Results 71 to 80 of about 378,163 (279)

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

, 1996
We discuss the capabilities of superconducting tunnel junctions as detectors for ultraviolet, optical, and near-infrared astronomy. Such junctions have recently been shown to allow the detection of individual optical and ultraviolet photons with an ...
M. A.C. Perryman, P. Verhoeve, Rando, N, T. Peacock, Verhoeve, P, Jakobsen, P, B. G. Taylor, Perryman, M A C, P. Jakobsen, Peacock, T, N. Rando, Taylor, B G   +11 more
core   +1 more source

Temperature‐Tunable Cholesteric Liquid Crystal Optical Combiners for Extended Reality Applications

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Recent advancements in extended reality highlight their potential to enhance traditional displays like liquid crystal displays and organic light‐emitting diode screens. This article introduces an innovative cholesteric liquid crystal‐based optical combiner for head‐mounted displays, enabling seamless transitions between augmented reality, virtual ...
Yuanjie Xia, Haobo Li, Marija Vaskeviciute, Daniele Faccio, Affar S. Karimullah, Hadi Heidari, Rami Ghannam   +6 more
wiley   +1 more source

The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra

The Astrophysical Journal Supplement Series
The Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos, Marcos P. Diaz, Larissa Takeda   +2 more
doaj   +1 more source

Astronomy Education Research Down Under [PDF]

, 2005
A review of research conducted in Australasia into students' concept development in astronomy identifies a number of learning difficulties pertinent to astronomy, such as the lack of prior knowledge, intuitive or naive beliefs, juxtaposition and frames ...
Ginns, Ian S., Broadfoot, John, Ginns, Ian, Broadfoot, John M.   +3 more
core  

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

A Data-driven Approach for Mitigating Dark Current Noise and Bad Pixels in Complementary Metal Oxide Semiconductor Cameras for Space-based Telescopes

The Astronomical Journal
In recent years, there has been a gradual increase in the performance of complementary metal oxide semiconductor (CMOS) cameras. These cameras have gained popularity as a viable alternative to charge-coupled device cameras in a wide range of applications.
Peng Jia, Chao Lv, Yushan Li, Yongyang Sun, Shu Niu, Zhuoxiao Wang   +5 more
doaj   +1 more source

Neutrino Oscillation in a Minimal Length Spacetime

Astronomische Nachrichten, EarlyView.
ABSTRACT We investigate how neutrino oscillations are modified in a non‐commutative spacetime characterized by a minimal length scale, described by the Quesne–Tkachuk algebra. By incorporating the algebra's deformation parameter β$$ \beta $$ into the effective neutrino mass, we derive the two‐flavor oscillation probability in this non‐commutative ...
Luísa Nadal‐Camargo, Thiago Oliveira Ferreira, Dimiter Hadjimichef, César A. Z. Vasconcellos   +3 more
wiley   +1 more source

Exploring the Synthesis of Metalloporphyrin Equipped Pd12L24 Supramolecular Spheres

Chemistry – A European Journal, EarlyView.
We expand the scope of Pd12L24 nanospheres equipped with porphyrins. Focusing on the porphyrin metallation state, synthetic strategies for porphyrin building block (BB)compounds are developed. The compounds are evaluated against nanosphere self‐assembly conditions.
Tom Keijer, Eduard O. Bobylev, Robert L.C. Voeten, Felix J. de Zwart, Simon Mathew, Vladimir Grigorescu, Charusheela Ramanan, Anouk M. Rijs, Joost N.H. Reek   +8 more
wiley   +1 more source

Highlighting the history of French radio astronomy. 7. The genesis of the Institute of Radioastronomy at Millimeter wavelengths (IRAM) [PDF]

, 2011
Radio astronomy in France and in Germany started around 1950. France was then building interferometers and Germany large single dishes, so it was not unexpected that their first projects involving millimetre radio astronomy were respectively with an ...
Gómez-González, Jesús, Lequeux, James, Gómez González, Jesús, Encrenaz, Pierre J., Orchiston, Wayne, Encrenaz, Pierre   +5 more
core   +1 more source

Astronomy is a collaborative effort (The Real Astronomy)

, 2009
Professional Astronomers talk about the importance of collaborations for astronomy. Many astronomy projects are now so large in scope that they are often conducted in large teams.
Centre for Astrophysics and Supercomputing
core   +1 more source