Results 51 to 60 of about 14,518 (263)
Probing Strong Gravitational Fields in X-ray Novae
, 1998 Most X-ray novae (aka soft X-ray transients) contain black hole primaries. In particular, the large mass functions measured for six X-ray novae directly clinch the argument (within general relativity) that they contain black holes.
McClintock, Jeffrey E.
core +1 more source
Do novae have optically thick winds during outburst with large deviations from spherical symmetry? [PDF]
, 2011 The evidence for the presence of optically thick winds, produced by classical novae after optical maximum, has been challenged in recent papers. In addition, signs of orbital phase dependent photometric variations, sometimes seen quite early in the ...
Friedjung, Michael
core +1 more source
Detection of Two-armed Spiral Shocks on the Accretion Disk of the Eclipsing Fast Nova V1494 Aquilae [PDF]
The Astrophysical Journal, 2004 7 pages, 3 figurs, to appear in ...
Hachisu, Izumi +2 more
openaire +2 more sources
Second Timescale Photometry of the Very Fast Nova V1674 Her with Palomar Gattini-IR
Research 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
From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts
Advanced Functional Materials, EarlyView.Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado +6 more
wiley +1 more source
The Astrophysical JournalKT Eri is a classical nova that went into outburst in 2009. Recent photometric analysis in quiescence indicates a relatively longer orbital period of 2.6 days, so that KT Eri could host a very bright accretion disk during the outburst like in the ...
Izumi Hachisu +2 more
doaj +1 more source
How peculiar is the ‘peculiar variable’ DZ Crucis (Nova Cru 2003)? [PDF]
, 2008 The variable star DZ Cru was thought to be a nova when it was discovered in eruption in 2003 August. This explanation was later challenged, however, when the first spectra of the object were reported.
A. Evans +49 more
core +3 more sources
A Light Curve Analysis of Recurrent and Very Fast Novae in Our Galaxy, Magellanic Clouds, and M31 [PDF]
The Astrophysical Journal Supplement Series, 2018 AbstractWe analyzed optical, UV, and X-ray light curves of 14 recurrent and very fast novae in our Galaxy, Magellanic Clouds, and M31, and obtained their distances and white dwarf (WD) masses. Among the 14 novae, we found that eight novae host very massive (≳1.35M☉) WDs and are candidates for Type Ia supernova (SN Ia) progenitors. We confirmed that the
Izumi Hachisu, Mariko Kato
openaire +2 more sources
Advanced Functional Materials, EarlyView.This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo +8 more
wiley +1 more source
The Astrophysical JournalV1674 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