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Kinetic simulations of relativistic magnetic reconnection with synchrotron and inverse Compton cooling

Part of: Plasma physics under extreme conditions Focus on Plasma Astrophysics

Published online by Cambridge University Press:  25 June 2018

Krzysztof Nalewajko Open the ORCID record for Krzysztof Nalewajko [Opens in a new window] ,
Yajie Yuan  and
Martyna Chruślińska
Krzysztof Nalewajko*
Affiliation:
Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland
Yajie Yuan
Affiliation:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
Martyna Chruślińska
Affiliation:
Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands Astronomical Observatory, University of Warsaw, al. Ujazdowskie 4, 00-478 Warsaw, Poland
*
†Email address for correspondence: knalew@camk.edu.pl
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Abstract

First results are presented from kinetic numerical simulations of relativistic collisionless magnetic reconnection in a pair plasma that include radiation reaction from both synchrotron and inverse Compton (IC) processes, motivated by non-thermal high-energy astrophysical sources, including in particular blazars. These simulations are initiated from a configuration known as ‘ABC fields’ that evolves due to coalescence instability and generates thin current layers in its linear phase. Global radiative efficiencies, instability growth rates, time-dependent radiation spectra, lightcurves, variability statistics and the structure of current layers are investigated for a broad range of initial parameters. We find that the IC radiative signatures are generally similar to the synchrotron signatures. The luminosity ratio of IC to synchrotron spectral components, the Compton dominance, can be modified by more than one order of magnitude with respect to its nominal value. For very short cooling lengths, we find evidence for modification of the temperature profile across the current layers, no systematic compression of plasma density and very consistent profiles of the scalar product $\boldsymbol{E}\boldsymbol{\cdot }\boldsymbol{B}$ of electric field $\boldsymbol{E}$ and magnetic field $\boldsymbol{B}$ . We decompose the profiles of $\boldsymbol{E}\boldsymbol{\cdot }\boldsymbol{B}$ with the use of the Vlasov momentum equation, demonstrating a contribution from radiation reaction at the thickness scale consistent with the temperature profile.

Keywords

astrophysical plasmasplasma simulation

Information

Type
Research Article
Information
Journal of Plasma Physics , Volume 84 , Issue 3 , June 2018 , 755840301
Copyright
© Cambridge University Press 2018 

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References

Abdo, A. A., Ackermann, M., Ajello, M., Antolini, E., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R. et al. 2010 Gamma-ray light curves and variability of bright Fermi-detected blazars. Astrophys. J. 722, 520–542.CrossRefGoogle Scholar
Ackermann, M., Anantua, R., Asano, K., Baldini, L., Barbiellini, G., Bastieri, D., Becerra Gonzalez, J., Bellazzini, R., Bissaldi, E., Blandford, R. D. et al. 2016 Minute-timescale ${>}100$  MeV -Ray Variability during the Giant Outburst of Quasar 3c 279 Observed by Fermi-LAT in 2015 June. Astrophys. J. Lett. 824, L20.CrossRefGoogle Scholar
Ajello, M., Gasparrini, D., Sánchez-Conde, M., Zaharijas, G., Gustafsson, M., Cohen-Tanugi, J., Dermer, C. D., Inoue, Y., Hartmann, D., Ackermann, M. et al. 2015 The origin of the extragalactic gamma-ray background and implications for dark matter annihilation. Astrophys. J. Lett. 800, L27.CrossRefGoogle Scholar
Bessho, N. & Bhattacharjee, A. 2007 Fast collisionless reconnection in electron-positron plasmas. Phys. Plasmas 14 (5), 056503.CrossRefGoogle Scholar
Blandford, R., Yuan, Y., Hoshino, M. & Sironi, L. 2017 Magnetoluminescence. Space Sci. Rev. 207, 291–317.CrossRefGoogle Scholar
Blumenthal, G. R. & Gould, R. J. 1970 Bremsstrahlung, synchrotron radiation, and compton scattering of high-energy electrons traversing dilute gases. Rev. Mod. Phys. 42, 237–271.CrossRefGoogle Scholar
Böttcher, M., Reimer, A., Sweeney, K. & Prakash, A. 2013 Leptonic and hadronic modeling of Fermi-detected blazars. Astrophys. J. 768, 54.CrossRefGoogle Scholar
Buehler, R., Scargle, J. D., Blandford, R. D., Baldini, L., Baring, M. G., Belfiore, A., Charles, E., Chiang, J., D’Ammando, F., Dermer, C. D. et al. 2012 Gamma-ray activity in the Crab Nebula: the exceptional flare of 2011 April. Astrophys. J. 749, 26.CrossRefGoogle Scholar
Cerutti, B., Philippov, A. A. & Spitkovsky, A. 2016 Modelling high-energy pulsar light curves from first principles. Mon. Not. R. Astron. Soc. 457, 2401–2414.CrossRefGoogle Scholar
Cerutti, B., Werner, G. R., Uzdensky, D. A. & Begelman, M. C. 2013 Simulations of particle acceleration beyond the classical synchrotron Burnoff limit in magnetic reconnection: an explanation of the Crab Flares. Astrophys. J. 770, 147.CrossRefGoogle Scholar
Cerutti, B., Werner, G. R., Uzdensky, D. A. & Begelman, M. C. 2014 Three-dimensional relativistic pair plasma reconnection with radiative feedback in the Crab Nebula. Astrophys. J. 782, 104.CrossRefGoogle Scholar
Dombre, T., Frisch, U., Henon, M., Greene, J. M. & Soward, A. M. 1986 Chaotic streamlines in the ABC flows. J. Fluid Mech. 167, 353–391.CrossRefGoogle Scholar
East, W. E., Zrake, J., Yuan, Y. & Blandford, R. D. 2015 Spontaneous decay of periodic magnetostatic equilibria. Phys. Rev. Lett. 115, 095002.CrossRefGoogle ScholarPubMed
Edelson, R. A. & Krolik, J. H. 1988 The discrete correlation function – a new method for analyzing unevenly sampled variability data. Astrophys. J. 333, 646–659.CrossRefGoogle Scholar
Finke, J. D. 2013 Compton dominance and the blazar sequence. Astrophys. J. 763, 134.CrossRefGoogle Scholar
Goyal, A., Stawarz, Ł., Ostrowski, M., Larionov, V., Gopal-Krishna, W. P. J., Joshi, S., Soida, M. & Agudo, I. 2017 Multiwavelength variability study of the classical BL Lac Object PKS 0735+178 on timescales ranging from decades to minutes. Astrophys. J. 837, 127.CrossRefGoogle Scholar
Guo, F., Li, H., Daughton, W. & Liu, Y.-H. 2014 Formation of hard power laws in the energetic particle spectra resulting from relativistic magnetic reconnection. Phys. Rev. Lett. 113, 155005.CrossRefGoogle ScholarPubMed
Hayashida, M., Nalewajko, K., Madejski, G. M., Sikora, M., Itoh, R., Ajello, M., Blandford, R. D., Buson, S., Chiang, J., Fukazawa, Y. et al. 2015 Rapid variability of blazar 3c 279 during flaring states in 2013–2014 with joint Fermi-LAT, NuSTAR, Swift, and ground-based multiwavelength observations. Astrophys. J. 807, 79.CrossRefGoogle Scholar
Hededal, C. B. & Nordlund, Å.2005 Gamma-ray burst synthetic spectra from collisionless shock PIC simulations. Astrophysics arXiv:astro-ph/0511662.Google Scholar
Janiak, M., Sikora, M. & Moderski, R. 2015 Magnetization of jets in luminous blazars. Mon. Not. R. Astron. Soc. 449, 431–439.CrossRefGoogle Scholar
Jones, F. C. 1968 Calculated spectrum of inverse-compton-scattered photons. Phys. Rev. 167, 1159–1169.CrossRefGoogle Scholar
Kagan, D., Nakar, E. & Piran, T. 2016 Beaming of particles and synchrotron radiation in relativistic magnetic reconnection. Astrophys. J. 826, 221.CrossRefGoogle Scholar
Lyutikov, M., Komissarov, S., Sironi, L. & Porth, O. 2018 Particle acceleration in explosive relativistic reconnection events and Crab Nebula gamma-ray flares. J. Plasma Phys. 84 (2), 635840201.CrossRefGoogle Scholar
Lyutikov, M., Sironi, L., Komissarov, S. S. & Porth, O. 2017 Particle acceleration in relativistic magnetic flux-merging events. J. Plasma Phys. 83 (6), 635830602.CrossRefGoogle Scholar
Madejski, G. M. & Sikora, M. 2016 Gamma-ray observations of active galactic nuclei. Annu. Rev. Astron. Astrophys. 54, 725–760.CrossRefGoogle Scholar
Mizuno, Y., Lyubarsky, Y., Nishikawa, K.-I. & Hardee, P. E. 2009 Three-dimensional relativistic magnetohydrodynamic simulations of current-driven instability. I. Instability of a static column. Astrophys. J. 700, 684–693.CrossRefGoogle Scholar
Nalewajko, K., Begelman, M. C. & Sikora, M. 2014 Constraining the location of gamma-ray flares in luminous blazars. Astrophys. J. 789, 161.CrossRefGoogle Scholar
Nalewajko, K. & Gupta, M. 2017 The sequence of Compton dominance in blazars based on data from WISE and Fermi-LAT. Astron. Astrophys. 606, A44.CrossRefGoogle Scholar
Nalewajko, K., Zrake, J., Yuan, Y., East, W. E. & Blandford, R. D. 2016 Kinetic simulations of the lowest-order unstable mode of relativistic magnetostatic equilibria. Astrophys. J. 826, 115.CrossRefGoogle Scholar
Nishikawa, K.-I., Frederiksen, J. T., Nordlund, Å., Mizuno, Y., Hardee, P. E., Niemiec, J., Gómez, J. L., Pe’er, A., Duţan, I., Sol, H. et al. 2016 Evolution of global relativistic jets: collimations and expansion with kKHI and the Weibel instability. Astrophys. J. 820, 94.CrossRefGoogle Scholar
Philippov, A. A., Spitkovsky, A. & Cerutti, B. 2015 Ab initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of oblique pulsars. Astrophys. J. 801, L19.CrossRefGoogle Scholar
Sikora, M., Stawarz, Ł., Moderski, R., Nalewajko, K. & Madejski, G. M. 2009 Constraining emission models of luminous blazar sources. Astrophys. J. 704, 38–50.CrossRefGoogle Scholar
Sironi, L., Giannios, D. & Petropoulou, M. 2016 Plasmoids in relativistic reconnection, from birth to adulthood: first they grow, then they go. Mon. Not. R. Astron. Soc. 462, 48–74.CrossRefGoogle Scholar
Sironi, L., Petropoulou, M. & Giannios, D. 2015 Relativistic jets shine through shocks or magnetic reconnection? Mon. Not. R. Astron. Soc. 450, 183–191.CrossRefGoogle Scholar
Sironi, L. & Spitkovsky, A. 2014 Relativistic reconnection: an efficient source of non-thermal particles. Astrophys. J. Lett. 783, L21.CrossRefGoogle Scholar
Uzdensky, D. A. & McKinney, J. C. 2011 Magnetic reconnection with radiative cooling. I. Optically thin regime. Phys. Plasmas 18, 042105.CrossRefGoogle Scholar
Wehrle, A. E., Marscher, A. P., Jorstad, S. G., Gurwell, M. A., Joshi, M., MacDonald, N. R., Williamson, K. E., Agudo, I. & Grupe, D. 2012 Multiwavelength variations of 3C 454.3 during the 2010 November to 2011 January Outburst. Astrophys. J. 758, 72.CrossRefGoogle Scholar
Werner, G. R., Philippov, A. A. & Uzdensky, D. A.2018 Particle acceleration in relativistic magnetic reconnection with strong inverse-Compton cooling in pair plasmas. arXiv:1805.01910.CrossRefGoogle Scholar
Werner, G. R., Uzdensky, D. A., Cerutti, B., Nalewajko, K. & Begelman, M. C. 2016 The extent of power-law energy spectra in collisionless relativistic magnetic reconnection in pair plasmas. Astrophys. J. Lett. 816, L8.CrossRefGoogle Scholar
Yuan, Y., Nalewajko, K., Zrake, J., East, W. E. & Blandford, R. D. 2016 Kinetic study of radiation-reaction-limited particle acceleration during the relaxation of unstable force-free equilibria. Astrophys. J. 828, 92.CrossRefGoogle Scholar