Sarah A. Jaeggli
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View article: High-Resolution Transmission Spectroscopy of Venus: A Proxy for Atmospheric Characterization of Earth-Sized Exoplanets
High-Resolution Transmission Spectroscopy of Venus: A Proxy for Atmospheric Characterization of Earth-Sized Exoplanets Open
The great diversity of detected exoplanets offers a wealth of opportunities for atmospheric characterization studies. Transmission spectroscopy has proven effective in probing the chemical composition and dynamics of hot gas giants, and is…
View article: What Can DKIST/DL-NIRSP Tell Us about Quiet-Sun Magnetism?
What Can DKIST/DL-NIRSP Tell Us about Quiet-Sun Magnetism? Open
Quiet-Sun regions cover most of the Sun's surface; their magnetic fields contribute significantly to solar chromospheric and coronal heating. However, characterizing the magnetic fields of the quiet Sun is challenging due to their weak pol…
View article: Transmission Spectroscopy Along the Transit of Venus: A Proxy for Exoplanets Atmospheric Characterization
Transmission Spectroscopy Along the Transit of Venus: A Proxy for Exoplanets Atmospheric Characterization Open
We present an analysis of high-resolution, near-infrared (NIR) spectra relative to the solar transit of Venus of 5–6 June 2012, as observed with the Facility Infrared Spectropolarimeter (FIRS) at the Dunn Solar Telescope in New Mexico. The…
View article: What Can DKIST/DL-NIRSP Tell Us About Quiet-Sun Magnetism?
What Can DKIST/DL-NIRSP Tell Us About Quiet-Sun Magnetism? Open
Quiet-Sun regions cover most of the Sun's surface; its magnetic fields contribute significantly to the solar chromospheric and coronal heating. However, characterizing the magnetic fields of the quiet Sun is challenging due to their weak p…
View article: Spectropolarimetric Inversion in Four Dimensions with Deep Learning (SPIn4D). I. Overview, Magnetohydrodynamic Modeling, and Stokes Profile Synthesis
Spectropolarimetric Inversion in Four Dimensions with Deep Learning (SPIn4D). I. Overview, Magnetohydrodynamic Modeling, and Stokes Profile Synthesis Open
The National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST) will provide high-resolution, multiline spectropolarimetric observations that are poised to revolutionize our understanding of the Sun. Given the massive data volum…
View article: Molecular Hydrogen Line Identifications in Solar Flares Observed by IRIS: Lower Atmospheric Structure from Radiometric Analysis
Molecular Hydrogen Line Identifications in Solar Flares Observed by IRIS: Lower Atmospheric Structure from Radiometric Analysis Open
A rich spectrum of molecular hydrogen (H 2 ) emission lines is seen in sensitive observations from the far-ultraviolet (FUV) channels of the Interface Region Imaging Spectrograph (IRIS) during flare activity in solar active region NOAA Act…
View article: Magnetic diffusion in solar atmosphere produces measurable electric fields
Magnetic diffusion in solar atmosphere produces measurable electric fields Open
View article: Molecular Hydrogen Line Identifications in Solar Flares Observed by IRIS: Lower Atmospheric Structure from Radiometric Analysis
Molecular Hydrogen Line Identifications in Solar Flares Observed by IRIS: Lower Atmospheric Structure from Radiometric Analysis Open
A rich spectrum of molecular hydrogen (H$_2$) emission lines is seen in sensitive observations from the far ultraviolet (FUV) channels of the Interface Region Imaging Spectrograph (IRIS) during flare activity in solar active region NOAA 11…
View article: Spectropolarimetric Inversion in Four Dimensions with Deep Learning (SPIn4D): I. Overview, Magnetohydrodynamic Modeling, and Stokes Profile Synthesis
Spectropolarimetric Inversion in Four Dimensions with Deep Learning (SPIn4D): I. Overview, Magnetohydrodynamic Modeling, and Stokes Profile Synthesis Open
The National Science Foundation's Daniel K. Inouye Solar Telescope (DKIST) will provide high-resolution, multi-line spectropolarimetric observations that are poised to revolutionize our understanding of the Sun. Given the massive data volu…
View article: Transmission Spectroscopy Along the Transit of Venus: A Proxy for Exoplanets Atmospheric Characterization
Transmission Spectroscopy Along the Transit of Venus: A Proxy for Exoplanets Atmospheric Characterization Open
We present an analysis of high-resolution, near-infrared (NIR) spectra relative to the solar transit of Venus of 5-6 June 2012, as observed with the Facility Infrared Spectropolarimeter (FIRS) at the Dunn Solar Telescope in New Mexico. The…
View article: Large Photospheric Doppler Shift in Solar Active Region 12673. I. Field-aligned Flows
Large Photospheric Doppler Shift in Solar Active Region 12673. I. Field-aligned Flows Open
Delta ( δ ) sunspots sometimes host fast photospheric flows along the central magnetic polarity inversion line (PIL). Here we study the strong Doppler shift signature in the central penumbral light bridge of solar active region NOAA 12673.…
View article: Resolving 3D Coronal Loop Physics with Spectropolarimetry and Off-limb Solar Adaptive Optics
Resolving 3D Coronal Loop Physics with Spectropolarimetry and Off-limb Solar Adaptive Optics Open
View article: Large Photospheric Doppler Shift in Solar Active Region 12673: I. Field-Aligned Flows
Large Photospheric Doppler Shift in Solar Active Region 12673: I. Field-Aligned Flows Open
Delta ($δ$) sunspots sometimes host fast photospheric flows along the central magnetic polarity inversion line (PIL). Here we study the strong Doppler shift signature in the central penumbral light bridge of solar active region NOAA 12673.…
View article: Spatio-temporal comparisons of the hydrogen-alpha line width and ALMA 3 mm brightness temperature in the weak solar network
Spatio-temporal comparisons of the hydrogen-alpha line width and ALMA 3 mm brightness temperature in the weak solar network Open
Comparisons between the Atacama Large Millimeter/sub-millimeter Array (ALMA) 3 mm emission and a range of optical and UV solar observations have found the strongest correspondence between the width of the hydrogen alpha line at 656.3 nm an…
View article: Spatio-Temporal Comparisons of the Hydrogen-Alpha Line Width and ALMA 3 mm Brightness Temperature in the Weak Solar Network
Spatio-Temporal Comparisons of the Hydrogen-Alpha Line Width and ALMA 3 mm Brightness Temperature in the Weak Solar Network Open
The strongest known correspondence between ALMA 3mm emission and other solar observations is between the H-alpha line width and 3 mm brightness temperature, while the typical 3-5min p-mode oscillations found in many chromospheric diagnosti…
View article: Systems Approach to Polarization Calibration for the Daniel K. Inouye Solar Telescope (DKIST)
Systems Approach to Polarization Calibration for the Daniel K. Inouye Solar Telescope (DKIST) Open
The Daniel K. Inouye Solar Telescope (DKIST) advances studies of solar magnetism through high-precision and accuracy in polarimetry at frontier spatial and temporal scales. A system model for polarization response in azimuth and altitude h…
View article: The Diffraction-Limited Near-Infrared Spectropolarimeter (DL-NIRSP) of the Daniel K. Inouye Solar Telescope (DKIST)
The Diffraction-Limited Near-Infrared Spectropolarimeter (DL-NIRSP) of the Daniel K. Inouye Solar Telescope (DKIST) Open
The Diffraction-Limited Near-Infrared Spectropolarimeter (DL-NIRSP) is one of the first-light instruments for the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST). DL-NIRSP is an integral-field, dual-beam spectropolar…
View article: A Publicly Available Multiobservatory Data Set of an Enhanced Network Patch from the Photosphere to the Corona
A Publicly Available Multiobservatory Data Set of an Enhanced Network Patch from the Photosphere to the Corona Open
New instruments sensitive to chromospheric radiation at X-ray, UV, visible, IR, and submillimeter wavelengths have become available that significantly enhance our ability to understand the bidirectional flow of energy through the chromosph…
View article: Thomson Scattering above Solar Active Regions and an Ad Hoc Polarization Correction Method for the Emissive Corona
Thomson Scattering above Solar Active Regions and an Ad Hoc Polarization Correction Method for the Emissive Corona Open
Thomson-scattered photospheric light is the dominant constituent of the lower solar corona’s spectral continuum viewed off-limb at optical wavelengths. Known as the K-corona, it is also linearly polarized. We investigate the possibility of…
View article: Thomson Scattering above Solar Active Regions and an Ad Hoc Polarization Correction Method for the Emissive Corona
Thomson Scattering above Solar Active Regions and an Ad Hoc Polarization Correction Method for the Emissive Corona Open
Thomson-scattered photospheric light is the dominant constituent of the lower solar corona’s spectral continuum viewed off-limb at optical wavelengths. Known as the K-corona, it is also linearly polarized. We investigate the possibility of…
View article: A publicly available multi-observatory data set of an enhanced network\n patch from the Photosphere to Corona
A publicly available multi-observatory data set of an enhanced network\n patch from the Photosphere to Corona Open
New instruments sensitive to chromospheric radiation at X-ray, UV, Visible,\nIR, and sub-mm wavelengths have become available that significantly enhance our\nability to understand the bi-directional flow of energy through the\nchromosphere…
View article: Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE). II. Flares and Eruptions
Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE). II. Flares and Eruptions Open
Current state-of-the-art spectrographs cannot resolve the fundamental spatial (subarcseconds) and temporal (less than a few tens of seconds) scales of the coronal dynamics of solar flares and eruptive phenomena. The highest-resolution coro…
View article: Measurements of Photospheric and Chromospheric Magnetic Field Structures Associated with Chromospheric Heating over a Solar Plage Region
Measurements of Photospheric and Chromospheric Magnetic Field Structures Associated with Chromospheric Heating over a Solar Plage Region Open
In order to investigate the relation between magnetic structures and the signatures of heating in plage regions, we observed a plage region with the He i 1083.0 nm and Si i 1082.7 nm lines on 2018 October 3 using the integral field unit mo…
View article: Measurements of Photospheric and Chromospheric Magnetic Field Structures\n Associated with Chromospheric Heating over a Solar Plage Region
Measurements of Photospheric and Chromospheric Magnetic Field Structures\n Associated with Chromospheric Heating over a Solar Plage Region Open
In order to investigate the relation between magnetic structures and the\nsignatures of heating in plage regions, we observed a plage region with the He\nI 1083.0 nm and Si I 1082.7 nm lines on 2018 October 3 using the integral field\nunit…
View article: Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST) Open
View article: The Daniel K. Inouye Solar Telescope – Observatory Overview
The Daniel K. Inouye Solar Telescope – Observatory Overview Open
We present an overview of the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST), its instruments, and support facilities. The 4 m aperture DKIST provides the highest-resolution observations of the Sun ever achieved. Th…
View article: Polarization modeling and predictions for Daniel K. Inouye Solar Telescope, part 6: fringe mitigation with polycarbonate modulators and optical contact calibration retarders
Polarization modeling and predictions for Daniel K. Inouye Solar Telescope, part 6: fringe mitigation with polycarbonate modulators and optical contact calibration retarders Open
Interference fringes are a major source of systematic error in astronomical spectropolarimeters. We apply the Berreman formalism with recent spatial fringe aperture averaging estimates to design and fabricate new fringe-suppressed polariza…
View article: Instrument Calibration of the Interface Region Imaging Spectrograph (IRIS) Mission
Instrument Calibration of the Interface Region Imaging Spectrograph (IRIS) Mission Open
View article: Formation of the UV Spectrum of Molecular Hydrogen in the Sun
Formation of the UV Spectrum of Molecular Hydrogen in the Sun Open
Ultraviolet (UV) lines of molecular hydrogen have been observed in solar spectra for almost four decades, but the behavior of the molecular spectrum and its implications for solar atmospheric structure are not fully understood. Data from t…
View article: Formation of the UV Spectrum of Molecular Hydrogen in the Sun
Formation of the UV Spectrum of Molecular Hydrogen in the Sun Open
Ultraviolet lines of molecular hydrogen have been observed in solar spectra for almost four decades, but the behavior of the molecular spectrum and its implications for solar atmospheric structure are not fully understood. Data from the HR…