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28 papers · 2 filters
The Sun at millimeter wavelengths IV. Magnetohydrodynamic waves in small-scale bright features
Juan Camilo Guevara Gómez, Shahin Jafarzadeh, Sven Wedemeyer +3
We used solar observations of a plage/enhanced network with the Atacama Large Millimeter/sub-millimeter Array (ALMA) in Band 3 and Band 6 together with synthetic continuum maps fro…
Waves in the lower solar atmosphere: the dawn of next-generation solar telescopes
David B. Jess, Shahin Jafarzadeh, Peter H. Keys +3
Waves and oscillations have been observed in the Sun's atmosphere for over half a century. While such phenomena have readily been observed across the entire electromagnetic spectru…
Spicules in IRIS Mg II Observations: Automated Identification
Vicki L. Herde, Phillip C. Chamberlin, Don Schmit +4
We have developed an algorithm to identify solar spicules in the first ever systematic survey of on-disk spicules exclusively using Mg II spectral observations. Using this algorith…
Polymeric jets throw light on the origin and nature of the forest of solar spicules
Sahel Dey, Piyali Chatterjee, Murthy O. V. S. N. +4
Spicules are plasma jets, observed in the dynamic interface region between the visible solar surface and the hot corona. At any given time, it is estimated that about 3 million spi…
Pre-emergence Signatures Of Horizontal Divergent Flows In Solar Active Regions
T. Rees-Crockford, C. J. Nelson, M. Mathioudakis
Solar active regions (ARs) play a fundamental role in driving many of the geo-effective eruptions which propagate into the Solar System. However, we are still unable to consistentl…
Investigating Anomalous Photochemistry in the Inner Wind of IRC+10216 Through Interferometric Observations of HCN
Mark A. Siebert, Marie Van de Sande, Thomas J. Millar +1
In recent years, many questions have arisen regarding the chemistry of photochemical products in the carbon-rich winds of evolved stars. To address them, it is imperative to constr…