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65 results for “Imaging spectroscopy”
US Participation in the Solar Orbiter Multi Element Telescope for Imaging and Spectroscopy (METIS) Project
<p> The <em>Multi Element Telescope for Imaging and Spectroscopy, METIS</em>, investigation has been conceived to perform off-limb and near-Sun coronagraphy and is motivated by the aim of addressing the three key scientific questions identified as the focus of the HELEX program. These questions concern: the origin and heating/acceleration of the solar wind streams; the origin, acceleration and transport of the solar energetic particles; and the transient ejection of coronal mass and its evolution in the inner heliosphere (coronal mass ejections, CME&rsquo;s).</p> <p> The investigation aims to provide crucial tests apt to verify the hypotheses and models on the following main issues of solar coronal physics that have been developed primarily during the SOHO era:</p> <p> &bull; Is the slow solar wind originating according to more than one physical process and which is the level of contribution of the possible different sources of slow wind to the heliospheric wind observed &lsquo;in situ&rsquo;?</p> <p> &bull; How does the magnetic field topology control the outflow velocity and composition of the slow and fast solar wind?</p> <p> &bull; Is the magnetic field controlling the emergence of the fast wind at the base of coronal holes?</p> <p> &bull; Do polar plumes and inter-plume regions have a role in channeling the fast wind?</p> <p> &bull; Is ion cyclotron dissipation of fast Alfv&eacute;n waves the primary energy deposition process in the fast wind? &bull; Is the reconnection at the base of coronal holes responsible for the generation of waves and turbulence that energize the fast wind?</p> <p> &bull; Which is the nature of coronal heating in open and closed field regions?</p> <p> &bull; Which is the source of the seed particles of the Solar Energetic Particles (SEPs)?</p> <p> &bull; Which is the role of coronal shocks driven by coronal mass ejections in energizing SEPs? &bull; Which are the mass and magnetic fluxes carried out from the Sun during transient events?</p> <p> &bull; How does the evolution of the coronal magnetic field, inferred from the large-scale evolution of the outer corona, trigger coronal mass ejections?</p> <p> &bull; How does the corona re-adjust after coronal mass ejections on medium-term time scales, ranging between 3 and 10 days (not yet established in the outer corona)?</p> <p> &bull; How do the quiescent streamers evolve on time scales ranging between 3 and 10 days? The crucial tests for addressing and solving these still open issues can be achieved by combining the instrument&rsquo;s versatility with the uniqueness of the Solar Orbiter mission profile, which allows: a close approach to the Sun thus leading to a significant improvement in spatial resolution; quasi co-rotation with the Sun, which allows to nearly freeze for several days both the on-disk inner corona and the outer corona in the plane of the sky and, thus, disentangle the evolution of coronal structures and solar rotational effects on medium-term time scales, an outof- ecliptic view of the Sun. METIS instrument is designed to combine and extend the imaging and spectroscopic capabilities of the SOHO and STEREO coronagraphs and spectrometers in order to exploit at &nbsp;</p>
Emission Line Astronomy - Coronagraphic Tunable Narrow Band Imaging and Integral Field Spectroscopy. Project
We propose to continue our program of emission line astronomy featuring three areas of emphasis: 1) The distribution and nature of high redshift emission line galaxies, using the Lyman alpha and other rest-frame UV lines; and the study of planetary systems in formation in the first 10 Myrs, with the interplay of circumstellar disks and jets; and spectral differencing of transiting planets. 2) We are extending the capability of our Goddard Fabry-Perot Imager by incorporating a Coronagraphic Integral Field Spectrograph (CIFS), and will continue our observations with the improved instrument. We request support for completing the commissioning of the instrument, and for its maintenance and operation. The CIFS, which has been delivered to the Apache Point Observatory's 3.5-m telescope, consists of a custom microlens array and magnifier section, a grating wheel assembly, and a photon-counting electron-multiplying CCD (EMCCD), within the optical train of the Fabry-Perot. The instrument is switchable between Fabry-Perot and IFS modes. It provides observational support to interpret data from the HST, Spitzer, Chandra, Herschel and soon JWST space observatories with capabilities not available on them, and will be used to develop technology for future NASA flight programs such as WFIRST, and NWO, THEIA, ATLAST and other planet-finding missions. In this period we propose to extend the wavelength coverage of the CIFS, by extending the format of the EMCCD.
Near Infrared Spectroscopy Imaging of Change in Tissue Oxygenation to Assess Peripheral Artery Disease
ClinicalTrials.gov study NCT07397494. IPD Sharing: NO. Countries: 0. Publications: 0.
Lookup Tables and Code for "Impact of Scene-Specific Enhancement Spectra on Matched Filter Greenhouse Gas Retrievals from Imaging Spectroscopy"
<p>Lookup Tables and Code for <a href="https://doi.org/10.1016/j.rse.2021.112574">"Impact of Scene-Specific Enhancement Spectra on Matched Filter Greenhouse Gas Retrievals from Imaging Spectroscopy"</a></p><p>The <a href="https://hive.utah.edu/concern/datasets/9w0323039?locale=en">original dataset link</a> is broken, so I uploaded it here for personal use.</p>
An automated approach for fringe frequency estimation and removal in infrared spectroscopy and hyperspectral imaging of biological samples
<p>Infrared microspectroscopy; absorbance spectra of Quercus pollen grains embedded in paraffin. </p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.