The Contribution Of Microbunching Instability To Solar Flare Emission In The Ghz To Thz Range Of Frequencies

dc.creatorMichael Klopf J.
dc.creatorKaufmann P.
dc.creatorRaulin J.-P.
dc.creatorSzpigel S.
dc.date2014
dc.date2015-06-25T17:56:17Z
dc.date2015-11-26T14:43:13Z
dc.date2015-06-25T17:56:17Z
dc.date2015-11-26T14:43:13Z
dc.date.accessioned2018-03-28T21:51:12Z
dc.date.available2018-03-28T21:51:12Z
dc.identifier
dc.identifierAstrophysical Journal. Institute Of Physics Publishing, v. 791, n. 1, p. - , 2014.
dc.identifier0004637X
dc.identifier10.1088/0004-637X/791/1/31
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84905262850&partnerID=40&md5=a52217c9933b6e2ea021738c66075bd2
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/86998
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/86998
dc.identifier2-s2.0-84905262850
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1251583
dc.descriptionRecent solar flare observations in the sub-terahertz range have provided evidence of a new spectral component with fluxes increasing for larger frequencies, separated from the well-known microwave emission that maximizes in the gigahertz range. Suggested interpretations explain the terahertz spectral component but do not account for the simultaneous microwave component. We present a mechanism for producing the observed "double spectra." Based on coherent enhancement of synchrotron emission at long wavelengths in laboratory accelerators, we consider how similar processes may occur within a solar flare. The instability known as microbunching arises from perturbations that produce electron beam density modulations, giving rise to broadband coherent synchrotron emission at wavelengths comparable to the characteristic size of the microbunch structure. The spectral intensity of this coherent synchrotron radiation (CSR) can far exceed that of the incoherent synchrotron radiation (ISR), which peaks at a higher frequency, thus producing a double-peaked spectrum. Successful CSR simulations are shown to fit actual burst spectral observations, using typical flaring physical parameters and power-law energy distributions for the accelerated electrons. The simulations consider an energy threshold below which microbunching is not possible because of Coulomb repulsion. Only a small fraction of the radiating charges accelerated to energies above the threshold is required to produce the microwave component observed for several events. The ISR/CSR mechanism can occur together with other emission processes producing the microwave component. It may bring an important contribution to microwaves, at least for certain events where physical conditions for the occurrence of the ISR/CSR microbunching mechanism are possible. © 2014. The American Astronomical Society. All rights reserved.
dc.description791
dc.description1
dc.description
dc.description
dc.descriptionAFOSR; U.S. Department of Energy; DE-AC05-06OR23177; DOE; U.S. Department of Energy
dc.descriptionAkabane, K., Nakajima, H., Ohki, K., (1973) SoPh, 33, p. 431
dc.descriptionAntiochos, S.K., The Magnetic Topology of Solar Eruptions (1998) Astrophysical Journal, 502 (2 NUMBER 2), pp. L181-L184. , DOI 10.1086/311507
dc.descriptionBrown, J.C., (1971) SoPh, 18, p. 489
dc.descriptionBrown, J.C., Melrose, D.B., (1977) SoPh, 52, p. 117
dc.descriptionByrd, J.M., Leemans, W.P., Loftsdottir, A., (2002) PhRvL, 89, p. 224801. , 10.1103/PhysRevLett.89.224801
dc.descriptionCarr, G.L., Martin, M.C., McKinney, W.R., Jordan, K., Neil, G.R., Williams, G.P., High-power terahertz radiation from relativistic electrons (2002) Nature, 420 (6912), pp. 153-156. , DOI 10.1038/nature01175
dc.descriptionColson, W.B., (1976) PhLA, 59, p. 187
dc.descriptionCroom, D.L., (1971) SoPh, 19, p. 152
dc.descriptionDeming, D., Kostiuk, T., Glenar, D., (1991) BAAS, 23, p. 1038. , 0002-7537
dc.descriptionDulk, G.A., (1985) ARA&A, 23, p. 169. , 10.1146/annurev.aa.23.090185.001125 0066-4146
dc.descriptionDulk, G.A., Marsh, K.A., (1982) ApJ, 259, p. 350. , 10.1086/160171
dc.descriptionFleishman, G.F., Kontar, E.P., (2010) ApJL, 709, p. 127. , 10.1088/2041-8205/709/2/L127 0004-637X
dc.descriptionFriedman, M., Herndon, M., (1973) PhFl, 16, p. 1982
dc.descriptionGary, G.A., Moore, R.L., Eruption of a multiple-turn helical magnetic flux tube in a large flare: Evidence for external and internal reconnection that fits the breakout model of solar magnetic eruptions (2004) Astrophysical Journal, 611 (1), pp. 545-556. , DOI 10.1086/422132
dc.descriptionGary, D.E., (1985) ApJ, 297, p. 799. , 10.1086/163576
dc.descriptionGinzburg, V.L., Syrovatskii, S.Y., (1965) ARA&A, 3, p. 297. , 10.1146/annurev.aa.03.090165.001501 0066-4146
dc.descriptionHanaoka, Y., (1999) PASJ, 51 (4), p. 483. , 10.1093/pasj/51.4.483 0004-6264
dc.descriptionHirschmugl, C.J., Sagurton, M., Williams, G.P., (1991) PhRvA, 44, p. 1316
dc.descriptionHolman, G.D., Aschwanden, M.J., Aurass, H., (2011) SSRv, 159, p. 107. , 10.1007/s11214-010-9680-9
dc.descriptionHulbert, S.L., Williams, G.P., (1998) Experimental Methods in the Physical Sciences, Vol. 31, Synchrotron Radiation Sources, p. 1
dc.descriptionIngelman, G., Siegbahn, K., (1998) Fysik-Aktuellt, 1, p. 3. , 0283-9148
dc.descriptionJackson, J.D., (1998) Classical Electrodynamics
dc.descriptionKai, K., (1986) SoPh, 104, p. 235
dc.descriptionKaufmann, P., (2011) ApJ, 742 (2), p. 106. , 10.1088/0004-637X/742/2/106 0004-637X 106
dc.descriptionKaufmann, P., Correia, E., Costa, J.E.R., Zodi Vaz, A.M., (1986) A&A, 157, p. 11. , 0004-6361
dc.descriptionKaufmann, P., Correia, E., Costa, J.E.R., (1985) Natur, 313, p. 31. , 10.1038/313380a0
dc.descriptionKaufmann, P., Marcon, R., Abrantes, A., (2014)Kaufmann, P., Raulin, J.-P., Can microbunch instability on solar flare accelerated electron beams account for bright broadband coherent synchrotron microwaves? (2006) Physics of Plasmas, 13 (7), p. 070701. , DOI 10.1063/1.2244526
dc.descriptionKaufmann, P., Raulin, J.-P., Gimenez De Castro, C.G., Levato, H., Gary, D.E., Costa, J.E.R., Marun, A., Correia, E., A new solar burst spectral component emitting only in the terahertz range (2004) Astrophysical Journal, 603 (2), pp. L121-L124. , DOI 10.1086/383186
dc.descriptionKaufmann, P., Trottet, G., Giménez De Castro, C.G., (2009) SoPh, 255, p. 131. , 10.1007/s11207-008-9312-7
dc.descriptionKaufmann, P., White, S.M., Freeland, S.L., (2013) ApJ, 768 (2), p. 134. , 10.1088/0004-637X/768/2/134 0004-637X 134
dc.descriptionKellermann, K.I., Pauliny-Toth, I.I.K., (1969) ApJL, 155, p. 71. , 10.1086/180305 0004-637X
dc.descriptionKim, J.K., (2001) X-Ray Data Booklet
dc.descriptionKlopf, J.M., Greer, A., Gubeli, J., (2007) NucIM, 582, p. 114
dc.descriptionKlopf, M., Kaufmann, P., Raulin, P.J., (2010) BAAS, 42, p. 905. , 0002-7537
dc.descriptionKontar, E., Brown, J.C., Emslie, A.G., (2011) SSRv, 159, p. 301. , 10.1007/s11214-011-9804-x
dc.descriptionKurt, V.G., Yushkov, Yu., B., Kudela, K., Galkin, V.I., (2010) CosRe, 48, p. 72. , 10.1134/S0010952510010053
dc.descriptionLawrence, J.S., Infrared and submillimeter atmospheric characteristics of high Antarctic Plateau sites (2004) Publications of the Astronomical Society of the Pacific, 116 (819), pp. 482-492. , DOI 10.1086/420757
dc.descriptionLin, R.P., Relationship of solar flare accelerated particles to solar energetic particles (SEPs) observed in the interplanetary medium (2005) Advances in Space Research, 35 (10), pp. 1857-1863. , DOI 10.1016/j.asr.2005.02.087, PII S0273117705002231
dc.descriptionLüthi, A., Lüdi, A., Magun, A., (2004) A&A, 420, p. 361. , 10.1051/0004-6361:20035899 0004-6361
dc.descriptionMotz, H., (1951) JAP, 22, p. 527. , 1475-6072
dc.descriptionMotz, H., Walsh, D., (1962) JAP, 33, p. 978. , 1475-6072
dc.descriptionMyagkova, I.N., Kuznetsov, S.N., Yushkov, Yu., B., Kudela, K., (2004) 35th COSPAR Scientific Assembly, 18-25 July, Paris, France, p. 1511
dc.descriptionNodvick, J.S., Saxon, D.S., (1954) PhRv, 96, p. 180
dc.descriptionRamaty, R., (1969) ApJ, 158, p. 753. , 10.1086/150235
dc.descriptionRamaty, R., Lingenfelter, R.E., (1967) JGR, 72, p. 897. , 10.1029/JZ072i003p00879 0148-0227
dc.descriptionRamaty, R., Schwartz, R.A., Enome, S., Nakajima, H., Gamma-Ray and Millimeter-Wave Emissions from the 1991 June X-Class Solar Flares (1994) Astrophysical Journal, 436 (2 NUMBER 1), p. 941. , DOI 10.1086/174969
dc.descriptionRaulin, J.P., Makhmutov, V.S., Kaufmann, P., Pacini, A.A., Luthi, T., Hudson, H.S., Gary, D.E., Analysis of the impulsive phase of a solar flare at submillimeter wavelengths (2004) Solar Physics, 223 (1-2), pp. 181-199. , DOI 10.1007/s11207-004-1300-y
dc.descriptionRoy, R.J., (1979) SoPh, 64, p. 143
dc.descriptionSakai, J.I., Nagasugi, Y., Emission of electromagnetic waves by proton beams in solar plasmas (2007) Astronomy and Astrophysics, 474 (2), pp. L33-L36. , DOI 10.1051/0004-6361:20078471
dc.descriptionSakai, J.I., Nagasugi, Y., Saito, S., Kaufmann, P., Simulating the emission of electromagnetic waves in the terahertz range by relativistic electron beams (2006) Astronomy and Astrophysics, 457 (1), pp. 313-318. , DOI 10.1051/0004-6361:20065368
dc.descriptionSchiff, L.I., (1946) RScI, 17, p. 67
dc.descriptionSchwinger, J., (1949) PhRv, 75, p. 1912
dc.descriptionShimabukuro, F.I., (1970) SoPh, 15, p. 424
dc.descriptionSilva, A.V.R., Share, G.H., Murphy, R.J., (2007) SoPh, 245, p. 311. , 10.1007/s11207-007-9044-0
dc.descriptionSocas-Navarro, H., The three-dimensional structure of a sunspot magnetic field (2005) Astrophysical Journal, 631 (2), pp. L167-L170. , DOI 10.1086/497334
dc.descriptionStupakov, G., Heifets, S., (2002) PhRv, 5, p. 054402
dc.descriptionSturrock, P.A., (1987) SoPh, 113, p. 13
dc.descriptionSuen, J., Fang, M., Lubin, P., (2014) IEEE Trans. THz Sci. Technol., 4, p. 86. , 10.1109/TTHZ.2013.2294018
dc.descriptionTandberg-Hanssen, E., Emslie, G., (1988) The Physics of Solar Flares, p. 105
dc.descriptionTrottet, G., Klein, L.K., Molodij, G., Sémery, A., (2006) 36th COSPAR Scientific Assembly, July 13-23, Beijing, China, Abstract #1788
dc.descriptionTrottet, G., Krucker, S., Lüthi, T., Magun, A., (2008) ApJ, 678 (1), p. 509. , 10.1086/528787 0004-637X 509
dc.descriptionTrottet, G., Raulin, P.J., Giménez De Castro, G., (2011) SoPh, 273, p. 339
dc.descriptionVenturini, M., Warnock, R., (2002) PhRvL, 89, p. 224802
dc.descriptionWhite, S.M., Krucker, S., Shibasaki, K., Yokoyama, T., Shimojo, M., Kundu, M.R., Radio and hard X-ray images of high-energy electrons in an x-class solar flare (2003) Astrophysical Journal, 595 (2), pp. L111-L114. , DOI 10.1086/379274
dc.descriptionWhite, S.M., Kundu, M.R., Bastian, T.S., (1992) ApJ, 384, p. 656. , 10.1086/170907
dc.descriptionWilliams, G.P., (2002) RScI, 73, p. 1461
dc.descriptionWilliams, G.P., (2006) RPPh, 69, p. 301
dc.descriptionWilliams, G.P., Hirschmugl, C.J., Kneedler, E.M., (1989) PhRvL, 62, p. 261
dc.descriptionZirin, H., Tanaka, K., (1973) SoPh, 32, p. 173
dc.languageen
dc.publisherInstitute of Physics Publishing
dc.relationAstrophysical Journal
dc.rightsaberto
dc.sourceScopus
dc.titleThe Contribution Of Microbunching Instability To Solar Flare Emission In The Ghz To Thz Range Of Frequencies
dc.typeArtículos de revistas


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