Results 51 to 60 of about 459 (263)
Recurrent Nova V2487 Oph Had Superflares in 1941 and 1942 with Radiant Energies of 1042.5±1.6 erg
The Astrophysical JournalV2487 Ophiuchi (V2487 Oph) is a recurrent nova with classical nova eruptions in 1900 and 1998, and it is also the most extreme known superflare star. These superflares are roughly hour-long flares with amplitudes and optical energies reaching up to 1.10 ...
Bradley E. Schaefer
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Advanced Science, EarlyView.This study presents a selective thermal transformation of polycarbonate into hybrid carbon materials. The structured carbon enhances electrochemical performance, particularly in lithium‐ion systems. Investigations reveal improved bimetallic ion diffusivity through the hybrid microstructure, contributing to excellent charge kinetics.
Montajar Sarkar +7 more
wiley +1 more source
Ancient Nova Shells of RX Pup Indicate Evolution of Mass Transfer Rate
The Astrophysical Journal LettersRX Pup is a symbiotic binary that experienced a nova outburst in the 1970s. Here we report a discovery of a ∼1300 yr old nova shell around the system and a possible detection of a ∼7000 yr old nova shell. Together with the nova shell ejected in the 1970s,
Krystian Iłkiewicz +4 more
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Classical Novae – Before and After Outburst [PDF]
International Astronomical Union Colloquium, 1988 Classical nova (CN) and dwarf nova (DN) systems have the same binary components (a low-mass main sequence star and a white dwarf) and the same orbital periods. An important question that therefore arises is: are these systems really different ? (and if so, what is the fundamental difference ?) or, are these the same systems, metamorphosing from one ...
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Advanced Science, EarlyView.This study develops a sugar‐armored, self‐assembled pesticide delivery system that enhances foliar adhesion, provides sustained release, effectively disrupts biofilms, and demonstrates superior bactericidal activity for improved disease control.
Jinghan Yang +3 more
wiley +1 more source
V2487 Oph 1998: a post nova in an intermediate polar
EPJ Web of Conferences, 2014 V2487 Oph (Nova Oph 1998) is a classical nova that exploded in 1998. XMM-Newton observations performed between 2 and 9 years after the explosion showed emission related to restablished accretion, and indicative of a magnetic white dwarf.
Hernanz Margarita
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The Astrophysical Journal, 2023 YZ Ret is the first X-ray flash detected classical nova, and is also observed in optical, X-ray, and gamma-ray. We propose a comprehensive model that explains the observational properties.
Izumi Hachisu, Mariko Kato
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Infra-red emission from classical novae [PDF]
International Astronomical Union Colloquium, 1990 During the evolution of a classical nova outburst, there are four times at which a significant infra-red (IR) flux is expected. The first Isothermal Dust Phase has been observed in a number of novae and analyses of this phase give valuable information on the properties of the emitting dust.
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Advanced Science, EarlyView.Reprogramming tumor‐associated macrophages is a promising therapeutic strategy for solid tumors. Here, a nitric oxide (NO)‐activatable NIR‐II fluorescence/photoacoustic nanoinducer (I/E@M2pep) that simultaneously facilitates and visualizes the repolarization of TAMs to an M1‐like phenotype is reported, thereby enhancing anti‐tumor efficacy through M1 ...
Qian Chen +8 more
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Millinovae: A New Class of Transient Supersoft X-Ray Sources without a Classical Nova Eruption
The Astrophysical Journal LettersSome accreting binary systems containing a white dwarf (such as classical novae or persistent supersoft sources) are seen to emit low-energy X-rays with temperatures of ∼ 10 ^6 K and luminosities exceeding 10 ^35 erg s ^−1 .
Przemek Mróz +20 more
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