colombo, E. ;

Contreras, J. L. ;

Cortina, J. ;

Covino, S. ;

da Vela, P. ;

Dazzi, F. ;

De Angelis, A. ;

De Lotto, B. ;

Wilhelmi, E. de Ona ;

Di Pierro, F. ;

Dominguez, A. ;

Prester, D. Dominis ;

Dorner, D. ;

Doro, M. ;

Einecke, S. ;

Glawion, D. Eisenacher ;

Elsaesser, D. ;

Fernandez-Barral, A. ;

Fidalgo, D. ;

Fonseca, M. V. ;

Font, L. ;

Frantzen, K. ;

Fruck, C. ;

Galindo, D. ;

Lopez, R. J. Garcia ;

Garczarczyk, M. .

ASTRONOMY & ASTROPHYSICS, 2016, 593

[8] Variable very high energy γ-ray emission from Markarian 501 [J].

Albert, J. ;

Aliu, E. ;

Anderhub, H. ;

Antoranz, P. ;

Armada, A. ;

Baixeras, C. ;

Barrio, J. A. ;

Bartko, H. ;

Bastieri, D. ;

Becker, J. K. ;

Bednarek, W. ;

Berger, K. ;

Bigongiari, C. ;

Biland, A. ;

Bock, R. K. ;

Bordas, P. ;

Bosch-Ramon, V. ;

Bretz, T. ;

Britvitch, I. ;

Camara, M. ;

Carmona, E. ;

Chilingarian, A. ;

Coarasa, J. A. ;

Commichau, S. ;

Contreras, J. L. ;

Cortina, J. ;

Costado, M. T. ;

Curtef, V. ;

Danielyan, V. ;

Dazzi, F. ;

De Angelis, A. ;

Delgado, C. ;

de los Reyes, R. ;

De Lotto, B. ;

Domingo-Santamaria, E. ;

Dorner, D. ;

Doro, M. ;

Errando, M. ;

Fagiolini, M. ;

Ferenc, D. ;

Fernandez, E. ;

Firpo, R. ;

Flix, J. ;

Fonseca, M. V. ;

Font, L. ;

Fuchs, M. ;

Galante, N. ;

Garcia-Lopez, R. J. ;

Garczarczyk, M. ;

Gaug, M. .

ASTROPHYSICAL JOURNAL, 2007, 669 (02) :862-883

[9] The 2009 multiwavelength campaign on Mrk 421: Variability and correlation studies [J].

Aleksic, J. ;

Ansokli, S. ;

Antonelli, L. A. ;

Antoranz, P. ;

Babic, A. ;

Bangale, P. ;

de Almeida, U. Barres ;

Barrio, J. A. ;

Gonzalez, J. Becerra ;

Bednarek, W. ;

Berger, K. ;

Bernardini, E. ;

Bilandli, A. ;

Bianch, O. ;

Bock, R. K. ;

Bonnefoy, S. ;

Bonnoli, G. ;

Borracci, F. ;

Bretz, T. ;

Carmona, E. ;

Carosi, A. ;

Fidalgo, D. Carreto ;

Colin, P. ;

Colombo, E. ;

Contreras, J. L. ;

Cortina, J. ;

Covino, S. ;

Da Vela, P. ;

Dazzi, F. ;

De Angelis, A. ;

De Caneva, G. ;

De Lotto, B. ;

Delgado Mendez, C. ;

Doert, M. ;

Dominguez, A. ;

Prester, D. Dominis ;

Dorner, D. ;

Doro, M. ;

Einecke, S. ;

Eisenacher, D. ;

Elsaesser, D. ;

Farina, E. ;

Ferenc, D. ;

Fonseca, M. V. ;

Font, L. ;

Frantzen, K. ;

Fruck, C. ;

Garcia Lopez, R. J. ;

Garczarczyki, M. ;

Garrido Terrats, D. .

ASTRONOMY & ASTROPHYSICS, 2015, 576

[10] Very high energy outburst of Markarian 501 in May 2009 [J].

Aliu, E. ;

Archambault, S. ;

Archer, A. ;

Arlen, T. ;

Aune, T. ;

Barnacka, A. ;

Behera, B. ;

Beilicke, M. ;

Benbow, W. ;

Berger, K. ;

Bird, R. ;

Bottcher, M. ;

Bouvier, A. ;

Buchovecky, M. ;

Buckley, J. H. ;

Bugaev, V. ;

Cardenzana, J. V. ;

Cerruti, M. ;

Cesarini, A. ;

Chen, X. ;

Ciupik, L. ;

Collins-Hughes, E. ;

Connolly, M. P. ;

Cui, W. ;

Dumm, J. ;

Eisch, J. D. ;

Falcone, A. ;

Federici, S. ;

Feng, Q. ;

Finley, J. P. ;

Fleischhack, H. ;

Fortin, P. ;

Fortson, L. ;

Furniss, A. ;

Galante, N. ;

Gall, D. ;

Gillanders, G. H. ;

Griffin, S. ;

Griffiths, S. T. ;

Grube, J. ;

Gyuk, G. ;

Huetten, M. ;

Hakansson, N. ;

Holder, J. ;

Hughes, G. ;

Humensky, T. B. ;

Johnson, C. A. ;

Kaaret, P. ;

Kar, P. ;

Kelley-Hoskins, N. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

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