Results 51 to 60 of about 1,105,860 (262)
ALMA and IRIS Observations of the Solar Chromosphere. I. An On-disk Type II Spicule
, 2020 We present observations of the solar chromosphere obtained simultaneously with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Interface Region Imaging Spectrograph.
G. Chintzoglou +9 more
semanticscholar +1 more source
Magnetic reconnection in the low solar chromosphere with a more realistic radiative cooling model [PDF]
, 2018 Magnetic reconnection is the most likely mechanism responsible for the high temperature events that are observed in strongly magnetized locations around the temperature minimum in the low solar chromosphere.
Lei Ni, V. Lukin, N. Murphy, Jun Lin
semanticscholar +1 more source
Chromospheric Bubbles in Solar Flares [PDF]
The Astrophysical Journal Letters, 2020 Abstract We analyze a grid of radiative hydrodynamic simulations of solar flares to study the energy balance and response of the atmosphere to nonthermal electron beam heating. The appearance of chromospheric bubbles is one of the most notable features that we find in the simulations.
A. Reid +3 more
openaire +4 more sources
A First Comparison of Millimeter Continuum and Mg ii Ultraviolet Line Emission from the Solar Chromosphere [PDF]
, 2017 We present joint observations of the Sun by the Atacama Large Millimeter/submillimeter Array (ALMA) and the Interface Region Imaging Spectrograph (IRIS). Both millimeter/submillimeter-λ continuum emission and ultraviolet (UV) line emission originate from
T. Bastian +6 more
semanticscholar +1 more source
Extreme Red-wing Enhancements of UV Lines during the 2022 March 30 X1.3 Solar Flare
The Astrophysical Journal, 2023 Here, we present the study of a compact emission source during an X1.3 flare on 2022 March 30. Within a ∼41 s period (17:34:48 UT to 17:35:29 UT), Interface Region Imaging Spectrograph observations show spectral lines of Mg ii , C ii , and Si iv with ...
Yan Xu +5 more
doaj +1 more source
Chromospheric Prolateness: Solar Cycle Variations [PDF]
Proceedings of the International Astronomical Union, 2006 The solar prolateness (also known as Ovalisation, a french origin name) of the extended dynamical chromosphere is established from measurements performed above 2 Mm heights during the years of solar minimum, using the H$\alpha$, Ca II K and HeII 304 line emissions from both ground-based and space-based observations.
J. Vilinga +5 more
openaire +1 more source
Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere [PDF]
, 2017 Magnetic reconnection in strongly magnetized regions around the temperature minimum region of the low solar atmosphere is studied by employing MHD-based simulations of a partially ionized plasma within a reactive 2.5D multi-fluid model.
Lei Ni, V. Lukin, N. Murphy, Jun Lin
semanticscholar +1 more source
Formation of the Lyman Continuum during Solar Flares
The Astrophysical Journal, 2023 The Lyman continuum (LyC;
Shaun A. McLaughlin +5 more
doaj +1 more source
Magnetoacoustic Heating of the Solar Chromosphere
The Astrophysical Journal, 1991 Long-period acoustic waves generated in the solar convection zone can propagate radially outward through the overlying atmosphere and get resonantly absorbed in the magnetic arches of the low-lying chromospheric canopy. The resulting Poynting and acoustic flux that enters the magnetic canopy in the network regions is demonstrated to be adequate to ...
Joseph M. Davila, S. M. Chitre
openaire +1 more source
Solar Radio Wide‐Band Spectroscopy and Imaging Facilities of the Chinese Meridian Project Phase II
Space Weather, Volume 23, Issue 11, November 2025.Abstract Solar eruptions, including flares and coronal mass ejections, are the most energetic phenomena in the solar system. These explosive events accelerate high‐energy particles and generate electromagnetic radiation from radio to gamma‐ray wavelengths, producing heliospheric disturbances and acting as primary drivers of space weather hazards.
Yihua Yan +19 more
wiley +1 more source