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- California Institute of TechnologyUS31 papers
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4 papers · 1 filter
Observations of Dissipation of Slow Magneto-acoustic Waves in a Polar Coronal Hole
G. R. Gupta
We focus on a polar coronal hole region to find any evidence of dissipation of propagating slow magneto-acoustic waves. We obtained time-distance and frequency-distance maps along…
High-efficiency Autonomous Laser Adaptive Optics
Christoph Baranec, Reed Riddle, Nicholas M. Law +10
As new large-scale astronomical surveys greatly increase the number of objects targeted and discoveries made, the requirement for efficient follow-up observations is crucial. Adapt…
Isophotal shapes of early-type galaxies to very faint levels
Laxmikant Chaware, Russell Cannon, Ajit K. Kembhavi +1
We report on a study of the isophotal shapes of early-type galaxies, to very faint levels reaching ~ 0.1% of the sky brightness. The galaxies are from the Large Format Camera (LFC)…
Effect of dark energy sound speed and equation of state on CDM power spectrum
Rizwan Ul Haq Ansari, Sanil Unnikrishnan
We study the influence of equation of state and effective sound speed of the dark energy perturbations on the cold dark matter(CDM) power spectrum.We consider different c…