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Articles by Physics Dept
The rate of extreme coronal line emitting galaxies in the Sloan Digital Sky Survey and their relation to tidal disruption events
A tidal disruption event (TDE) occurs when a star’s orbit takes it within the tidal radius of a supermassive black hole (SMBH), where the tidal forces of the black hole overcome the star’s internal gravity (Hills 1975). During the star’s ensuing disruption, a portion of the star’s matter falls on to the black hole and a flare of electromagnetic emission is produced.
Redshift-dependent RSD bias from Intrinsic Alignment with DESI Year 1 Spectra
We estimate the redshift-dependent, anisotropic clustering signal in the Dark Energy Spectroscopic Instrument (DESI) Year 1 Survey created by tidal alignments of Luminous Red Galaxies (LRGs) and a selection-induced galaxy orientation bias. To this end, we measured the correlation between LRG shapes and the tidal field with DESI’s Year 1 redshifts, as traced by LRGs and Emission-Line Galaxies (ELGs).
Long-term follow-up observations of extreme coronal line emitting galaxies
We present new spectroscopic and photometric follow-up observations of the known sample of extreme coronal line emitting galaxies (ECLEs) identified in the Sloan Digital Sky Survey (SDSS). With these new data, observations of the ECLE sample now span a period of two decades following their initial SDSS detections.
A striking relationship between dust extinction and radio detection in DESI QSOs: evidence for a dusty blow-out phase in red QSOs
We present the first eight months of data from our secondary target program within the ongoing Dark Energy Spectroscopic Instrument (DESI) survey. Our program uses a mid-infrared and optical colour selection to preferentially target dust-reddened QSOs that would have otherwise been missed by the nominal DESI QSO selection.
Lightning in the Arctic
Research Letter R. H. Holzworth Corresponding Author bobholz@uw.edu orcid.org/0000-0002-8839-618X Earth and Space Sciences, University of Washington, Seattle, WA, USA Correspondence : bobholz@uw.edu Search for more papers by this author This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record.
Near-zone transmission caustic of a hanging water drop
Abstract A water drop hanging from a house siding board after a rain shower is near-normally illuminated by sunlight either shortly after sunrise or before sunset. A focusing caustic consisting of a bright V-shape or U-shape with a small bright elliptical shape immediately above it is frequently seen on the next lower siding board. In addition, there are two broad regions of illumination immediately above the caustic, fanning out to the upper left and upper right.
Observations of amplified roughness from crystal accretion in the sub-ice ocean boundary layer
Ice crystal accretion on the underside of sea ice and ice shelves, a signature of pressure-induced supercooling, has the potential to alter the energy balance in the ocean boundary layer through enhanced hydrodynamic roughness. Here we present estimates of crystal-driven ocean boundary layer roughness in supercooled water beneath sea ice adjacent to the McMurdo/Ross Ice Shelf.
Wheaton College student recognized by Physics Dept. - Your Houston News: Living
WHEATON, Ill. -- Wheaton College student Kathleen Johnson of Friendswood was recently recognized with the Wheaton Engineering Scholars Award. This award was at Wheaton College's Honors Convocation. The Wheaton Engineering Scholars Award is a merit-based award given to an incoming freshman engineering student. The award is renewable for a second year pending good academic performance.
New IR imaging modalities for cancer detection and for intra-cell chemical mapping with a sub-diffraction mid-IR s-SNOM
We present two new modalities for generating chemical maps. Both are mid-IR based and aimed at the biomedical community, but they differ substantially in their technological readiness. The first, so-called “Digistain”, is a technologically mature “locked down” way of acquiring diffraction-limited chemical images of human cancer biopsy tissue. Although it is less flexible than conventional methods of acquiring IR images, this is an intentional, and key, design feature.
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