Results 31 to 40 of about 364,226 (255)

The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters

The Astrophysical Journal Supplement Series, 2022
The origins of Lyman continuum (LyC) photons responsible for the reionization of the universe are as of yet unknown and highly contested. Detecting LyC photons from the Epoch of Reionization is not possible due to absorption by the intergalactic medium ...
Sophia R. Flury, Anne E. Jaskot, Harry C. Ferguson, Gábor Worseck, Kirill Makan, John Chisholm, Alberto Saldana-Lopez, Daniel Schaerer, Stephan McCandliss, Bingjie Wang, N. M. Ford, Timothy Heckman, Zhiyuan Ji, Mauro Giavalisco, Ricardo Amorin, Hakim Atek, Jeremy Blaizot, Sanchayeeta Borthakur, Cody Carr, Marco Castellano, Stefano Cristiani, Stephane De Barros, Mark Dickinson, Steven L. Finkelstein, Brian Fleming, Fabio Fontanot, Thibault Garel, Andrea Grazian, Matthew Hayes, Alaina Henry, Valentin Mauerhofer, Genoveva Micheva, M. S. Oey, Goran Ostlin, Casey Papovich, Laura Pentericci, Swara Ravindranath, Joakim Rosdahl, Michael Rutkowski, Paola Santini, Claudia Scarlata, Harry Teplitz, Trinh Thuan, Maxime Trebitsch, Eros Vanzella, Anne Verhamme, Xinfeng Xu   +46 more
doaj   +1 more source

Specific Position of Halogen in Crystalline TADF Scintillators Enables Efficient Triplet Harvesting Through Vibrational Modulation of Spin–Orbit Coupling

Advanced Materials, EarlyView.
Specific ortho‐halogenation transforms crystalline TADF emitters into efficient organic scintillators. Fluorine reduces the effective singlet–triplet separation, while chlorine combines near‐degenerate excited states with vibrational modulation of spin–orbit coupling.
Illia E. Serdiuk, Michał Mońka, Artur Sikorski, Konrad J. Drozdowski, Mohanad S. Eid, Krzysztof Wisniewski, Damian Trzybiński, Marcin E. Witkowski, Winicjusz Drozdowski   +8 more
wiley   +1 more source

Escaping Ionizing Photons from Massive Spiral Galaxies at z ∼ 1

The Astrophysical Journal
We report the detection of Lyman continuum (LyC) photons from three massive ( M _* > 10 ^10 M _⊙ ) spiral galaxies at a redshift of nearly 1 in the AstroSat UV Deep Field South.
Soumil Maulick, Kanak Saha
doaj   +1 more source

Hot Stars, Young Stellar Populations and Dust with Swift/UVOT

Universe
In this review, we highlight the contributions made by the Swift/UVOT instrument to the understanding of the ultraviolet (UV) attenuation and extinction properties of interstellar dust and provide insight into hot stars and young stellar populations. The
Michael H. Siegel, Caryl Gronwall
doaj   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Astronomy & Astrophysics (CAUCASUS)-VOLUME 4

, 2018
The IV volume of Journal “Astronomy & Astrophysics (Caucasus)” was dedicated to the 110th Anniversary of Academician Victor Hambardzumyan. AcademicianVictor Hambardzumyan President of International Union of Astronomy (in 1961 – 1964 and 1966 – 72 ...
(CAUCASUS), Astronomy & Astrophysics
core   +1 more source

Ultraviolet and Gravitational Wave Signatures of Magnetar Formation

The Astrophysical Journal
We investigate the impact of gravitational wave (GW) emission by a newly born magnetar onto its electromagnetic (EM) counterparts in the Ultraviolet Transient Astronomy Satellite (ULTRASAT) band.
Simone Dall’Osso, Dafne Guetta
doaj   +1 more source

Acetylene Functionalization of Multiple‐Resonant Materials Enabling Strong Two‐Photon Absorption and Delayed Luminescence With Highly Efficient Exciplex‐Sensitized Electroluminescence

Advanced Optical Materials, EarlyView.
Multiple‐resonance thermally activated delayed fluorescent (MR‐TADF) material absorbs two near‐infrared 760 nm photons with cross‐section up to 156 GM, emit 26 nm narrowband green light at 491 nm with unity luminescence quantum yield and electroluminescence efficiency up to 25.2% in organic light‐emitting diode.
Ikechukwu D. Nwosu, Debasish Barman, Samuel L. Powley, Tárcius N. Ramos, Nguyen Le Phuoc, Tomi Leinonen, Charles T. Smith, Mireille Blanchard‐Desce, Jonathan Daniel, Mikko Linnolahti, Yoann Olivier, Chihaya Adachi, Alexander S. Romanov   +12 more
wiley   +1 more source

The AstroSat UV Deep Field South. II. A Diverse Set of Lyman-continuum Leakers at z ∼ 1

The Astrophysical Journal
We report the detection of five newly identified Lyman-continuum (LyC) leaker candidates at redshifts 0.99–1.42 in the AstroSat UV Deep Field South F154W image.
Soumil Maulick, Kanak Saha, Michael J. Rutkowski   +2 more
doaj   +1 more source

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

Advanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan, Maksim L. Sargsyan, Davit A. Karakhanyan, Ani P. Khachatryan, Maria A. Levonyan, Dmitrii Litvinov, Maciej Koperski, Artsruni V. Margaryan, Makars Šiškins, Konstantin S. Novoselov, Davit A. Ghazaryan   +10 more
wiley   +1 more source