Results 81 to 90 of about 14,518 (263)

A Very-High-Energy Gamma-Ray View of the Transient Sky

Universe
The development of the latest generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) over recent decades has led to the discovery of new extreme astrophysical phenomena in the very-high-energy (VHE, E > 100 GeV) gamma-ray regime.
Alessandro Carosi, Alicia López-Oramas
doaj   +1 more source

Record Performance in Vertically Stacked, Solution‐Processed ZTO Schottky Diodes

Advanced Materials Technologies, EarlyView.
Schottky diodes based on solution processed sustainable zinc—tin–oxide thin films present an eco‐friendly and versatile alternative to conventional CMOS based technologies. Beyond state‐of‐the‐art performance for vertically stacked solution‐based oxide diodes was achieved, including rectification ratios exceeding nine orders of magnitude, and intrinsic
Carlos Silva, Asal Kiazadeh, Raquel Azevedo Martins, António Dias, Jorge Martins, Luís Mendes, João Vaz, Rodrigo Martins, Elvira Fortunato, Emanuel Carlos, Jonas Deuermeier   +10 more
wiley   +1 more source

A Multiwavelength Light-curve Analysis of the Classical Nova V392 Per: Optical Contribution from an Irradiated Accretion Disk during the Nova Wind Phase

The Astrophysical Journal
The classical nova V392 Per 2018 is characterized by a very fast optical decline, a long binary orbital period of 3.23 days, detection of GeV gamma rays, and almost identical decay trends of the B , V , and I _C light curves.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

The hybrid Nova Vul 2024 (=V615 Vul)

Astronomy & Astrophysics
Context. Among galactic novae, many remain poorly characterized due to heterogeneous data, observational challenges, or heavy reddening along the Galactic plane.
Valisa P., Munari U., Albanese I.
doaj   +1 more source

Elemental Abundances in the Ejecta of Old Classical Novae from Late-Epoch Spitzer Spectra

, 2012
We present Spitzer Space Telescope mid-infrared IRS spectra, supplemented by ground-based optical observations, of the classical novae V1974 Cyg, V382 Vel, and V1494 Aql more than 11, 8, and 4 years after outburst respectively.
Andreä, Aneurin Evans, Anupama, Augusto, Ayani, Baruffolo, Bevington, Burwitz, Charles E. Woodward, Chochol, Chochol, Collins, Collins, Del Pozzo, della Valle, Dinerstein, Dinesh P. Shenoy, Downes, Drake, Duerbeck, Fujii, Gaposchkin, Garnavich, Gehrz, Gehrz, Gehrz, Gehrz, Greg J. Schwarz, Hachisu, Hachisu, Helton, Helton, Honda, Houck, Hummer, Joachim Krautter, Kiss, Krautter, L. Andrew Helton, Lee, Lennon, Liller, Lyke, Lyke, Mazuk, McLaughlin, Milbourn, Morisset, Moro, Ness, O'Brien, Orio, Orio, Osterbrock, Paresce, Paresce, Paresce, Pereira, R. Mark Wagner, Robert D. Gehrz, Rohrbach, Rosino, Salama, Saraph, Schmeer, Schwarz, Schwarz, Schwarz, Schwarz, Schwarz, Shore, Shore, Slavin, Smits, Steiner, Stickland, Strope, Sumner Starrfield, Tayal, Tylenda, Vanlandingham, Vanlandingham, Werner, William D. Vacca, Woodward, Woodward, Yamashita, Zhang   +87 more
core   +1 more source

Cap‐oPMN: Oral Inflammatory Load Quantification Using Capillary Microfluidics and Automated Image Processing

Advanced Materials Technologies, EarlyView.
ABSTRACT Quantifying oral polymorphonuclear neutrophils (oPMNs) is a clinically validated approach for assessing periodontal inflammation. However, current methods, such as manual hemocytometry and flow cytometry, are time‐consuming (>3 h), require invasive sampling, and depend on staining and complex instrumentation, making them unsuitable for point ...
Mohsen Hassani, Azam Zare, Fatemeh Soheili, S. M. Mahdi H. Daneshvar, Mahdi Amrollahi Biouki, Yasaman Tahernezhad, Chunxiang Sun, Michael Glogauer, Ebrahim Ghafar‐Zadeh, Amir Sanati‐Nezhad   +9 more
wiley   +1 more source

Prospects for Observing Astrophysical Transients with Gigaelectronvolt Neutrinos

The Astrophysical Journal
Although Cherenkov detectors of high-energy neutrinos in ice and water are often optimized to detect teraelectronvolt–petaelectronvolt neutrinos, they may also be sensitive to transient neutrino sources in the 1–100 GeV energy range.
Angelina Sherman, Jessie Thwaites, K. Fang, Justin Vandenbroucke, Brian D. Metzger   +4 more
doaj   +1 more source

X-ray emission from optical novae in M 31

, 2009
The first supersoft source (SSS) identification with an optical nova in M 31 was based on ROSAT observations. Twenty additional X-ray counterparts (mostly identified as SSS by their hardness ratios) were detected using archival ROSAT, XMM-Newton and ...
Darnley, Della Valle, Della Valle, Di Stefano, Drake, Greiner, Haberl, Haberl, Hachisu, Hachisu, Henze, Henze, Henze, José, Kaaret, Kong, Lee, MacDonald, Nedialkov, Ness, Orio, Osborne, Osborne, Pietsch, Pietsch, Pietsch, Pietsch, Riffeser, Sala, Sala, Shafter, Shafter, Shafter, Smirnova, Smirnova, Supper, Supper, Trudolyubov, Tuchman, Voss, Yaron, Ögelman   +41 more
core   +1 more source

Controlling Film Formation in Inkjet‐printed MAPbBr3 Through Graphene Incorporation for Enhanced Photodetection

Advanced Materials Technologies, EarlyView.
This work highlights the impact of incorporating graphene nanoflakes into precursor inks of MAPbBr3 for inkjet‐printed optoelectronic device applications. A substantial modification of the crystallization dynamics is reported despite miniscule concentrations.
Kenneth Lobo, Javier Bartolomé, María Vila, Giovanni Vescio, Raúl I. Sánchez‐Alarcón, Junaid Khan, Júlia Marí Guaita, Francisco Palacio Bonet, Juan P. Martínez‐Pastor, Sergi Hernández, Blas Garrido, Carmen Coya, Albert Cirera   +12 more
wiley   +1 more source

Challenging Classical Paradigms: Recurrent Nova M31N 2017-01e, a BeWD System in M31?

The Astrophysical Journal
M31N 2017-01e is the second-fastest recurrent nova known, with a recurrence period of 2.5 yr in the Andromeda galaxy (M31). This system exhibits a unique combination of properties: a low outburst amplitude (∼3 mag), starkly contrasting with known ...
Shatakshi Chamoli, Judhajeet Basu, Sudhanshu Barway, G.C. Anupama, Vishwajeet Swain, Varun Bhalerao   +5 more
doaj   +1 more source