Tootfinder

This https://arxiv.org/abs/2401.14970 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Microwave lymphedema assessment using deep learning with contour assisted backprojection
We present a method for early detection of lymphatic fluid accumulation in lymphedema patients based on microwave imaging of the limb volume across an air gap. The proposed algorithm uses contour information of the imaged limb surface to approximate the wave propagation velocity locally to solve the eikonal equation for implementing the adjoint imaging operator. This modified backprojection algorithm results in focused imagery close to the limb surface where lymphatic fluid accumulation present…

This https://arxiv.org/abs/2401.14970 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Microwave lymphedema assessment using deep learning with contour assisted backprojection
We present a method for early detection of lymphatic fluid accumulation in lymphedema patients based on microwave imaging of the limb volume across an air gap. The proposed algorithm uses contour information of the imaged limb surface to approximate the wave propagation velocity locally to solve the eikonal equation for implementing the adjoint imaging operator. This modified backprojection algorithm results in focused imagery close to the limb surface where lymphatic fluid accumulation present…

The role of stochastic Fermi-type particle acceleration in the inner jets of Active Galactic Nuclei
Jieshuang Wang, Frank M. Rieger, Yosuke Mizuno
https://arxiv.org/abs/2404.08625

The role of stochastic Fermi-type particle acceleration in the inner jets of Active Galactic Nuclei
High-resolution radio observations of nearby active galactic nuclei have revealed extended, limb-brightened structures in their inner jets. This ties in with other multi-wavelength observations from radio to X-ray and gamma-ray, indicating that a structured jet model is required. While electrons need to be kept energized to account for the observed features, the underlying particle acceleration mechanism is still unclear. We explore the role of stochastic Fermi-type particle acceleration, i.e.,…

#SilentSunday
Great Horned Owl. September 2023

To Reach the Unreachable: Exploring the Potential of VR Hand Redirection for Upper Limb Rehabilitation
Peixuan Xiong, Yukai Zhang, Nandi Zhang, Shihan Fu, Xin Li, Yadan Zheng, Jinni Zhou, Xiquan Hu, Mingming Fan
https://arxiv.org/abs/2403.05264

To Reach the Unreachable: Exploring the Potential of VR Hand Redirection for Upper Limb Rehabilitation
Rehabilitation therapies are widely employed to assist people with motor impairments in regaining control over their affected body parts. Nevertheless, factors such as fatigue and low self-efficacy can hinder patient compliance during extensive rehabilitation processes. Utilizing hand redirection in virtual reality (VR) enables patients to accomplish seemingly more challenging tasks, thereby bolstering their motivation and confidence. While previous research has investigated user experience and…

"does a distributed brain work like a CRDT?"
"do each of the arms operate like an octopus?"
"does it act strategically so that when notified by one limb of a vastly changed threat landscape it can anticipate it?"
"what happens if multiple things surprise it before the synapses can sync the cluster?"
more gelbrain dystopia stuff

The role of stochastic Fermi-type particle acceleration in the inner jets of Active Galactic Nuclei
Jieshuang Wang, Frank M. Rieger, Yosuke Mizuno
https://arxiv.org/abs/2404.08625

The role of stochastic Fermi-type particle acceleration in the inner jets of Active Galactic Nuclei
High-resolution radio observations of nearby active galactic nuclei have revealed extended, limb-brightened structures in their inner jets. This ties in with other multi-wavelength observations from radio to X-ray and gamma-ray, indicating that a structured jet model is required. While electrons need to be kept energized to account for the observed features, the underlying particle acceleration mechanism is still unclear. We explore the role of stochastic Fermi-type particle acceleration, i.e.,…

Exoplanet WASP-76b is that it is an ultra-hot Jupiter,
so at least its day side does not have the clouds and hazes that often obscure the atmospheres of cooler hot Jupiters.
This makes atmospheric emissions much easier to detect.
There is not much gaseous iron in the upper atmosphere of the day-side limb compared to that of the night-side limb.
This is probably because it rains iron on the day side of WASP-76b,
which then condenses into clouds of iron on the …

Glow of an exoplanet may be from starlight reflecting off liquid iron
A phenomenon called a "glory" may be happening on a hellishly hot giant planet.

Stellar Surface Magnetic Fields Impact Limb Darkening
Nadiia M. Kostogryz, Alexander I. Shapiro, Veronika Witzke, Robert H. Cameron, Laurent Gizon, Natalie A. Krivova, Hans-G. Ludwig, Pierre F. L. Maxted, Sara Seager, Sami K. Solanki, Jeff Valenti
https://arxiv.org/abs/2403.00118

Stellar Surface Magnetic Fields Impact Limb Darkening
Stars appear darker at their limbs than at their disk centers because at the limb we are viewing the higher and cooler layers of stellar photospheres. Limb darkening derived from state-of-the-art stellar atmosphere models systematically fails to reproduce recent transiting exoplanet light curves from the Kepler, TESS, and JWST telescopes -- stellar brightness obtained from measurements drops less steeply towards the limb than predicted by models. All previous models assumed atmosphere devoid of…

Yeah, I'm going to go out on a limb here, and say this "new turn" is not new at all.

Human-Exoskeleton Interaction Portrait
Mohammad Shushtari, Julia Foellmer, Arash Arami
https://arxiv.org/abs/2403.06851 https://arxiv…

Human-Exoskeleton Interaction Portrait
Human-robot physical interaction contains crucial information for optimizing user experience, enhancing robot performance, and objectively assessing user adaptation. This study introduces a new method to evaluate human-robot co-adaptation in lower limb exoskeletons by analyzing muscle activity and interaction torque as a two-dimensional random variable. We introduce the Interaction Portrait (IP), which visualizes this variable's distribution in polar coordinates. We applied this metric to compa…

#SilentSunday
Great Horned Owl. September 2023

Human-Exoskeleton Interaction Portrait
Mohammad Shushtari, Julia Foellmer, Arash Arami
https://arxiv.org/abs/2403.06851 https://arxiv…

Human-Exoskeleton Interaction Portrait
Human-robot physical interaction contains crucial information for optimizing user experience, enhancing robot performance, and objectively assessing user adaptation. This study introduces a new method to evaluate human-robot co-adaptation in lower limb exoskeletons by analyzing muscle activity and interaction torque as a two-dimensional random variable. We introduce the Interaction Portrait (IP), which visualizes this variable's distribution in polar coordinates. We applied this metric to compa…

A compilation of solar atlases (from Delbouille, Kurucz, Gandorfer, Stenflo) at disk centre and at limb from $\lambda$ 3000 {\AA} to $\lambda$ 8800 {\AA}
Jean-Marie Malherbe
https://arxiv.org/abs/2404.16902

A compilation of solar atlases (from Delbouille, Kurucz, Gandorfer, Stenflo) at disk centre and at limb from $λ$ 3000 Å to $λ$ 8800 Å
We present in this paper a compilation of solar atlases from $λ$ 3000 Å to $λ$ 8800 Å with spectral lines identified by the Moore table and with the corresponding equivalent Lande factors g*. We used two spectra at disk centre ($μ$ = 1.0), from Delbouille and Kurucz, and two spectra at the limb from Stenflo and Gandorfer, respectively at $μ$ = 0.145 and $μ$ = 0.10.

Formation of limb-brightened radio jets by angle-dependent energy extraction from rapidly rotating black holes
Kouichi Hirotani, Hsien Shang, Ruben Krasnopolsky, Kenichi Nishikawa
https://arxiv.org/abs/2403.03574

Formation of limb-brightened radio jets by angle-dependent energy extraction from rapidly rotating black holes
By general relativistic magnetohydrodynamic simulations, it is suggested that the rotational energy of a rapidly rotating black hole (BH) is preferentially extracted along the magnetic field lines threading the event horizon in the middle and lower latitudes. Applying this angle-dependent Poynting flux to the jet downstream, we demonstrate that the jets exhibit limb-brightened structures at various viewing angles, as observed from Mrk 501, M87, and Cyg A between 5 and 75 degrees, and that the l…

Beyond Gait: Learning Knee Angle for Seamless Prosthesis Control in Multiple Scenarios
Pengwei Wang, Yilong Chen, Wan Su, Jie Wang, Teng Ma, Haoyong Yu
https://arxiv.org/abs/2404.06772

Beyond Gait: Learning Knee Angle for Seamless Prosthesis Control in Multiple Scenarios
Deep learning models have become a powerful tool in knee angle estimation for lower limb prostheses, owing to their adaptability across various gait phases and locomotion modes. Current methods utilize Multi-Layer Perceptrons (MLP), Long-Short Term Memory Networks (LSTM), and Convolutional Neural Networks (CNN), predominantly analyzing motion information from the thigh. Contrary to these approaches, our study introduces a holistic perspective by integrating whole-body movements as inputs. We pr…

🔊 #NowPlaying on #BBC6Music's #ChrisHawkins
The Shins:
🎵 Phantom Limb
#TheShins
https://open.spotify.com/track/3NPiFBw3mA9qbJfo0nhk6X
https://theshins.bandcamp.com/track/phantom-limb

Multiwavelength observations of a breakout jet at an active region periphery
Pradeep Kayshap, Judith T. Karpen, Pankaj Kumar
https://arxiv.org/abs/2405.04766

Multiwavelength observations of a breakout jet at an active region periphery
We analysed Interface-Region Imaging Spectrograph (IRIS) and the Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) observations of a small coronal jet that occurred at the solar west limb on 2014 August 29. The jet source region, a small bright point, was located at an active-region periphery and contains a fan-spine topology with a mini-filament. Our analysis has identified key features and timings that motivate the following interpretation of this event. As the stressed core f…

Dear the Internet
Do you remember back in 2015 when everyone kept banging on about Sriracha for some fucking reason?
Well, I guarantee that if you go out on a limb and buy a jar of this stuff you will not be able to shut the fuck up about it. It's amazing. #hotsauce #chilli

A pole-to-pole map of hydrocarbons in Saturn's upper stratosphere and mesosphere
Zarah L. Brown, Tommi T. Koskinen, Julianne I. Moses, Sandrine Guerlet
https://arxiv.org/abs/2405.01763

A pole-to-pole map of hydrocarbons in Saturn's upper stratosphere and mesosphere
We analyze data from the final two years of the Cassini mission to retrieve the distributions of methane, ethane, acetylene, ethylene, and benzene in Saturn's upper stratosphere and mesosphere from stellar occultations observed by the Ultraviolet Imaging Spectrograph (UVIS), spanning pole-to-pole. These observations represent the first 2D snapshot with latitude and depth of Saturn's photochemical production region around northern summer solstice. Using UVIS occultations and CIRS limb scans, we …

Finally the winter seems to be losing its ice cold grip... Finally it's possible to go out and take walks without risking life and limb on the ice and snow! Yay! Progress!

Characterizing Solar Center-to-Limb Radial-Velocity Variability with SDO
Michael L. Palumbo III, Steven H. Saar, Rapha\"elle D. Haywood
https://arxiv.org/abs/2404.16747

Characterizing Solar Center-to-Limb Radial-Velocity Variability with SDO
Stellar photospheric inhomogeneities are a significant source of noise which currently precludes the discovery of Earth-mass planets orbiting Sun-like stars with the radial-velocity (RV) method. To complement several previous studies which have used ground- and spaced-based facilities to characterize the RV of the Sun, we here characterize the center-to-limb variability (CLV) of solar RVs arising from various solar-surface inhomogeneities observed by SDO/HMI and SDO/AIA. By using various SDO ob…

Lower Limb Movements Recognition Based on Feature Recursive Elimination and Backpropagation Neural Network
Yongkai Ma, Shili Liang, Zekun Chen
https://arxiv.org/abs/2404.11383

Lower Limb Movements Recognition Based on Feature Recursive Elimination and Backpropagation Neural Network
Surface electromyographic (sEMG) signal serve as a signal source commonly used for lower limb movement recognition, reflecting the intent of human movement. However, it has been a challenge to improve the movements recognition rate while using fewer features in this area of research area. In this paper, a method for lower limb movements recognition based on recursive feature elimination and backpropagation neural network of support vector machine is proposed. First, the sEMG signal of five subj…

🔊 #NowPlaying on #BBC6Music's #ChrisHawkins
The Shins:
🎵 Phantom Limb
#TheShins
https://open.spotify.com/track/3NPiFBw3mA9qbJfo0nhk6X
https://theshins.bandcamp.com/track/phantom-limb

MOB-Net: Limb-modularized Uncertainty Torque Learning of Humanoids for Sensorless External Torque Estimation
Daegyu Lim, Myeong-Ju Kim, Junhyeok Cha, Jaeheung Park
https://arxiv.org/abs/2402.11221

MOB-Net: Limb-modularized Uncertainty Torque Learning of Humanoids for Sensorless External Torque Estimation
Momentum observer (MOB) can estimate external joint torque without requiring additional sensors, such as force/torque or joint torque sensors. However, the estimation performance of MOB deteriorates due to the model uncertainty which encompasses the modeling errors and the joint friction. Moreover, the estimation error is significant when MOB is applied to high-dimensional floating-base humanoids, which prevents the estimated external joint torque from being used for force control or collision …

Designing Upper-Body Gesture Interaction with and for People with Spinal Muscular Atrophy in VR
Jingze Tian, Yingna Wang, Keye Yu, Liyi Xu, Junan Xie, Franklin Mingzhe Li, Yafeng Niu, Mingming Fan
https://arxiv.org/abs/2403.16107

Designing Upper-Body Gesture Interaction with and for People with Spinal Muscular Atrophy in VR
Recent research proposed gaze-assisted gestures to enhance interaction within virtual reality (VR), providing opportunities for people with motor impairments to experience VR. Compared to people with other motor impairments, those with Spinal Muscular Atrophy (SMA) exhibit enhanced distal limb mobility, providing them with more design space. However, it remains unknown what gaze-assisted upper-body gestures people with SMA would want and be able to perform. We conducted an elicitation study in …

Negative-energy waves in the vertical threads of a solar prominence
Jincheng Wang, Dong Li, Chuan Li, Yijun Hou, Zhike Xue, Zhe Xu, Liheng Yang, Qiaoling Li
https://arxiv.org/abs/2404.03199

Negative-energy waves in the vertical threads of a solar prominence
Solar prominences, intricate structures on the Sun's limb, have been a subject of fascination due to their thread-like features and dynamic behaviors. Utilizing data from the New Vacuum Solar Telescope (NVST), Chinese H_alpha Solar Explorer (CHASE), and Solar Dynamics Observatory (SDO), this study investigates the transverse swaying motions observed in the vertical threads of a solar prominence during its eruption onset on May 11, 2023. The transverse swaying motions were observed to propagate …

The Molecular Exoskeleton of the Ring-like Planetary Nebula NGC 3132
Joel H. KastnerRochester Institute of Technology, David WilnerCenter for Astrophysics, Harvard,Smithsonian, Paula Moraga BaezRIT, Jesse BublitzGreen Bank Observatory, Orsola De MarcoMacquarie University, Raghvendra SahaiJet Propulsion Laboratory, Al WoottenNRAO
https://

The Molecular Exoskeleton of the Ring-like Planetary Nebula NGC 3132
We present Submillimeter Array (SMA) mapping of $^{12}$CO $J=2\rightarrow 1$, $^{13}$CO $J=2\rightarrow 1$, and CN $N=2\rightarrow 1$ emission from the Ring-like planetary nebula (PN) NGC 3132, one of the subjects of JWST Early Release Observation (ERO) near-infrared imaging. The $\sim$5$''$ resolution SMA data demonstrate that the Southern Ring's main, bright, molecule-rich ring is indeed an expanding ring, as opposed to a limb-brightened shell, in terms of its intrinsic (physical) structure. …

Quenching-driven equatorial depletion and limb asymmetries in hot Jupiter atmospheres: WASP-96b example
Maria Zamyatina, Duncan A. Christie, Eric H\'ebrard, Nathan J. Mayne, Michael Radica, Jake Taylor, Harry Baskett, Ben Moore, Craig Lils, Denis Sergeev, Eva-Maria Ahrer, James Manners, Krisztian Kohary, Adina D. Feinstein
https://

Quenching-driven equatorial depletion and limb asymmetries in hot Jupiter atmospheres: WASP-96b example
Transport-induced quenching in hot Jupiter atmospheres is a process that determines the boundary between the part of the atmosphere at chemical equilibrium and the part of the atmosphere at thermochemical (but not photothermochemical) disequilibrium. The location of this boundary, the quench level, depends on the interplay between the dynamical and chemical timescales in the atmosphere, with quenching occurring when these timescales are equal. We explore the sensitivity of the quench level posi…

Stiffness-Tuneable Limb Segment with Flexible Spine for Malleable Robots
Angus B. Clark, Nicolas Rojas
https://arxiv.org/abs/2404.09653 https://

Stiffness-Tuneable Limb Segment with Flexible Spine for Malleable Robots
Robotic arms built from stiffness-adjustable, continuously bending segments serially connected with revolute joints have the ability to change their mechanical architecture and workspace, thus allowing high flexibility and adaptation to different tasks with less than six degrees of freedom, a concept that we call malleable robots. Known stiffening mechanisms may be used to implement suitable links for these novel robotic manipulators; however, these solutions usually show a reduced performance …

The dependence of the magnetism of a near-limb sunspot on height
M. Benko (Astronomical Institute, Slovak Academy of Sciences, Tatransk\'a Lomnica, Slovakia), H. Balthasar (Leibniz-Institute for Astrophysics Potsdam, Germany), P. G\"om\"ory (Astronomical Institute, Slovak Academy of Sciences, Tatransk\'a Lomnica, Slovakia), C. Kuckein (Instituto de Astrof\'isica de Canarias, Departamento de Astrof\'isica, Universidad de La Laguna, La Laguna, Tenerife, Spain, M…

The dependence of the magnetism of a near-limb sunspot on height
The physical parameters of the sunspot are not fully understood, especially the height dependence of the magnetic field. So far, it is also an open question as to which heights the He I 1083 nm spectral line is formed at. Our aim is to investigate the magnetic and dynamical properties in the atmosphere above a sunspot, from the photosphere to the chromosphere. We analyzed the photospheric and chromospheric magnetic field properties of a stable sunspot in AR 12553 on June 20, 2016 using spectrop…

Using Capability Maps Tailored to Arm Range of Motion in VR Exergames for Rehabilitation
Christian Lourido, Zaid Waghoo, Hassam Khan Wazir, Nishtha Bhagat, Vikram Kapila
https://arxiv.org/abs/2404.12504

Using Capability Maps Tailored to Arm Range of Motion in VR Exergames for Rehabilitation
Many neurological conditions, e.g., a stroke, can cause patients to experience upper limb (UL) motor impairments that hinder their daily activities. For such patients, while rehabilitation therapy is key for regaining autonomy and restoring mobility, its long-term nature entails ongoing time commitment and it is often not sufficiently engaging. Virtual reality (VR) can transform rehabilitation therapy into engaging game-like tasks that can be tailored to patient-specific activities, set goals, …

A novel seamless magnetic-based actuating mechanism for end-effector-based robotic rehabilitation platforms
Sima Ghafoori, Ali Rabiee, Musa Jouaneh, Reza Abiri
https://arxiv.org/abs/2404.01441

A novel seamless magnetic-based actuating mechanism for end-effector-based robotic rehabilitation platforms
In this pioneering study, we unveiled a groundbreaking approach for actuating rehabilitation robots through the innovative use of magnetic technology as a seamless haptic force generator, offering a leap forward in enhancing user interface and experience, particularly in end-effector-based robots for upper-limb extremity motor rehabilitation. We employed the Extended Kalman Filter to meticulously analyze and formalize the robotic system's nonlinear dynamics, showcasing the potential of this sop…

This https://arxiv.org/abs/2312.13298 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

A horseshoe-shaped ring of diffuse emission detected at 1.4 GHz
We identify a horseshoe-shaped ring (HSR) of diffuse emission in J1407+0453 from the Faint Images of Radio Sky at Twenty-cm (FIRST) survey using the Very Large Array telescope. An optical galaxy SDSSJ140709.01+045302.1 is present near the limb of the HSR of J1407+0453, with a spectroscopic redshift of $z=0.13360$. The total extent of the source, including the diffuse emission of J1407+0453, is 65 arcsec (with a physical extent of 160 kpc), whereas the diameter of the HSR is approximately 10 arc…

This https://arxiv.org/abs/2404.10463 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

High-resolution atmospheric retrievals of WASP-76b transmission spectroscopy with ESPRESSO: Monitoring limb asymmetries across multiple transits
Direct atmospheric retrievals of exoplanets at high-resolution have recently allowed for a more detailed characterisation of their chemistry and dynamics from the ground. By monitoring the longitudinal distribution of species, as well as the varying vertical temperature structure and dynamics between the limbs of WASP-76b, across multiple transits, we aim to enhance our understanding of the 3D nature and chemical/dynamical evolution of such objects over the timescales of months/years. We presen…

Spinning solar jets explained through the interplay between plasma sheets and vortex columns
Sahel Dey, Piyali Chatterjee, Robertus Erdelyi
https://arxiv.org/abs/2404.16096

Spinning solar jets explained through the interplay between plasma sheets and vortex columns
Bunches of swaying and spinning plasma jets in the solar atmosphere - the spicules - exhibit a variety of complex dynamics that are clearly observed in the images of the solar limb. Utilizing three-dimensional radiative magnetohydrodynamics (rMHD) simulation data, we uncover another facet of a forest of spicules that turns out to be a manifestation of the two-dimensional plasma drapery, instead of one-dimensional conical spikes. This fluted morphology is observed in other contexts like molecula…

Spectropolarimetry of Fraunhofer lines in local upper solar atmosphere
Z. Q. Qu (Yunnan Astronomical Observatories, CAS, Kunming, Yunnan, China, School of Astronomy and Space Science, University of Chinese Academy of Sciences, Chaoyang district, Beijing, China), L. Chang (Yunnan Astronomical Observatories, CAS, Kunming, Yunnan, China, School of Astronomy and Space Science, University of Chinese Academy of Sciences, Chaoyang district, Beijing, China), G. T. Dun (Yunnan Astronomical Obse…

Spectropolarimetry of Fraunhofer lines in local upper solar atmosphere
Spectropolarimetric results of Fraunhofer lines between 516.3nm and 532.6nm are presented in local upper solar chromosphere, transition zone and inner corona below a height of about 0.04 solar radius above the solar limb. The data were acquired on Nov.3, 2013 during a total solar eclipse in Gabon by the prototype Fiber Arrayed Solar Optical Telescope(FASOT). It is found that the polarization amplitudes of the Fraunhofer lines in these layers depend strongly on specific spectral lines. Fraunhofe…

Terrain-Aware Stride-Level Trajectory Forecasting for a Powered Hip Exoskeleton via Vision and Kinematics Fusion
Ruoqi Zhao, Xingbang Yan, Yubo Fan
https://arxiv.org/abs/2404.11945

Terrain-Aware Stride-Level Trajectory Forecasting for a Powered Hip Exoskeleton via Vision and Kinematics Fusion
Powered hip exoskeletons have shown the ability for locomotion assistance during treadmill walking. However, providing suitable assistance in real-world walking scenarios which involve changing terrain remains challenging. Recent research suggests that forecasting the lower limb joint's angles could provide target trajectories for exoskeletons and prostheses, and the performance could be improved with visual information. In this letter, We share a real-world dataset of 10 healthy subjects walki…

The Bright Rim Prominences according to 2.5D Radiative Transfer
Jack M. Jenkins, Christopher M. J. Osborne, Ye Qiu, Rony Keppens, Chuan Li
https://arxiv.org/abs/2403.09931

The Bright Rim Prominences according to 2.5D Radiative Transfer
Solar prominences observed close to the limb commonly include a bright feature that, from the perspective of the observer, runs along the interface between itself and the underlying chromosphere. Despite several idealised models being proposed to explain the underlying physics, a more general approach remains outstanding. In this manuscript we demonstrate as a proof-of-concept the first steps in applying the Lightweaver radiative transfer framework's 2.5D extension to a `toy' model prominence +…

Spectroscopic Observations of the Solar Corona during the 2017 August 21 Total Solar Eclipse: Comparison of Spectral Line Widths and Doppler Shifts Between Open and Closed Magnetic Structures
Yingjie Zhu, Shadia R. Habbal, Adalbert Ding, Bryan Yamashiro, Enrico Landi, Benjamin Boe, Sage Constantinou, Michael Nassir
https://arxiv…

Spectroscopic Observations of the Solar Corona during the 2017 August 21 Total Solar Eclipse: Comparison of Spectral Line Widths and Doppler Shifts Between Open and Closed Magnetic Structures
The spectroscopic observations presented here were acquired during the 2017 August 21 total solar eclipse with a three-channel partially multiplexed imaging spectrometer (3PAMIS) operating at extremely high orders ($>$ 50). The 4 $R_\odot$ extent of the slit in the North-South direction scanned the corona starting from the central meridian out to approximately 1.0 $R_\odot$ off the east limb throughout totality. The line widths and Doppler shifts of the Fe X (637.4 nm) and Fe XIV (530.3 nm) emi…

Coronagraphic observations of Si X 1430 nm acquired by DKIST/Cryo-NIRSP with methods for telluric absorption correction
T. A. Schad, A. Fehlmann, G. I. Dima, J. R. Kuhn, I. F. Scholl, D. Harrington, T. Rimmele, A. Tritschler, A. R. Paraschiv
https://arxiv.org/abs/2402.09632

Coronagraphic observations of Si X 1430 nm acquired by DKIST/Cryo-NIRSP with methods for telluric absorption correction
We report commissioning observations of the Si X 1430 nm solar coronal line observed coronagraphically with the Cryogenic Near-Infrared Spectropolarimeter (Cryo-NIRSP) at the National Science Foundation's Daniel K. Inouye Solar Telescope (DKIST). These are the first known spatially resolved observations of this spectral line, which has strong potential as a coronal magnetic field diagnostic. The observations target a complex active region located on the solar northeast limb on 4 March 2022. We …