Results 131 to 140 of about 67,060 (301)

C+ 133.5 nm Emission Mechanisms on Mars Revealed by the MAVEN Observations

The Astrophysical Journal
C ^+ emission is generated by electron impact, dissociative ionization, photoionization, and resonant scattering with carbon-related atoms, molecules, and ions in the Martian ionosphere and thermosphere. The contribution of each mechanism to the emission,
Shotaro Sakai, Hiromu Nakagawa, Justin Deighan, Sonal K. Jain, Kei Masunaga, Fuminori Tsuchiya, Naoki Terada, Majd Mayyasi, Nicholas M. Schneider, David L. Mitchell, Christian Mazelle, Mehdi Benna, Robert J. Lillis, Go Murakami, Shannon M. Curry, Kanako Seki   +15 more
doaj   +1 more source

Superconducting tunnel junctions as detectors for ultraviolet,optical, and near infrared astronomy [PDF]

, 1997
T. Peacock, P. Verhoeve, N. Rando, M. A. C. Perryman, B. G. Taylor, P. Jakobsen   +5 more
openalex   +1 more source

Optically Selective Photomask Based on Field‐Induced Periodic Defect Arrays in Ferroelectric Nematics

Advanced Optical Materials, Volume 14, Issue 12, 25 March 2026.
Field‐induced periodic defect patterns in the ferroelectric nematic liquid crystal phase act as optically selective photomasks. Created in the liquid crystal cells with bare electrodes, their periodicity is controlled by the applied frequency and cell gap. When used as photomasks, these patterns modulate transmitted light, whose spatial characteristics
Rajalaxmi Sahoo, Mamatha Nagaraj, Thomas Raistrick, Gordon D. Love, Helen F. Gleeson   +4 more
wiley   +1 more source

The Use of Echelle Gratings in Ultraviolet Space Astronomy [PDF]

, 1971
B. C. Boland, W. M. Burton, B. B. Jones, N. K. Reay   +3 more
openalex   +1 more source

Angularly Stable Terahertz Metasurface With Multi‐Frequency Narrowband Cross‐Polarization Conversion and Broadband Quarter Waveplate Function

Advanced Photonics Research, Volume 7, Issue 3, March 2026.
A compact dual‐functional reflective terahertz (THz) metasurface is experimentally demonstrated. Near‐unity linear‐to‐cross polarization conversion is achieved at four resonance frequencies: 0.65, 0.80, 2.02, and 2.48 THz. Broadband linear‐to‐circular polarization conversion is realized in two bands, 0.86–1.95 THz (77% fractional bandwith, FBW) and 2 ...
Anjali Chaudhary, Mohammadhossein Momtazpour, Lei Xu, Mohsen Rahmani, Sunil Kumar, Ravi Kumar Varshney, Miguel Navarro‐Cía   +6 more
wiley   +1 more source

Wafer‐Scale Room‐Temperature Processing of Lead‐Free Perovskites for Optoelectronic Applications

Advanced Science, Volume 13, Issue 16, 18 March 2026.
We present the first wafer‐scale, room‐temperature synthesis of lead‐free Cs3Sb2X9 (X = Br, I) perovskite films via solvent‐free magnetron sputtering. The resulting high‐performance photodetectors achieve benchmark responsivity, bandwidth, and detectivity, enabling scalable manufacturing for next‐generation optoelectronics.
Rosanna Mastria, Hoi Tung Lam, Ioannis Leontis, Sara Bonomi, Mohammed Ali Saleh Alshehri, Aurora Rizzo, Pietro Galinetto, Maddalena Patrini, Ned Taylor, Steven P. Hepplestone, Monica F. Craciun, Lorenzo Malavasi, Saverio Russo   +12 more
wiley   +1 more source

Excess Ultraviolet Emission at High Galactic Latitudes: A New Horizons View

The Astronomical Journal
We present new observations of the cosmic ultraviolet background (CUVB) at high Galactic latitudes (∣ b ∣ > 40 ^∘ ), made using the Alice UV spectrograph on board the New Horizons spacecraft.
Jayant Murthy, J. Michael Shull, Marc Postman, Joel Wm. Parker, Seth Redfield, Nathaniel Cunningham, G. Randall Gladstone, Jon P. Pineau, Pontus Brandt, Anne J. Verbiscer, Kelsi N. Singer, Harold A. Weaver, Richard C. Henry, S. Alan Stern   +13 more
doaj   +1 more source

Thermal‐ and Pressure‐Sensing of Vibration Dynamics of Tetraphenyl Ethylene in Rotation Restricted Frame

Aggregate, Volume 7, Issue 3, March 2026.
By anchoring aggregation‐induced emission fluorophores into a 3D metal‐organic framework (MOF), molecular‐level precise control over TCPE conformations in rotational systems was achieved. This configuration enables multi‐stimuli responsiveness with distinct mechanisms to temperature and pressure, establishing a novel strategy for constructing dynamic ...
Zi‐You Zhang, Xin‐Ying Wang, Hong‐Liang Dong, Te Ji, Shuai Yan, Zhi‐Qiang Chen, Zhi Su   +6 more
wiley   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Summary of the Joint Discussion: Atomic Data of Importance for Ultraviolet and X-Ray Astronomy [PDF]

, 1971
A. G. Hearn
openalex   +1 more source