Solar Physics

Suppression of the polar tongue of ionization during the 21 August 2017 solar eclipse

Polar maps of differential TEC
Saturday, August 4, 2018

It has long been recognized that during solar eclipses, the ionosphere-thermosphere system changes greatly within the eclipse shadow, due to the rapid reduction of solar irradiation.

MHD simulation of prominence eruption

A 3D MHD simulation of the eruption of a prominence-carrying coronal flux rope
Monday, August 6, 2018

Yuhong Fan and others carry out magnetohydrodynamic (MHD) simulations of the quasi-static evolution and eruption of a twisted coronal flux rope under a coronal streamer built up by an imposed flux emergence at the lower boundary.

Experimental testing of scattering polarization models

Broadband fractional polarization Q/I, U/I, and V/I
Wednesday, August 1, 2018

We realized a laboratory experiment to study the polarization of the Na I doublet at 589:3 nm, in the presence of a magnetic eld. The purpose of the experiment is to test the theory of scattering polarization for illumination conditions typical of astrophysical plasmas.

Measured performance of shadow-cast coated gratings for spectro-polarimetric applications

Measured vector efficiency of an echelle grating
Wednesday, August 1, 2018

Roberto Casini et al report on the measurements of the vector efficiency of a reflective blazed diffraction grating, which was specially coated in order to reduce the level of polarization in the diffracted light.

Solar physics from unconventional viewpoints

An overview of interesting vantage points, highlighting previous extra-Sun-Earth-line (extra-SEL) missions
Thursday, July 26, 2018

We explore new opportunities for solar physics that could be realized by future missions providing sustained observations from vantage points away from the Sun-Earth line.

Delores J. Knipp Designated an AMS Fellow

Dr. Delores J. Knipp

As part of their yearly awards and honors program, the American Meteorological Society (AMS) has recognized Dr. Delores J. Knipp as a Fellow.

Dr. Tanausú del Pino Alemán awarded 2018 ESPD Prize

Dr. Tanausú del Pino Alemán

Dr. Tanausú del Pino Alemán (Instituto de Astrofísica de Canarias, Tenerife, Spain) has been awarded the 2018 ESPD Early Career Researcher Prize for his ground breaking contributions in the field of theoretical solar spectropolarimetry.

Discovery of New Coronal Lines at 2.843 & 2.853 Microns

Summary of AIR-Spec observations during totality
Tuesday, February 20, 2018

Jenna Samra and Philip Judge identify two new emission features observed during the 21st August 2017 total solar eclipse by a novel spectrometer, AIR-Spec, flown at 14.3 km altitude aboard the NCAR Gulfstream V aircraft.

Role of Interaction Between Magnetic Rossby Waves and Tachocline Differential Rotation in Producing Solar Seasons

Synoptic maps
Wednesday, January 24, 2018

Mausumi Dikpati presents a nonlinear magnetohydrodynamic shallow-water model for the solar tachocline (MHD-SWT) that generates quasi-periodic tachocline nonlinear oscillations (TNOs) that can be identified with the recently discovered solar 'seasons'.

Joan Burkepile Mentors Middle-School Girls for Over a Decade

Joan Burkepile leading STEM hands-on workshop

For over a decade, Joan Burkepile has participated in the STEM conference for middle school girls called “Expanding Your Horizons,” at CU Boulder. These one-day hands-on workshops are led by women professionals and are designed to be fun and exploratory.

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