Results 71 to 80 of about 18,055 (209)

Precision Pointing of IBEX-Lo Observations

, 2011
Post-launch boresight of the IBEX-Lo instrument onboard the Interstellar Boundary Explorer (IBEX) is determined based on IBEX-Lo Star Sensor observations.
D. Heirtzler, D. J. McComas, Duchon, E. Möbius, G. B. Crew, G. Clark, Górski, H. Kucharek, M. Bzowski, M. E. O' Neill, M. Hłond, N. A. Schwadron, S. Fuselier   +12 more
core   +1 more source

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective

Advanced Science, Volume 13, Issue 27, 13 May 2026.
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Jinluo Cheng, Dehong Yang, Weiming Wang, Chang Xu, Zipu Fan, Dong Sun   +5 more
wiley   +1 more source

Roles of 2D halide perovskites in 2D/3D heterojunctions for high‐performance perovskite solar cells

Bulletin of the Korean Chemical Society, Volume 47, Issue 5, Page 551-567, May 2026.
This review establishes a design framework for two‐dimensional (2D)/three‐dimensional (3D) perovskite heterojunctions, redefining the 2D perovskite layer as an active semiconductor component. We classify 2D structures by spacer chemistry and analyze their roles within the heterojunction.
Seungmin Lee, Oui Jin Oh, Dong Hyun Kim, Dong Hun Kang, Jun Hong Noh   +4 more
wiley   +1 more source

Azimuthal Adaptation of the Moon-Based Raṣdu al-Qiblah Method

Al-Hilal
The Raṣdu al-Qiblah of the Moon is a night-time method for determining Qibla direction, but it can only be used once per night and not on specific dates due to natural limitations. This study introduces an innovation by applying azimuth difference values
Muhammad Farid Azmi, 'Alamul Yaqin
doaj   +1 more source

Sunshine Duration in Brazil From Meteosat (1983–2020): Climatology, Variability and Long‐Term Trends

International Journal of Climatology, Volume 46, Issue 6, May 2026.
Using nearly four decades of Meteosat satellite data (1983–2020), this study presents a country‐wide climatology of sunshine duration (SDU) in Brazil. The results reveal marked regional contrasts, dominant modes of variability, and significant long‐term trends, providing new information on the most relevant meteorological systems that influence SDU and
Maria Lívia Lins Mattos Gava, Simone Marilene Sievert da Costa, Íris Paraguay Silva   +2 more
wiley   +1 more source

Primary Beam and Dish Surface Characterization at the Allen Telescope Array by Radio Holography

, 2011
The Allen Telescope Array (ATA) is a cm-wave interferometer in California, comprising 42 antenna elements with 6-m diameter dishes. We characterize the antenna optical accuracy using two-antenna interferometry and radio holography. The distortion of each
Ackermann, R. F., ATA GROUP, Atkinson, Shannon, Backer, D. C., Backus, P. R., Barott, William, Bauermeister, Amber, Blair, Samantha K., Blitz, Leo, Bock, D. C. -J., Bower, Geoffrey C., Bradford, Tucker, Cheng, Calvin, Croft, Steve, Davis, M. M., DeBoer, D. R., Dexter, Matt, Dreher, John, Engargiola, Greg, Fields, Ed, Forster, J. R., Gutierrez-Kraybill, Colby, Harp, G. R., Heiles, Carl, Helfer, Tamara, Jordan, Jane, Jorgensen, Susan, Keating, Garrett, Kilsdonk, Tom, Law, Casey, Lugten, John, MacMahon, D. H. E., McMahon, Peter, Milgrome, Oren, Nadler, Z. J., Pierson, Tom, Randall, Karen, Ross, John, Shostak, Seth, Siemion, Andrew, Smolek, Ken, Tarter, J. C., Thornton, Douglas, Urry, Lynn, Welch, W. J., Werthimer, Dan, Whysong, David, Williams, Peter K. G., Wright, M. C. H.   +48 more
core   +1 more source

Resistivity Structure of the Alabama‐Oklahoma Lineament and Mississippi Embayment: Insights Into Crustal Weakness, Heat Flow, and Seismicity of the Region

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Alabama–Oklahoma Lineament (AOL) is a major crustal boundary that intersects the Mississippi Embayment (ME) and may influence intraplate deformation in the southern United States. We present the first regional magnetotelluric (MT) resistivity models across the AOL–ME system using EarthScope data and two‐dimensional inversion. All southwest–
Kaushik Sarker, Chris Cramer
wiley   +1 more source

DOPPLER STATION FOR ORBITAL TRACKING OF LOW-ORBIT SPACECRAFTS BY THEIR RADIO BEACON SIGNALS

Odessa Astronomical Publications, 2018
A ground station of orbital tracking of low-orbit spacecrafts has been developed and tested in the RI "Mykolaiv Astronomical Observatory". The station uses the Doppler shift of frequencies of signals radiated by spacecraft radio beacons for their orbital
F. Bushuev, M. Kaliuzhnyi, M. Khalaley, V. Kryuchkovskiy, M. Kulichenko, O. Shulga   +5 more
doaj   +1 more source

A close halo of large transparent grains around extreme red giant stars

, 2012
Intermediate-mass stars end their lives by ejecting the bulk of their envelope via a slow dense wind back into the interstellar medium, to form the next generation of stars and planets.
Albert A. Zijlstra, B Gustafsson, Barnaby R. M. Norris, BT Draine, C Jäger, C Loup, E Lagadec, F van Leeuwen, Foteini Lykou, H Olofsson, H-P Gail, HJ Habing, JC Weingartner, LBFM Waters, M Marengo, M Wittkowski, Michael J. Ireland, MJ Ireland, MJ Ireland, MJ Ireland, P Tuthill, P Woitke, Paul Stewart, PC Frisch, Peter G. Tuthill, PG Tuthill, PR Wood, R Lenzen, S Höfner, S Höfner, S Lacour, Sylvestre Lacour, Thomas M. Evans, Timothy R. Bedding   +33 more
core   +3 more sources

Post‐Acquisition Image‐Based Localization for High Resolution Thermal and Visible/Shortwave Infrared Images With Application to the Lunar Trailblazer Mission

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Lunar Trailblazer mission aimed to assess the presence of water on the lunar surface using imaging spectroscopy in visible shortwave infrared (VSWIR) coupled with high‐resolution multispectral imaging in thermal midwave‐infrared (MWIR), captured simultaneously over the same target from orbit around the Moon with two different instruments ...
Kevin D. Gauld, James L. Dickson, Tristam J. Warren, Jihoon Yang, Neil Bowles, Bethany L. Ehlmann   +5 more
wiley   +1 more source