160 citations · 1.1k across the 28 of their papers we have counts for
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Evidence for the Operation of the Hanle and Magneto-Optical Effects in the Scattering Polarization Signals Observed by CLASP2 Across the Mg II h and k Lines
Ryohko Ishikawa, Javier Trujillo Bueno, Ernest Alsina Ballester +8
Radiative transfer investigations of the solar Mg II h and k resonance lines around 280~nm showed that, while their circular polarization (Stokes V) signals arise from the Zeeman e…
Tomography of a solar plage with the Tenerife Inversion Code
Hao Li, T. del Pino Alemán, J. Trujillo Bueno +8
We apply the Tenerife Inversion Code (TIC) to the plage spectropolarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter (CLASP2). These unprecedented data c…
The First Flight of the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS)
Sabrina L. Savage, Amy R. Winebarger, Ken Kobayashi +34
The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) sounding rocket experiment launched on July 30, 2021 from the White Sands Missile Range in New Mexico. MaGIXS is a unique…
Quiet Sun Center to Limb Variation of the Linear Polarization Observed by CLASP2 Across the Mg II h & k Lines
L. A. Rachmeler, J. Trujillo Bueno, D. E. McKenzie +25
The CLASP2 (Chromospheric LAyer SpectroPolarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the Mg II h & k spectral…
Parallel plasma loops and the energization of the solar corona
Hardi Peter, Lakshmi Pradeep Chitta, Feng Chen +15
The outer atmosphere of the Sun is composed of plasma heated to temperatures well in excess of the visible surface. We investigate short cool and warm (<1 MK) loops seen in the cor…
Thermodynamic Evolution of Solar Flare Supra-arcade Downflows
Z. F. Li, X. Cheng, M. D. Ding +4
Solar flares are rapid energy release phenomena that appear as bright ribbons in the chromosphere and high-temperature loops in the corona, respectively. Supra-arcade Downflows (SA…
Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona
Ryohko Ishikawa, Javier Trujillo Bueno, Tanausu del Pino Aleman +25
Routine ultraviolet imaging of the Sun's upper atmosphere shows the spectacular manifestation of solar activity; yet we remain blind to its main driver, the magnetic field. Here we…
Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
Mark P. Rast, Nazaret Bello González, Luis Bellot Rubio +84
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of…
The drivers of active region outflows into the slow solar wind
David H. Brooks, Amy R. Winebarger, Sabrina Savage +13
Plasma outflows from the edges of active regions have been suggested as a possible source of the slow solar wind. Spectroscopic measurements show that these outflows have an enhanc…
Is the High-Resolution Coronal Imager Resolving Coronal Strands? Results from AR 12712
Thomas Williams, Robert W. Walsh, Amy R. Winebarger +14
Following the success of the first mission, the High-Resolution Coronal Imager (Hi-C) was launched for a third time (Hi-C 2.1) on 29th May 2018 from the White Sands Missile Range,…
Measuring and modeling the rate of separator reconnection between an emerging and existing active region
Marika I. McCarthy, Dana W. Longcope, Anna Malanushenko +1
Magnetic reconnection occurs when new flux emerges into the corona and becomes incorporated into the existing coronal field. A new active region (AR) emerging in the vicinity of an…
Hi-C 2.1 Observations of Jetlet-like Events at Edges of Solar Magnetic Network Lane
Navdeep K. Panesar, Alphonse C. Sterling, Ronald L. Moore +15
We present high-resolution, high-cadence observations of six, fine-scale, on-disk jet-like events observed by the High-resolution Coronal Imager 2.1 (Hi-C 2.1) during its sounding-…
Fine-scale explosive energy release at sites of prospective magnetic flux cancellation in the core of the solar active region observed by Hi-C 2.1, IRIS and SDO
Sanjiv K. Tiwari, Navdeep K. Panesar, Ronald L. Moore +14
The second Hi-C flight (Hi-C2.1) provided unprecedentedly-high spatial and temporal resolution (250km, 4.4s) coronal EUV images of Fe IX/X emission at 172 Å, of AR 12712 on 2…
The High-Resolution Coronal Imager, Flight 2.1
Laurel A. Rachmeler, Amy R. Winebarger, Sabrina L. Savage +49
The third flight of the High-Resolution Coronal Imager (Hi-C 2.1) occurred on May 29, 2018, the Sounding Rocket was launched from White Sands Missile Range in New Mexico. The instr…
An exploration of heating mechanisms in a supra-arcade plasma sheet formed after a coronal mass ejection
Katharine K. Reeves, Michael S. Freed, David E. McKenzie +1
We perform a detailed analysis of the thermal structure of the region above the post-eruption arcade for a flare that occurred on 2011 October 22. During this event, a sheet of hot…
Forward Modeling Transient Brightenings and Microflares around an Active Region Observed with Hi-C
Adam R. Kobelski, David E. McKenzie
Small scale flare-like brightenings around active regions are among the smallest and most fundamental of energetic transient events in the corona, providing a testbed for models of…
Modeling Active Region Transient Brightenings Observed with XRT as Multi-Stranded Loops
Adam R Kobelski, David E McKenzie, Martin Donachie
Strong evidence exists that coronal loops as observed in EUV and soft X-rays may not be monolithic isotropic structures, but can often be more accurately modeled as bundles of inde…
Quiescent Reconnection Rate Between Emerging Active Regions and Preexisting Field, with Associated Heating: NOAA AR11112
Lucas A. Tarr, Dana W. Longcope, David E. McKenzie +1
When magnetic flux emerges from beneath the photosphere it displaces the preexisting field in the corona, and a current sheet generally forms at the boundary between the old and ne…
Peristaltic Pumping near Post-CME Supra-Arcade Current Sheets
Roger B. Scott, Dana W. Longcope, David E. McKenzie
Measurements of temperature and density near supra-arcade current sheets suggest that plasma on unreconnected field lines may experience some degree of "pre-heating" and "pre-densi…
A Multi-Wavelength Statistical Study of Supra-Arcade Downflows
Sabrina Savage, David McKenzie
Sunward-flowing voids above post-coronal mass ejection flare arcades, also known as supra-arcade downflows (SADs), have characteristics consistent with post-reconnection magnetic f…
Re-interpretation of Supra-Arcade Downflows in Solar Flares
Sabrina L. Savage, David E. McKenzie, Katharine K. Reeves
Following the eruption of a filament from a flaring active region, sunward-flowing voids are often seen above developing post-eruption arcades. First discovered using the soft X-ra…
Low-Altitude Reconnection Inflow-Outflow Observations during a 2010 November 3 Solar Eruption
S. L. Savage, G. Holman, K. K. Reeves +3
For a solar flare occurring on 2010 November 3, we present observations using several SDO/AIA extreme-ultraviolet (EUV) passbands of an erupting flux rope followed by inflows sweep…
EUV Analysis of a Quasi-Static Coronal Loop Structure
Jason Scott, P. C. H. Martens, David McKenzie
Decaying active region 10942 is investigated from 4:00-16:00 UT on February 24, 2007 using a suite of EUV observing instruments. Results from Hinode/EIS, STEREO and TRACE show that…
Distribution Functions of Sizes and Fluxes Determined from Supra-Arcade Downflows
David E. McKenzie, Sabrina L. Savage
The frequency distributions of sizes and fluxes of supra-arcade downflows (SADs) provide information about the process of their creation. For example, a fractal creation process ma…