AN INTERFACE REGION IMAGING SPECTROGRAPH FIRST VIEW ON SOLAR SPICULES

An eclipse experiment to study the solar chromosphere and spicules

An experiment is proposed to measure a critical part of the chromospheric flash spectrum during the eclipse which will occur November 13, 2012. The idea is to obtain rapid (30 Hz), high signal-to-noise spectrographic data at at least one chromospheric line, the calcium H line being the most desirable, at a spectral resolution of 15,000 or higher. A small telescope with a small exit pupil can be...

Seismology of solar spicules based on Hinode/SOT observations

Solar spicules and macrospicules observed by SUMER

Motivated by recent observations of spicules and macrospicules in the far-ultraviolet (FUV) wavelength range with the Solar Ultraviolet Measurements of Emitted Radiation spectrograph (SUMER) on the Solar and Heliospheric Observatory (SOHO), a generation mechanism for spicules and macrospicules is outlined which deviates significantly from most of the previous concepts. The important aspect is t...

Magneto-acoustic Wave Oscillations in Solar Spicules

Some observations suggest that solar spicules show small amplitude and high frequency oscillations of magneto-acoustic waves, which arise from photospheric granular forcing. We apply the method of MHD seismology to determine the period of kink waves. For this purposes, the oscillations of a magnetic cylinder embedded in a field-free environment is investigated. Finally, diagnostic diagrams disp...

The Magnetic Field of Solar Spicules

Determining the magnetic field of solar spicules is vital for developing adequate models of these plasma jets, which are thought to play a key role in the thermal, dynamic, and magnetic structure of the chromosphere. Here we report on magnetic spicule properties in a very quiet region of the off-limb solar atmosphere, as inferred from new spectropolarimetric observations in the He I 10830 Å tri...