Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Shikha Raizada"'
Autor:
Carsten Baumann, Antti Kero, Shikha Raizada, Markus Rapp, Michael P. Sulzer, Pekka T. Verronen, Juha Vierinen
Earth’s lower ionosphere is the region where terrestrial weather and space weather come together. Here, between 60 and 100 km altitude, solar radiation governs the diurnal cycle of the ionized species. This altitude range is also the place where na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f749d6eecd2edf1835f057ff7f1742e1
https://hdl.handle.net/10037/27326
https://hdl.handle.net/10037/27326
Autor:
P. K. Manoharan, Phil Perillat, C. J. Salter, Tapasi Ghosh, Shikha Raizada, Ryan S. Lynch, Amber Bonsall-Pisano, B. C. Joshi, Anish Roshi, Christiano Brum, Arun Venkataraman
We present an occultation study of compact radio sources by the plasma tail of interstellar Comet 2I/Borisov (C/2019 Q4) both pre- and near-perihelion using the Arecibo and Green Bank radio telescopes. The interplanetary scintillation (IPS) technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::413766d2477bb2042898e413110f3397
Autor:
M. P. Sulzer, J. Lautenbach, J. Â. A. Smith, Shikha Raizada, Nestor Aponte, John D. Mathews, Phil Perillat
Publikováno v:
Geophysical Research Letters. 47
Autor:
Efmi Franco, Christiano Garnett Marques Brum, Cristina Gonzalez, Shikha Raizada, John D. Mathews
Publikováno v:
Advances in Space Research. 61:1850-1857
Electron concentration (Ne) inferred from Incoherent Scatter Radar (ISR) measurements has been used to determine the influence of solar flux and geomagnetic activity in the ionospheric E-region over Arecibo Observatory (AO). The approach is based on
Publikováno v:
Journal of Geophysical Research: Atmospheres. 121:8038-8054
We present the first simultaneous and common-volume observations of mesospheric K and Na densities and temperature conducted by a K Doppler lidar and a Na lidar at the Arecibo Observatory (18.35°N, 66.75°W), Puerto Rico. Measurements reported here
Publikováno v:
Journal of Geophysical Research: Atmospheres. 118:905-916
[1] We compare the mesospheric Na and Fe layers by using simultaneous and common-volume lidar measurements made at the Arecibo Observatory (18.3°N, 66.75°W), Puerto Rico, in 2003. The temporal variations of the two species are highly correlated at
Autor:
Craig A. Tepley, Qihou Zhou, Shikha Raizada, J. T. Fentzke, Jonathan S. Friedman, Ruben Delgado
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 74:11-23
We present an analysis of two separate and distinct sporadic layer events in the mesosphere and lower thermosphere region above the Arecibo Observatory. These layers were observed in both neutral K and ionic Ca + with lidars, and in electron density
Autor:
Jonathan S. Friedman, Christiano Garnett Marques Brum, J. Lautenbach, Shikha Raizada, F. T. Djuth, John D. Mathews, Caitlin Kerr, Craig A. Tepley
Publikováno v:
Geophysical Research Letters. 42
Autor:
Shikha Raizada, Ilgin Seker, S. Sarkhel, John D. Mathews, Edvier Cabassa, Robert B. Kerr, Nestor Aponte, Craig A. Tepley, Qihou Zhou
Publikováno v:
Earth, Planets and Space. 67
Author details Space and Atmospheric Sciences, Arecibo Observatory, SRI International, Arecibo, PR, USA. Electrical and Computer Engineering Department, Miami University, Oxford, OH, USA. Department of Physics, Indian Institute of Technology Roorkee,