181 citations · 4.5k across the 95 of their papers we have counts for
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Spectroscopic Observations of Coronal Rain Formation and Evolution following an X2 Solar Flare
David H. Brooks, Jeffrey W. Reep, Ignacio Ugarte-Urra +2
A significant impediment to solving the coronal heating problem is that we currently only observe active region (AR) loops in their cooling phase. Previous studies showed that the…
Hinode EIS: updated in-flight radiometric calibration
G. Del Zanna, M. Weberg, H. P. Warren
We present an update to the in-flight radiometric calibration of the Hinode EUV Imaging Spectrometer (EIS), revising and extending our previous studies. We analyze full-spectral EI…
First Results for Solar Soft X-ray Irradiance Measurements from the Third Generation Miniature X-Ray Solar Spectrometer
Thomas N. Woods, Bennet Schwab, Robert Sewell +11
Three generations of the Miniature X-ray Solar Spectrometer (MinXSS) have flown on small satellites with the goal "to explore the energy distribution of soft X-ray (SXR) emissions…
On orbit performance of the solar flare trigger for the Hinode EUV Imaging Spectrometer
David H. Brooks, Jeffrey W. Reep, Ignacio Ugarte-Urra +1
We assess the on-orbit performance of the flare event trigger for the Hinode EUV Imaging Spectrometer. Our goal is to understand the time-delay between the occurrence of a flare, a…
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…
Plasma composition measurements in an active region from Solar Orbiter/SPICE and Hinode/EIS
David H. Brooks, Miho Janvier, Deborah Baker +28
A key goal of the Solar Orbiter mission is to connect elemental abundance measurements of the solar wind enveloping the spacecraft with EUV spectroscopic observations of their sola…
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…
A publicly available multi-observatory data set of an enhanced network patch from the Photosphere to Corona
Adam R. Kobelski, Lucas A. Tarr, Sarah A. Jaeggli +3
New instruments sensitive to chromospheric radiation at X-ray, UV, Visible, IR, and sub-mm wavelengths have become available that significantly enhance our ability to understand th…
Detection of stellar-like abundance anomalies in the slow solar wind
David H. Brooks, Deborah Baker, Lidia van Driel-Gesztelyi +2
The elemental composition of the Sun's hot atmosphere, the corona, shows a distinctive pattern that is different than the underlying surface, or photosphere (Pottasch 1963). Elemen…
Geometric Assumptions in Hydrodynamic Modeling of Coronal and Flaring Loops
Jeffrey W. Reep, Ignacio Ugarte-Urra, Harry P. Warren +1
In coronal loop modeling, it is commonly assumed that the loops are semi-circular with a uniform cross-sectional area. However, observed loops are rarely semi-circular, and extrapo…
Constraining Global Coronal Models with Multiple Independent Observables
Samuel T. Badman, David H. Brooks, Nicolas Poirier +13
Global coronal models seek to produce an accurate physical representation of the Sun's atmosphere which can be used, for example, to drive space weather models. Assessing their acc…
Solar Flare Irradiance: Observations and Physical Modeling
Jeffrey W. Reep, David E. Siskind, Harry P. Warren
We examine SDO/EVE data to better understand solar flare irradiance, and how that irradiance may vary for large events. We measure scaling laws relating GOES flare classes to irrad…
Measurements of Coronal Magnetic Field Strengths in Solar Active Region Loops
David H. Brooks, Harry P. Warren, Enrico Landi
The characteristic electron densities, temperatures, and thermal distributions of 1MK active region loops are now fairly well established, but their coronal magnetic field strength…
The Formation and Lifetime of Outflows in a Solar Active Region
David H. Brooks, Louise Harra, Stuart D. Bale +4
Active regions are thought to be one contributor to the slow solar wind. Upflows in EUV coronal spectral lines are routinely osberved at their boundaries, and provide the most dire…
Solar physics in the 2020s: DKIST, parker solar probe, and solar orbiter as a multi-messenger constellation
V. Martinez Pillet, A. Tritschler, L. Harra +20
The National Science Foundation (NSF) Daniel K. Inouye Solar Telescope (DKIST) is about to start operations at the summit of Haleakala (Hawaii). DKIST will join the early science p…
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…
Simulating Solar Flare Irradiance with Multithreaded Models of Flare Arcades
Jeffrey W. Reep, Harry P. Warren, Christopher S. Moore +2
Understanding how energy is released in flares is one of the central problems of solar and stellar astrophysics. Observations of high temperature flare plasma hold many potential c…
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,…
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…
Solar Active Region Heating Diagnostics from High Temperature Emission using the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS)
P. S. Athiray, Amy R. Winebarger, Will T. Barnes +7
The relative amount of high temperature plasma has been found to be a useful diagnostic to determine the frequency of coronal heating on sub-resolution structures. When the loops a…
The Magnetic Properties of Heating Events on High-Temperature Active Region Loops
Ignacio Ugarte-Urra, Nicholas A. Crump, Harry P. Warren +1
Understanding the relationship between the magnetic field and coronal heating is one of the central problems of solar physics. However, studies of the magnetic properties of impuls…
Comprehensive Determination of the Hinode/EIS Roll Angle
Gabriel Pelouze, Frédéric Auchère, Karine Bocchialini +5
We present a new coalignment method for the EUV Imaging Spectrometer (EIS) on board the Hinode spacecraft. In addition to the pointing offset and spacecraft jitter, this method det…