Abstract
The M flare that arises after magnetic field emersion in a small spot is analyzed. The disturbance, which propagated downwards and generated a source of acoustic waves (sunquake), was simultaneous with an outburst of hard X-radiation. The reasons of such sunquakes are discussed. Rearrangement of the magnetic configuration in the analyzed event is confirmed: field lines and strong currents at low altitudes above the polarity boundary line are transformed into the currents along the system of loops oriented at wide angles to the neutral line. This rearrangement occurred in the proximity of a small region (sigmoid) presumably identified by the location of the primary pulse energy release. In this case, there was no development of a high-energy sigmoid flare with the formation and ejection of large-scale magnetized ropes. Apparently, this was hindered by the nonstationarity of the phenomena at this activity center with a magnetic field of composite topology and multiple flare-generating centers.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Buitrago-Casas, J.C., Martínez Oliveros, C. Lindsey, et al., A statistical correlation of sunquakes based on their seismic and white-light emission, Sol. Phys., 2015, vol. 290, no. 11, pp. 3151–3162.
Canou, A., Amari, T., Bommier, V., et al., Evidence for a pre-eruptive twisted flux rope using the Themis Vector Magnetograph, Astrophys. J., 2009, vol. 693, pp. L27–L30.
Donea, A., Seismic transients from flares in solar cycle 23, Space Sci. Rev., 2011, vol. 158, pp. 451–469.
Donea, A. and Lindsey, C., Seismic emission from the solar flares of 2003 October 28 and 29, Astrophys. J., 2005, vol. 630, pp. 1168–1183.
Fisher, D.J. and Bercik, B.T., Welsch, I et al., Global forces in eruptive solar flares: The Lorentz force acting on the solar atmosphere and the solar interior, Sol. Phys., 2012, vol. 277, pp. 59–76.
Hood, A.W., Archontis, V., and MacTaggart, D., 3D MHD flux emergence experiments: Idealised models and coronal interactions, Sol. Phys., 2012, vol. 278, no. 1, pp. 3–31.
Janvier, G., Aulanier, V., Bommier, B., and Schmieder, P.,Démoulin, and Pariat, E., Electronic currents in flare ribbons: Observations and three-dimensional standard model, Astrophys. J., 2014, vol. 788, id 60.
Judge, P.G., Kleint, L., Donea, A., et al., On the origin of a sunquake during the 2014 March 29 X1 flare, Astrophys. J., 2014, vol. 796, id 85.
Kosovichev, V.V. and Zharkova, V.V., X-ray flare sparks quake inside Sun, Nature, 1998, vol. 393, pp. 317–318.
Kostyuk, N.D. and Pikel’ner, S.B., Gas dynamics of a flare region heated by the flux of accelerated electrons, Astron. Zh., 1974, vol. 51, pp. 1002–1016.
Lee, J.-Y., Barnes, G.K.D., Leka, K.D., et al., The role of magnetic topology in the heating of active region coronal loops, Astrophys. J., 2010, vol. 723, no. 2, pp. 1493–1506.
Lin, R.P., Dennis, B.R., Hurford, G.J., et al., The Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI), Sol. Phys., 2002, vol. 210, nos. 1–2, pp. 3–32.
Livshits, M.A., Grigoryeva, I.Yu., Mysh’yakov, I.I., and Rudenko, G.V., Evidence for a relationship between emerging magnetic fields, electric currents, and solar flares observed on May 10, 2012, Astron. Rep., 2016, vol. 60, no. 10, pp. 939–948.
Mousset, S., Vilmer, N., and Bommier, V., Hard X-ray emitting energetic electrons and photospheric electric currents, Astron. Astrophys., 2015, vol. 580, A106.
Romanov, V.A. and Tsap, T.T., Magnetic fields and flare activity, Sov. Astron., 1990, vol. 34, no. 6, pp. 656–660.
Russell, A.J.B., Mooney, M.K., Leake, J.E., and Hudson, H.S., Sunquake generation by coronal magnetic restructuring, Astrophys. J., 2016, vol. 831, id 42.
Schou, J., Scherrer, P.H., Bush, R.I., et al., Design and ground calibration of the Helioseismic and Magnetic Imager (HMI) instrument on the Solar Dynamics Observatory (SDO), Sol. Phys., 2012, vol. 275, pp. 229–259.
Sharykin, I.N. and Kosovichev, A.G., Dynamics of electric currents, magnetic field topology, and helioseismic response of a solar flare, Astrophys. J., 2015, vol. 808, no. 1, id 72.
Sharykin, I.N., Kosovichev, A.G., and Zhimovets, I.V., Energy release and initiation of a sunquake in a C-class flare, Astrophys. J., vol. 807, no. 1, id 102.
Sadykov, V.M., Kosovichev, A.G., Sharykin, I.N., Zhimovets, I.V., and Dominguez, S.V., Relationship between chromospheric evaporation and magnetic field topology in an M-class solar flare, Astrophys. J., vol. 828, no. 1, id 4.
Yamaoka, K., Endo, A., Enoto, T., et al., Design and inorbit performance of the Suzaku wide-band all-sky monitor, Publ. Astron. Soc. J., 2009, vol. 61, pp. S35–S53.
Zharkov, S., Geometric properties of acoustic waves generated by a point source in the solar-like interior: Effects of acoustic cutoff frequency, Mon. Not. R. Astron. Soc., 2013, vol. 431, no. 4, pp. 3414–3428.
Zharkov, S., Green, L., Matthews, S.A., and Zharkova, V., Properties of the 15 February 2011 flare seismic source, 2013, Sol. Phys., vol. 284, no. 2, pp. 315–327.
Zharkova, V.V. and Zharkov, S.I., On the origin of three seismic sources in the proton-rich flare of 2003 October 28, Astrophys. J., 2007, vol. 664, pp. 573–585.
Zharkova, V. and Zharkov, S., On the generation of hydrodynamic shocks by mixed beams and occurrence of sunquakes in flares, Sol. Phys., 2015, vol. 290, pp. 3163–3188.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Grigor’eva, I.Y., Livshits, M.A. The Atypical Sunquake of May 10, 2012, and Specifics of Nonstationary Processes in the Active Region with a Magnetic Field of Composite Topology. Geomagn. Aeron. 57, 1038–1044 (2017). https://doi.org/10.1134/S0016793217080114
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793217080114