Results 51 to 60 of about 1,532,155 (277)

Optical Detection of the X-Ray Flash in the Very Fast Nova V1674 Her: Optical Contribution of the Irradiated Accretion Disk

open access: yesThe Astrophysical Journal
V1674 Her is one of the fastest and brightest novae, characterized by dense optical photometry in the premaximum phase—a rise from g = 17 to 7 mag, over one-quarter of a day.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

Second Timescale Photometry of the Very Fast Nova V1674 Her with Palomar Gattini-IR

open access: yesResearch Notes of the AAS, 2021
Abstract We report second-timescale infrared photometry of the nova V1674 Her using Palomar Gattini-IR (PGIR). These observations constitute the first infrared and highest temporal resolution data (resolution of ≈0.84 s) of the nova reported to date.
Kylie Y. Hansen   +17 more
openaire   +3 more sources

Defect‐Driven Charge Separation in Ba‐Doped SrTiO3: Correlating Photoelectrochemical Performance With Dye‐Selective Photocatalysis

open access: yesAdvanced Materials Interfaces, EarlyView.
Ba‐doped SrTiO3 perovskites establish a direct correlation between photoelectrochemical activity and photocatalytic performance. Optimized Ba0.5Sr0.5TiO3 exhibits enhanced charge separation, photocurrent generation, and visible‐light‐driven dye degradation through defect‐induced oxygen vacancies and lattice distortion.
Sagar A. Nikam   +6 more
wiley   +1 more source

The Unexplored Dusty Nova LMCN 2009-05a in the Large Magellanic Cloud

open access: yesThe Astronomical Journal
We present a detailed spectrophotometric study of nova LMCN 2009-05a, located in the Large Magellanic Cloud (LMC). Photometric observations reveal a dust dip in the optical light curve, classifying it as a D-class nova.
Mohit Singh Bisht   +6 more
doaj   +1 more source

Rms–flux relation and fast optical variability simulations of the nova-like system MV Lyr [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
The stochastic variability (flickering) of the nova-like system (subclass of cataclysmic variable) MV Lyr yields a complicated power density spectrum with four break frequencies. Scaringi et al. (2012) analysed high-cadence Kepler data of MV Lyr, taken almost continuously over 600 days, giving the unique opportunity to study multicomponent Power ...
Dobrotka, A.   +2 more
openaire   +2 more sources

Hierarchically Wrinkled Silver Ink as a Platform for Fully Integrated Stretchable Electronic Systems

open access: yesAdvanced Materials Technologies, EarlyView.
Silver Hierarchical Responsive ink (SHRink), a universal approach for the fabrication of highly stretchable interconnects, wirings, and skin‐interfaced electrodes, is realized through low‐cost, scalable spray‐printing and transfer‐printing. The SHRink demonstrates high electrical conductivity (1.2E04 S cm−1) and large stretchability (235% max fracture ...
Junye Li   +11 more
wiley   +1 more source

Resolving different sources of fast X-ray variability of the dwarf nova RU Peg in quiescence★ [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
accepted for publication in MNRAS, 12 pages, 8 figures, 1 ...
Dobrotka, A.   +2 more
openaire   +2 more sources

Synergistic Interfacial Regulation by Nano‐TiO2 and Carboxylated Cellulose Nanofibers for Multiscale Surface Stabilization of Cementitious Composites

open access: yesAdvanced Materials Technologies, EarlyView.
Nano‐TiO2 and carboxylated cellulose nanofibers jointly regulate hydration‐product distribution in cementitious composites. Improved microstructural continuity and refined pore structure accompany enhanced strength and surface stability without a substantial increase in overall hydration.
Kailun Chen   +8 more
wiley   +1 more source

On a century of extragalactic novae and the rise of the rapid recurrent novae [PDF]

open access: yes
Novae are the observable outcome of a transient thermonuclear runaway on the surface of an accreting white dwarf in a close binary system. Their high peak luminosity renders them visible in galaxies out beyond the distance of the Virgo Cluster.
Henze, M, Darnley, MJ
core   +1 more source

Formation of an Optically Thick Shocked Shell in the Very Fast Nova V1674 Herculis: The Origin of Superbrightness

open access: yesThe Astrophysical Journal
V1674 Her is the fastest ( t _2 ∼ 1 day) classical nova in our Galaxy, and its absolute V peak of ${M}_{V,{\rm{\max }}}\sim -10.2$ is 1 mag brighter than typical very fast novae. Such a nova is sometimes called a superbright nova.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

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