On Jan. 26, 2026, the Submillimeter Array (SMA) on Maunakea crossed an important threshold for time-domain astronomy. For the ...
Although both a SEM and a TEM are electron microscopes, their working principles and images are very different. Whereas an SEM uses secondary electrons ejected after bombarding a sample’s surface with ...
Abstract: In this paper, a ±90˚ beam-scanning heterogeneous antenna array (HAA) consisting of asymmetrically-fed magneto-electric (AF-ME) dipole elements is proposed for the first time. In the design ...
Millimeter-Wave Wide-Angle Beam-Scanning Phased Array Based on Full-Wavelength Slot Antenna Elements
Abstract: The phased array with wide scanning range is significant to increase signal coverage for millimeter-wave communication. In this letter, a millimeter-wave wide-angle beam-scanning phased ...
Using the SETI Institute’s Allen Telescope Array, a 42-element radio interferometer at Hat Creek Radio Observatory in Hat Creek, California, astronomers probed 3I/ATLAS for artificial radio ...
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