Tootfinder

Limb-Darkening Coefficients for the 4-Term and Power-2 Laws for the JWST Space Mission, Adopting PHOENIX Spherical Models at High Resolution
A. Claret (IAA), P. H. Hauschildt (Hamburger Sternwarte), G. Torres (CfA)
https://arxiv.org/abs/2506.07265

Limb-Darkening Coefficients for the 4-Term and Power-2 Laws for the JWST Space Mission, Adopting PHOENIX Spherical Models at High Resolution
Modeling observations of transiting exoplanets or close binary systems by comparing the observations with theoretical light curves requires precise knowledge of the distribution of specific intensities across the stellar disk. We aim to facilitate this type of research by providing extensive tabulations of limb-darkening coefficients for 11 frequently used near- and mid-infrared passbands on the NIRCam, NIRISS, and NIRSpec instruments installed on board the James Webb Space Telescope. The calcu…

Towards Biosignals-Free Autonomous Prosthetic Hand Control via Imitation Learning
Kaijie Shi, Wanglong Lu, Hanli Zhao, Vinicius Prado da Fonseca, Ting Zou, Xianta Jiang
https://arxiv.org/abs/2506.08795

Towards Biosignals-Free Autonomous Prosthetic Hand Control via Imitation Learning
Limb loss affects millions globally, impairing physical function and reducing quality of life. Most traditional surface electromyographic (sEMG) and semi-autonomous methods require users to generate myoelectric signals for each control, imposing physically and mentally taxing demands. This study aims to develop a fully autonomous control system that enables a prosthetic hand to automatically grasp and release objects of various shapes using only a camera attached to the wrist. By placing the ha…

Calamus 15 O drops of me!
It's a remarkably morbid poem for Whitman, literally about blood dropping from wounds, corrupting his poetry.
stain every song I sing, every word I say, bloody drops
But he turns this blood into a sort of virtue that infuses his poem, starting with an inversion. It's not "saturate yourself with the drops". Instead it's saturate them with yourself.
Saturate them with yourself, all ashamed and wet,
Glow upon all I have written or shall write, bleeding drops,
Let it all be seen in your light, blushing drops.
I can make a case for a queer reading of recognizing gay shame and overcoming it. To take the stigma of homosexuality and turn it into a virtue, "let it all be seen in your light".
But I think I may be out on a limb with that interpretation. Whitman's not typically a writer about shame. And I think "gay shame" doesn't apply well as a concept in the 1850s, that's a malady that comes with a backlash against modern gay identity.

High-resolution Observations of a C9.3 White-light Flare and Its Impact on the Solar Photosphere
Zhe Xu, Xiaoli Yan, Zhentong Li, Liheng Yang, Zhike Xue, Jincheng Wang, Yian Zhou
https://arxiv.org/abs/2506.08411

High-resolution Observations of a C9.3 White-light Flare and Its Impact on the Solar Photosphere
We present a detailed analysis of a C9.3 white-light flare using high-resolution observations from the New Vacuum Solar Telescope (NVST). The flare occurred near the eastern solar limb on September 11, 2023, within NOAA AR 13431, and produced beam electrons with energies just below 50 keV as observed by the the Hard X-ray Imager (HXI) onboard the Advanced Space-based Solar Observatory (ASO-S). Two white-light flare kernels were detected in the TiO band, connected by filamentary brightenings ali…

Comparing observations of the closely located JUICE and STEREO-A spacecraft during the widespread solar energetic particle event of 2024 May 13
L. Rodr\'iguez-Garc\'ia, E. Palmerio, M. Pinto, N. Dresing, C. M. S. Cohen, R. G\'omez-Herrero, J. Gieseler, F. Santos, F. Espinosa Lara, I. Cernuda, M. Mewes, C. Vallat, O. Witasse, N. Altobelli
…

Comparing observations of the closely located JUICE and STEREO-A spacecraft during the widespread solar energetic particle event of 2024 May 13
JUICE was launched in April 2023, and it is now in its cruise phase to Jupiter, where it is scheduled to arrive in July 2031. JUICE carries a radiation monitor, namely the RADiation hard Electron Monitor (RADEM) to measure protons, electrons, and ions, detecting particles coming mainly from the anti-Sun direction. On 2024 May 13, a large solar energetic particle (SEP) event took place in association with an eruption close to the western limb of the Sun as seen from Earth. Providentially, at tha…

This https://arxiv.org/abs/2501.01009 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Detection of "diffuse" coronal He I 1083 during the April 8 2024 Solar Eclipse: evidence for terrestrial atmospheric scattering origin
Strong He I 1083 nm atomic line signals have been previously measured during total solar eclipses at coronal heights above the lunar limb. This rather unexpected measurement has kindled a discussion about the hypothesized presence of significant amounts of neutral helium at coronal conditions. We performed spectroscopic observations of the He I 1083 nm spectroscopic region with the newly built CHEESE instrument during the April 8th 2024 total solar eclipse to test the presence of He I 1083 in t…

Spectroscopic Observations of Supra-Arcade Downflows
Ryan J. French, Maria D. Kazachenko, Teodora Mihailescu, Katharine K. Reeves
https://arxiv.org/abs/2505.22624

Spectroscopic Observations of Supra-Arcade Downflows
Despite their somewhat-frequent appearance in EUV imaging of off-limb flares, the origins of Supra-Arcade Downflows (SADs) remain a mystery. Appearing as dark, tendril-like downflows above growing flare loop arcades, SADs themselves are yet to be tied into the standard model of solar flares. The uncertainty of their origin is, in part, due to a lack of spectral observations, with the last published SAD spectral observations dating back to the Solar and Heliospheric Observatory / Solar Ultraviol…

Thirty-Three New Stellar Angular Diameters from the NPOI, and Nearly 180 NPOI Diameters as an Ensemble
Ellyn K. Baines, James H. Clark III, Henrique R. Schmitt, Jordan M. Stone, Kaspar von Braun
https://arxiv.org/abs/2505.23514

Thirty-Three New Stellar Angular Diameters from the NPOI, and Nearly 180 NPOI Diameters as an Ensemble
We present new angular diameter measurements for 33 stars from the Navy Precision Optical Interferometer, reaching uncertainties on the limb-darkened diameter of 2% or less for 21 targets. We also determined the physical radius, bolometric flux, luminosity, and effective temperature for each star. Our sample is a mix of giant, subgiant, and dwarf stars, and span spectral classes from mid-A to to mid-K. We combined these 33 stars with samples from previous publications to analyze how the NPOI di…