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Discovery of the Sub-second Linearly Polarized Spikes of Synchrotron Origin in the UV Ceti Giant Optical Flare

  • G. Beskin (a1) (a2), S. Karpov (a1) (a2), V. Plokhotnichenko (a1), A. Stepanov (a3) and Yu. Tsap (a3)...
Abstract
Abstract

During our optical monitoring of UV Ceti, iconic late-type flaring star, with high temporal resolution using the Russian 6-m telescope in 2008, we detected a giant flare with the amplitude of about 3 magnitudes in U band. Near flare maximum, more than a dozen of spike bursts have been discovered with triangular shapes and durations from 0.6 to 1.2 s and maximal luminosities in the range (1.5–8) × 1027 erg s−1. For the half of these events, the linear polarization exceeds 35% with significance better than 5σ. We argue that these events are synchrotron emission of electron streams with the energies of several hundred MeV moving in the magnetic field of about 1.4 kG. Emission from such ultra-relativistic (with energies far exceeding 10 MeV) particles is being routinely observed in solar flares, but has never been detected from UV Ceti-type stars. This is the first ever detection of linearly polarized optical light from the UV Ceti-type stars which indicates that at least some fraction of the flaring events on these stars is powered by a non-thermal synchrotron emission mechanism.

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4 Email: beskin@sao.ru
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J. R. P. Angel 1969, ApJ, 158, 219 10.1086/150185 1969ApJ...158..219A

M. J. Aschwanden , R. A. Schwartz , & D. M. Alt 1995, ApJ, 447, 923 10.1086/175930 1995ApJ...447..923A

A. O. Benz , & M. Güdel 2010, ARA&A, 48, 241 10.1146/annurev-astro-082708-101757 2010ARA&A..48..241B

P. A. Bespalov , V. V. Zaitsev , & A. V. Stepanov 1991, ApJ, 374, 369 10.1086/170127 1991ApJ...374..369B

A. Caspi , & R. P. Lin 2010, ApJ, 725, L161 10.1088/2041-8205/725/2/L161 2010ApJ...725L.161C

P. A. Cassak , D. J. Mullan , & M. A. Shay 2008, ApJ, 676, L69 10.1086/587055 2008ApJ...676L..69C

H. Che , J. F. Drake , & M. Swisdak 2011, Natur, 474, 184 10.1038/nature10091 2011Natur.474..184C

J. X. Cheng , J. Qiu , M. D. Ding , & H. Wang 2012, A&A, 547, A73 10.1051/0004-6361/201118608 2012A&A...547A..73C

I. J. D. Craig , & Y. E. Litvinenko 2002, ApJ, 570, 387 10.1086/339578 2002ApJ...570..387C

S. Dalla , & P. K. Browning 2005, A&A, 436, 1103 10.1051/0004-6361:20042589 2005A&A...436.1103D

V. Debur , T. Arkhipova , G. Beskin , M. Pakhomov , Plokhotnichenko V., M. Smirnova , & A. Solin 2003, NIMPA, 513, 127 10.1016/j.nima.2003.08.016 2003NIMPA.513..127D

J. F. Drake , M. Swisdak , H. Che , & M. A. Shay 2006, Natur, 443, 553 10.1038/nature05116 2006Natur.443..553D

G. A. Dulk 1985, ARA&A, 23, 169 10.1146/annurev.aa.23.090185.001125 1985ARA&A..23..169D

E. L. E. Eason , M. S. Giampapa , R. R. Radick , S. P. Worden , & E. K. Hege 1992, AJ, 104, 1161 10.1086/116305 1992AJ....104.1161E

A. G. Emslie , H. L. Bradsher , & M. L. McConnell 2008, ApJ, 674, 570 10.1086/524983 2008ApJ...674..570E

M. Gillon , et al. 2014, A&A, 563, A21 10.1051/0004-6361/201322362 2014A&A...563A..21G

V. L. Ginzburg , & S. I. Syrovatskii 1965, ARA&A, 3, 297 10.1146/annurev.aa.03.090165.001501 1965ARA&A...3..297G

M. Gordovskyy , P. K. Browning , & G. E. Vekstein 2010, A&A, 519, A21 10.1051/0004-6361/200913569 2010A&A...519A..21G

M. Güdel 2002, ARA&A, 40, 217 10.1146/annurev.astro.40.060401.093806 2002ARA&A..40..217G

M. Güdel , A. O. Benz , J. H. M. M. Schmitt , & S. L. Skinner 1996, ApJ, 471, 1002 10.1086/178027 1996ApJ...471.1002G

M. Güdel , & Y. Nazé 2009, A&ARv, 17, 309 10.1007/s00159-009-0022-4 2009A&ARv..17..309G

G. D. Holman , L. Sui , R. A. Schwartz , & A. G. Emslie 2003, ApJ, 595, L97 10.1086/378488 2003ApJ...595L..97H

J. T. Karpen , et al. 1977, ApJ, 216, 479 10.1086/155489 1977ApJ...216..479K

J. F. Kasting , D. P. Whitmire , & R. T. Reynolds 1993, Icar, 101, 108 10.1006/icar.1993.1010 1993Icar..101..108K

A. L. Kiplinger , B. R. Dennis , K. J. Frost , L. E. Orwig , & Emslie A. G. 1983, ApJ, 265, L99 10.1086/183966 1983ApJ...265L..99K

J. A. Klimchuk 2015, PTRSL, 373, 20140256 10.1098/rsta.2014.0256 2015RSPTA.37340256K

H. Krawczynski 2012, ApJ, 744, 30 10.1088/0004-637X/744/1/30 2012ApJ...744...30K

Y. E. Litvinenko 2006, A&A, 452, 1069 10.1051/0004-6361:20054324 2006A&A...452.1069L

López M. C. Fuentes , P. Démoulin , & J. A. Klimchuk 2008, ApJ, 673, 586 10.1086/523928 2008ApJ...673..586L

M. Massi , J. Forbrich , K. M. Menten , G. Torricelli-Ciamponi , J. Neidhöfer , S. Leurini , & F. Bertoldi 2006, A&A, 453, 959 10.1051/0004-6361:20053535 2006A&A...453..959M

T. Minoshima , & T. Yokoyama 2008, ApJ, 686, 701 10.1086/591268 2008ApJ...686..701M

D. J. Mullan , M. Mathioudakis , D. S. Bloomfield , & D. J. Christian 2006, ApJS, 164, 173 10.1086/502629 2006ApJS..164..173M

R. A. Osten , & T. S. Bastian 2006, ApJ, 637, 1016 10.1086/498410 2006ApJ...637.1016O

R. A. Osten , et al. 2010, ApJ, 721, 785 10.1088/0004-637X/721/1/785 2010ApJ...721..785O

R. D. Robinson , K. G. Carpenter , J. W. Percival , & J. A. Bookbinder 1995, ApJ, 451, 795 10.1086/176266 1995ApJ...451..795R

D. M. Salter , Á. Kóspál , K. V. Getman , Hogerheijde M. R., T. A. van Kempen , J. M. Carpenter , G. A. Blake , & Wilner D. 2010, A&A, 521, A32 10.1051/0004-6361/201015197 2010A&A...521A..32S

J. H. M. M. Schmitt , G. Kanbach , A. Rau , & H. Steinle 2016, A&A, 589, A48 10.1051/0004-6361/201628199 2016A&A...589A..48S

K. Shibata , & T. Yokoyama 2002, ApJ, 577, 422 10.1086/342141 2002ApJ...577..422S

W. A. Shurkliff 1962, Polarized Light (Cambridge, MA: Harvard University Press)

K. Smith , M. Güdel , & M. Audard 2005, A&A, 436, 241 10.1051/0004-6361:20042054 2005A&A...436..241S

A. V. Stepanov , T. Yokoyama , K. Shibasaki , & V. F. Melnikov 2007, A&A, 465, 613 10.1051/0004-6361:20066573 2007A&A...465..613S

L. Sui , G. D. Holman , & B. R. Dennis 2007, ApJ, 670, 862 10.1086/522198 2007ApJ...670..862S

V. Y. Trakhtengerts , & M. J. Rycroft 2008, Whistler and Alfvén Mode Cyclotron Masers in Space (Cambridge: Cambridge University Press)

K. C. Westfold 1959, ApJ, 130, 241 10.1086/146713 1959ApJ...130..241W

H. Yan , A. Lazarian , & V. Petrosian 2008, ApJ, 684, 1461 10.1086/589962 2008ApJ...684.1461Y

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