cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.hca2py
title: ExEP: Black silicon characterization for coronagraphs (paper)

description: The Habitable Worlds Observatory (HWO) flagship mission plans to image and spectrally characterize earth-like exoplanets at 10−10 planet-to-star contrast with a coronagraph instrument. HWO’s 6-meter primary mirror will mostly likely be segmented for launch-related mass and packaging constraints. To suppress the extra diffraction from the primary mirror segmentation, a pupil apodizer mask could be used as part of several coronagraphic architectures. Reflective amplitude apodizers using cryogenic black silicon have already been flight qualified to 4 × 10−9 contrast for the Roman Space Telescope. In this paper, we detail our laboratory experiments and numerical simulations to characterize the amount of stray light from black silicon at levels relevant to HWO’s contrast budget.
DOI: 10.48577/jpl.qqgy2q
title: ExEP: Automated fine alignment and calibration of the Roman Coronagraph Instrument (paper)

description: The Decadal Survey on Astronomy and Astrophysics 2020 recommended that the next NASA flagship be a 6-meter telescope equipped with a coronagraph instrument to enable imaging and spectroscopy of earth-like exoplanets, which are on the order of 10−10 times fainter than their host stars in visible light. In preparation, the 2.4-meter Nancy Grace Roman Space Telescope (Roman) will launch by mid-2027 and its Coronagraph Instrument will demonstrate several key technologies at high contrast such as two different coronagraph types, high-actuator-count deformable mirrors, photon counting detectors, and low-order and high-order wavefront sensing and control (HOWFSC) loops. The performance of the model-based HOWFSC algorithms depends heavily on the accuracy of the calibrations and the alignments of the coronagraphic optical masks. For the Roman Coronagraph Instrument to achieve its desired performance of better than 10−8 contrast, the fine alignment and calibration routines must be both accurate and precise. The best way to guarantee such performance was to automate these routines. Due to the complexities of handshakes between ground and flight software and to monitor data quality, a person must still be part of the loop but does not perform any calculations manually. In this paper, we detail the strict requirements for fine alignment and calibration, the algorithms used, and the measured performance in thermal vacuum testing of the Roman Coronagraph Instrument.
DOI: 10.48577/jpl.oqv1dt
title: HabitableWorld Discovery and Characterization: Coronagraph Concept of Operations and Data Post-Processing

description: The discovery and characterization of habitable worlds was the top scientific recommendation of the Astro2020 decadal survey and is a key objective of the HabitableWorlds Observatory. Biosignature identification drives exceedingly challenging observations, which require raw contrasts of roughly 10−10 contrast and ultimately, 1σ photometric precision of roughly 3× 10−12 contrast. Despite significant advances for the Nancy Grace Roman Space Telescope’s Coronagraph Instrument, technological gaps still exist in a wide range of technologies such as starlight suppression, deformable mirrors, wavefront control, low noise detectors, and high-contrast spectroscopy. Even with these new technologies matured, the Habitable Worlds Observatory must carefully obtain the observations and rely on post-processing of the data to achieve its science objectives. During the START and TAG efforts, a working group was convened to explore the coronagraph concept of operations and post-processing (COPP) in the context of the Habitable Worlds Observatory. This COPP working group evaluated coronagraphic concept of operations to enable different post processing approaches, such as reference differential imaging and angular differential imaging, polarization differential imaging, orbital differential imaging, coherent differential imaging, spectral processing, and point-spread function subtraction algorithms that incorporate ancillary telemetry and data. Future integrated modeling simulations and testbed demonstrations are needed to determine the achievable post processing gains for each approach. We report a summary of this working group’s activities and findings, as well as an outlook for maturation of these techniques and infusion into the Habitable Worlds Observatory technology portfolio.
DOI: 10.15468/dl.jqnqns
title: Occurrence Download

description: A dataset containing 321 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Spatholobus suberectus"
 ]
}

 The dataset includes 321 records from 29 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011471-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.ovje5g
title: Centralized Data Processing as an Added Value to Multi-network Data Integration: Lessons Learned from the Development of the Global Lidar Data Analysis Software Suite (GLASS)

description: No abstract available.
DOI: 10.48577/jpl.ogpnag
title: AGU poster - The Potential of the OCO-2 Observations to Constrain Air-sea CO2 Fluxes

description: No abstract available.
DOI: 10.48577/jpl.mwjjvl
title: Toward deep single-mode cross-aperture nulling

description: Exoplanets can potentially be observed very close to stars using single-mode cross-aperture nulling interferometry, an optical-fiber based approach in which starlight rejection occurs as a result of a coupling mismatch between an anti-symmetric stellar input field and a symmetric fiber mode. The input stellar point-spread function is first modified by passage through an appropriate upstream pupil-plane phase mask, such as a phase-knife mask, which provides a -radian phase step, or equivalently, a relative field reversal, across a pupil bisector. Using a phase mask with a “crossed” half-wave plate structure to produce the desired relative field reversal, a narrowband null depth of 2.2  10-5 has been demonstrated in the laboratory, a rejection level that is sufficient for the detection of Hot Jupiters with large ground-based telescopes. Moreover, as is shown here, phase masks with slightly more complex spatial patterns can in theory lower the stellar leakage due to finite stellar diameters into the 10-9 to 10-10 range needed for terrestrial exoplanet observations. Because nulling performance improves with wavelength, near-infrared cross-aperture nulling may thus be able to serve as a long-wavelength complement to visible wavelength coronagraphy on future exoplanet missions such as the Habitable Worlds Observatory.
DOI: 10.48577/jpl.dkos80
title: AGU poster- The Spatial and Temporal Variability of African Biosphere Carbon Fluxes Observed from Space

description: No abstract available.
DOI: 10.48577/jpl.tyz4hb
title: Constraining carbon cycle dynamics using space-based observations

description: No abstract available.
DOI: 10.48577/jpl.8utszi
title: Experimental demonstration of self-injection locking and stimulated Brillouin scattering in photonic integrated 4H-SiC microresonators

description: No abstract available.
DOI: 10.48577/jpl.mgiaas
title: AI On-board of Satellites: Towards Autonomous Scientific Instruments

description: No abstract available.
DOI: 10.48577/jpl.kwfj4d
title: Feasibility Study of a Forked Grating Scalar Vortex Coronagraph for the Habitable Worlds Observatory

description: NASA’s ambitious plan of imaging 25 Earth-like planets with its future Habitable Worlds Observatory requires a coronagraph reaching contrast on the order of 10−10 across a broad band. One of the most promising architectures to achieve this goal is a vortex coronagraph, providing a good tradeoff between small inner working angle, and high throughput, as well as low sensitivity to low order aberrations. Current vortex coronagraphs are of vectorial nature and have shown promising results so far, however they imprint opposite phase ramps on the two circular polarizations making wavefront control in both polarizations simultaneously challenging. An alternative to the vector vortex is the polarization-independent scalar vortex coronagraph, which imprints the same phase ramp regardless of polarization. Current scalar vortex phase mask implementations are however limited by their chromaticity. Here, we present a design study for a scalar vortex phase mask combined with a phase grating. We show that this architecture is capable of spatially separating the chromatic leakage from the vortex beam, and present simulation results of this concept. We then discuss different implementations based on shaped dielectric masks, or metasurfaces. Finally, we discuss potential manufacturing approaches to fabricate the forked grating scalar vortex phase mask, and their feasibility in light of HWO.
DOI: 10.48577/jpl.rtqzv3
title: Experimental progress in single-mode cross-aperture nulling

description: Single-mode (SM) cross-aperture nulling (CAN) can be used to observe faint exoplanets closer to their host stars than classical coronagraphs can reach, and also to extend observations of coronagraphically detected exoplanets to longer wavelengths. CAN can be implemented on an existing coronagraphic bench with a small number of additional optics, which are based on simple technologies such as optical phase masks and SM fibers. Here we present recent laboratory CAN results showing point source null depths (leakages) of ~ 3.7  10-7. Such null depths are already sufficient for use in exoplanet detection using large ground-based telescopes, and further work should yield performance of interest to the space-based case.
DOI: 10.48577/jpl.8yyxvx
title: Optically Pumped Solid State Magnetometers for Planetary and Space Science: Inching closer to single-digit nanotesla sensitivities

description: No abstract available.
DOI: 10.48577/jpl.6o7uiv
title: Polarization ray trace-based modeling using preflight characterization of the Multi-Angle Imager for Aerosols (MAIA) satellite instrument

description: The Multi-Angle Imager for Aerosols (MAIA) instrument, developed at the Jet Propulsion Laboratory (JPL), is scheduled for launch into low-Earth orbit in 2026 to investigate the connection between aerosols and public health. To retrieve aerosol properties, the MAIA spectropolarimetric camera will capture radiance images across 14 UV-SWIR wavelength channels. The 440, 646, and 1044 nm bands will also measure the linear Stokes parameters Q and U. A division of time polarimeter, MAIA uses a combination of photo-elastic modulators, compound achromatic waveplates, focal plane polarizers, and rapid detector readout to measure a time modulated polarimetric signal. The instrument completed calibration and testing in 2022 and demonstrated degree of linear polarization (DOLP) uncertainty below 0.005. To monitor performance after launch, a polarization ray-tracing model has been created using CODE V and open-source Python packages. This model predicts the camera's field-angle-dependent Mueller matrix (MM). Contributions from coatings, waveplates, optical filters, and polarizers are incorporated into the model by making use of polarization metrology measurements of the as-built optical components. Critically, the model also includes variations in retardance from MAIA’s compound quarter waveplates as a function of both wavelength and angle. Model output is compared to the measured polarimetric calibration coefficients and used to estimate the clocking alignment of the polarization-critical optics. In orbit, this model will be used with MAIA’s polarized onboard calibrator (OBC) to track any changes in the polarization properties of the camera optics over time.
DOI: 10.48577/jpl.kcgw6d
title: Machine Learning for Interference Detection and Mitigation on Deep Space Telecom Signals

description: No abstract available.
DOI: 10.5281/zenodo.17505674
title: Experimental Data: Structural Coherence in Quantum Many-Body Systems via IBM Quantum Hardware

description: This dataset contains experimental quantum measurements from two independent runs on IBM Quantum's ibm_torino device (127-qubit Eagle r3 processor), demonstrating structural coherence and quantum nonlocality in 8-qubit Greenberger-Horne-Zeilinger (GHZ) states. The experiments provide evidence for universal coherence principles across quantum-classical transitions.

**Experiment 1: Structural Coherence Measurement (October 10, 2025)**- Job ID: d3kfathfk6qs73emfrb0- Structural Coherence: S̄ = 0.935 ± 0.002- Total Shots: 100,000 measurement outcomes

**Experiment 2: Mermin Inequality Violation (October 28, 2025)**- Job ID: d3vvn9460rgc73adkpug- Mermin Observable: M = 3.527 ± 0.022 (69.1σ statistical significance)- Classical Limit: Mc = 2.000 (CHSH bound)- Maximum Quantum: M_max = 4.000 (Tsirelson bound)- Detection Level: Approximately 700σ

**Experimental Parameters:**- Device: ibm_torino (IBM Quantum Eagle r3, 127 qubits)- Job ID 1: d3kfathfk6qs73emfrb0 (October 10, 2025)- Job ID 2: d3vvn9460rgc73adkpug (October 28, 2025)- Total Shots: 200,000 measurement outcomes (100k per experiment)- Entanglement Depth: N = 8 qubits- Measurement Basis: Stabilizer observables

**Dataset Contents:**1. Raw experimental data for structural coherence measurement (JSON format)2. Raw experimental data for Mermin inequality violation (JSON format)3. High-resolution publication figures (300 DPI PNG and vector PDF formats)4. Complete README with reproducibility instructions

**Theoretical Context:**This experiment tests predictions from Theological-Structural Transposition Theory (TSTT), which posits universal structural coherence across quantum and classical scales. The measured value S̄ = 0.935 ± 0.002 aligns with theoretical predictions for 8-qubit GHZ states.

**Reproducibility:**All analysis can be reproduced using Python 3.9+, Qiskit 0.45+, and standard scientific computing libraries (NumPy, SciPy, Matplotlib). Detailed replication instructions are provided in the README file.

**Citation:**If you use this data, please cite: Takagi, T. (2025). Experimental Evidence for Structural Coherence in Quantum Many-Body Systems. Dataset. Zenodo. https://doi.org/10.5281/zenodo.17465085

**Associated Publication (submitted):**Takagi, T. (2025). Structural Coherence Across Quantum-Classical Transitions: Experimental Verification with IBM Quantum Hardware. Physical Review X Quantum (under review).
DOI: 10.48577/jpl.jgzjfj
title: Fundamental and technical limitations of electro-optic E-field sensors

description: No abstract available.
DOI: 10.48577/jpl.k8yusy
title: The Global Geodetic Observing System: Facilitating Opportunities for Strategic Outreach, Collaboration, and Engagement with External Stakeholders

description: No abstract available.
DOI: 10.48577/jpl.cdeidf
title: Assessment of Flow Law Performance: SWOT discharge vs. USGS gage data

description: No abstract available.
DOI: 10.48577/jpl.kzedrm
title: Validation of the OPERA DISP product at a landfill site in Canberra, Australia

description: No abstract available.
DOI: 10.48577/jpl.bq9rmt
title: NASA Probe Mission Concept - PRIMA

description: No abstract available.
DOI: 10.48577/jpl.tnkbui
title: A global archive of accessible, analysis-ready coseismic displacement products for earthquake science applications derived from SAR and optical datasets

description: No abstract available.
DOI: 10.48577/jpl.efsk9b
title: Bellerose_SmallBodyExploration_2025

description: No abstract available.
DOI: 10.48577/jpl.owvmxl
title: Imaging the Dusty Torus Around Supermassive Black Holes

description: Black hole growth is connected to the growth of galaxies and galaxies are the building blocks of the Universe. Black holes at the centers of galaxies grow through mergers and accretion of gas onto the supermassive black hole. As gas falls onto the supermassive black hole at the center of a galaxy, it forms a hot disk, called an accretion disk, that emits enormous amounts of energy from the x-rays to the radio. But this disk is often hidden and there is a lot of evidence that the obscuration is because of a thick dust and gas region around the disk, dubbed the dusty torus. This dusty torus therefore has significant consequences on how this active galactic nucleus (AGN) can affect the evolution of its host galaxy as well as how much energy escapes the galaxy to affect the rest of the Universe. This leads to critical questions like how does the structure of the dust around the accretion disk affect the co-evolution of black holes and their host galaxies? Also, is the dust structure sufficiently thick (The outer edge potentially being as thick as ~120 degrees) to reproduce the observed populations of AGNs? There is great potential for the Habitable Worlds Observatory to image AGNs that have their dust disk oriented edge-on to our vantage point, and so, with the right resolution, can give a direct absorption image of the size and shape of the dusty torus.
DOI: 10.48577/jpl.4l9sd2
title: Generation of spectrally pure W-band signals via optical rectification using monolithic Fabry-Perot cavities

description: No abstract available.
DOI: 10.48577/jpl.rlkeux
title: NISAR L-Band Preliminary Image Calibration Results

description: No abstract available.
DOI: 10.48577/jpl.grz5tl
title: The Lunar Mapping Program (LMAP):An Innovative Approach to Targeted Lunar Geologic Mapping in Support of Future Exploration

description: No abstract available.
DOI: 10.48577/jpl.z6o7o4
title: Optically Pumped Solid State Magnetometers for Planetary and Space Science: Inching closer to single-digit nanotesla sensitivities

description: No abstract available.
DOI: 10.48577/jpl.amcult
title: Observational Products for End-Users from Remote Sensing Analysis

description: No abstract available.
DOI: 10.15468/dl.ug2nf7
title: Occurrence Download

description: A dataset containing 5756 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((119.66737 14.52532,118.75695 23.67286,123.12292 28.27171,154.77654 29.31598,145.79014 80.85185,54.55008 78.06477,38.4144 34.05833,98.31147 15.7223,119.66737 14.52532))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Trigonotis peduncularis"
 ]
}

 The dataset includes 5756 records from 131 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011472-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34740/kaggle/dsv/13585063
title: Daily Public Opinion on Israel-Palestine War
DOI: 10.15468/dl.x5ez73
title: Occurrence Download

description: A dataset containing 7 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Mobula rochebrunei"
 ]
}

 The dataset includes 7 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011474-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34740/kaggle/dsv/13585107
title: Public Opinion on Climate Change (Updated Daily)
DOI: 10.17909/v0rx-d363
title: Galaxy Cluster MACS J0416.1-2403 NIRCam Observations

description: Galaxy Cluster MACS J0416.1-2403 NIRCam Observations
DOI: 10.15468/dl.3z8ydx
title: Occurrence Download

description: A dataset listing the 1149 species recorded in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((3.85277 43.48707,3.90813 43.51661,3.9071 43.51688,3.89935 43.53866,3.84208 43.57287,3.80253 43.55021,3.82216 43.52827,3.81908 43.50883,3.85277 43.48707))",
 "OccurrenceStatus is Present",
 "TaxonKey is Insecta"
 ]
}

 The dataset's 1149 records were derived from 88 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011473-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34740/kaggle/dsv/13585149
title: Peer-to-Peer Boliviano (BOB) Exchange Data
DOI: 10.5281/zenodo.17505559
title: Healing effect of sub-𝑻𝒈 thermal cycling on a  Cu64Zr36 metallic glass: a molecular dynamics  simulation study

description: Dataset for "Healing effect of sub-Tg thermal cycling on a Cu64Zr36 metallic glass: a molecular dynamics simulation study"

This dataset contains all the essential files supporting the findings of the molecular dynamics (MD) simulation study on the healing effect of sub-Tg thermal cycling in Cu64Zr36 metallic glass. The uploaded files include:





LAMMPS input scripts used for sample preparation, deformation simulation, and thermal cycling procedures.




Output data from tensile tests conducted before and after thermal cycling, including stress-strain profiles and structural analysis.




Simulation restart files for reproducibility and further analysis.



All files are organized into compressed folders corresponding to the simulation stages, as detailed in the manuscript. This dataset provides the complete computational workflow and results necessary to reproduce the reported findings.
DOI: 10.5281/zenodo.17505560
title: Healing effect of sub-𝑻𝒈 thermal cycling on a  Cu64Zr36 metallic glass: a molecular dynamics  simulation study

description: Dataset for "Healing effect of sub-Tg thermal cycling on a Cu64Zr36 metallic glass: a molecular dynamics simulation study"

This dataset contains all the essential files supporting the findings of the molecular dynamics (MD) simulation study on the healing effect of sub-Tg thermal cycling in Cu64Zr36 metallic glass. The uploaded files include:





LAMMPS input scripts used for sample preparation, deformation simulation, and thermal cycling procedures.




Output data from tensile tests conducted before and after thermal cycling, including stress-strain profiles and structural analysis.




Simulation restart files for reproducibility and further analysis.



All files are organized into compressed folders corresponding to the simulation stages, as detailed in the manuscript. This dataset provides the complete computational workflow and results necessary to reproduce the reported findings.
DOI: 10.15468/dl.rra3ad
title: Occurrence Download

description: A dataset containing 31 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Some Psocoptera species (Hexapoda, Insecta) new to the fauna of Belarus"
 ]
}

 The dataset includes 31 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011475-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.17505751
title: snapatac2 test-data

description:  Test data for Galaxy IUC SnapATAC2  tool.  The data is based on published 10x human  PBMC 500 scATAC-seq data. The data was filtered for chromosome 21 only.
DOI: 10.15468/dl.92kvzu
title: Occurrence Download

description: A dataset containing 14487 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Clathrus archeri"
 ]
}

 The dataset includes 14487 records from 207 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0011476-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.30509762
title: Powder X-ray diffraction images at 90 GPa

description: The folder contains 96 X-ray diffraction (XRD) images collected from the silver–nitrogen contact region at a pressure of 90 GPa after laser heating to approximately 2000 K. These images can be used to generate an XRD intensity map using the <b>XDI</b> software. The mapped area spans <b>8 µm in width</b> and <b>12 µm in length</b>, with a <b>step size of 1 µm</b>. The folder also includes a calibration file compatible with both <b>XDI</b> and <b>Dioptas</b> software for accurate data processing and analysis.