منابع مشابه
Small-scale Magnetic Reconnection in the Quiet Sun
Recent observations indicate that small-scale magnetic re-connection ubiquitously occurs in the quiet Sun as well as in active regions. Particularly interesting is the latest nding of close associations among (1) magnetic ux cancellation seen from photospheric magne-tograms, (2) chromospheric uppow events seen in the H line and (3) transition region explosive events seen in UV lines. I present ...
متن کاملTurbulent magnetic fields in the quiet Sun: implications of Hinode observations and small-scale dynamo simulations
Using turbulent MHD simulations (magnetic Reynolds numbers up to≈ 8000) and Hinode observations, we study effects of turbulence on measuring the solar magnetic field outside active regions. Firstly, from synthetic Stokes V profiles for the FeI lines at 6301 and 6302 Å, we show that a peaked probability distribution function (PDF) for observationally-derived field estimates is consistent with a ...
متن کاملObservational Evidence for Small-Scale Mixture of Weak and Strong Fields in the Quiet Sun
Three different maps of the quiet Sun, observed with the Advanced Stokes Polarimeter (ASP) and the Diffraction-Limited Stokes Polarimeter (DLSP), show evidence of strong (≃1700 G) and weak (<500 G) fields coexisting within the resolution element both at network and internetwork locations. The angular resolution of the observations is of 1(ASP) and 0.6 (DLSP), respectively. Even at the higher DL...
متن کاملSmall - Scale Eruptive Filaments on the Quiet
We conducted a study of a little known class of eruptive events on the quiet sun. 61 small-scale eruptive filamentary structures were identified in a systematic survey of 32 days of Ha time-lapse films of the quiet sun acquired at Big Bear Solar Observatory. When fully developed, these structures have an average length of 15 arc seconds before eruption. They appear to be the small-scale analog ...
متن کاملQuiet Sun coronal heating: statistical model
Recent observations of Krucker & Benz (1998) give strong support to Parker’s hypothesis (1988) that small scale dissipative events make the main contribution to quiet Sun coronal heating. They also showed that these small scale events are associated not only with the magnetic network, but also with the cell interiors (Benz & Krucker, 1998). Taking into account in addition the results of the ana...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2020
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/202038951