Results 71 to 80 of about 86,009 (222)

NON-THERMAL EMISSION FROM CATACLYSMIC VARIABLES: IMPLICATIONS ON ASTROPARTICLE PHYSICS

open access: yesActa Polytechnica, 2013
We review the lines of evidence that some cataclysmic variables (CVs) are the sources of non-thermal radiation. It was really observed in some dwarf novae in outburst, a novalike CV in the high state, an intermediate polar, polars, and classical novae ...
Vojtech Šimon
doaj   +1 more source

Local Ecological Knowledge Reveals the Distribution of Cryptic Nocturnal Wildlife 局域生态知识揭示隐秘夜行野生动物的分布

open access: yesWildlife Letters, Volume 4, Issue 3, Page 118-130, September 2026.
Many nocturnal animals are difficult to study because they are rarely seen, including nocturnal primates, galagos and pottos, in West Africa. Working with over 600 people in 52 villages in southern Guinea‐Bissau, we found that communities frequently recognized galagos by their red eyeshine and distinctive calls, while pottos were not known.
Chloe Chesney   +6 more
wiley   +1 more source

EVIDENCE OF A BROWN DWARF IN THE ECLIPSING DWARF NOVA Z CHAMAELEONIS

open access: yesThe Astrophysical Journal, 2009
We presented three new CCD observations of light minima of Z Chamaeleonis. All 187 available times of light minimum including 37 photographic data are compiled, and a new orbital period analysis is made by means of the standard O - C technique. The O - C diagram of Z Chamaeleonis presents a cyclical periodic change of similar to 32.57 yr with a high ...
Dai, Zhibin   +2 more
openaire   +3 more sources

The Dwarf Novae of Shortest Period [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 2002
Accepted for publication in Publications of the Astronomical Society of the Pacific; 16 pages, 6 ...
Thorstensen, John R   +3 more
openaire   +3 more sources

Very high energy gamma-ray follow-up observations of novae and dwarf novae with the MAGIC telescopes [PDF]

open access: yes, 2015
In the last few years the Fermi-LAT instrument has detected GeV gamma-ray emission from several novae. Such GeV emission can be interpreted in terms of inverse Compton emission from electrons accelerated in the shock or in terms of emission from hadrons ...
Sitarek J.   +7 more
core   +1 more source

Balancing Growth and Impact: A Conjoint Analysis of Public Preferences for Data Center Policy

open access: yesSocial Science Quarterly, Volume 107, Issue 5, September 2026.
Abstract Objective This study examines public preferences for policy provisions governing the siting, construction, and operation of data centers. Method Drawing directly on Virginia's 2024–2025 legislative portfolio on data centers, we employ a conjoint experimental design to examine public preferences for alternative policy provisions on data centers.
Fengxiu Zhang   +4 more
wiley   +1 more source

Investigation of outburst characteristics in dwarf novae binary star systems

open access: yes, 2009
Dwarf novae are a type of binary star system that consists of a cool red dwarf, as well as a white dwarf with an accretion disk. Occasionally the disk will get significantly brighter for a few days in an event called an outburst.
Klep, James Stuart.
core  

Population synthesis of Novae

open access: yes, 2022
Novae are nuclear explosions that occur on white dwarf stars when they accrete material from a companion star. These explosions are bright enough to be seen across extra-galactic distances and enrich the local gas with a unique mixture of elements.
ALEXANDER JAMES KEMP (14023320)
core   +1 more source

Identification of a Superbright Nova in Our Galaxy: Revisiting the Light-curve Analyses of the Candidate Novae CP Lac, CP Pup, V838 Her, V597 Pup, V5583 Sgr, and V5589 Sgr

open access: yesThe Astrophysical Journal
The two very fast novae in our Galaxy, V1500 Cyg and V1674 Her, have reached the absolute V magnitude of ${M}_{V,{\rm{\max }}}\approx -10.4$ . These brightest novae are identified as superbright novae.
Izumi Hachisu, Mariko Kato
doaj   +1 more source

Outburst Properties of V1504 Cyg and V344 Lyr

open access: yesActa Polytechnica CTU Proceedings, 2015
I begin by reviewing dwarf novae and the disk instability theory, and then present an overview of three ideas for producing superoutbursts in the SU UMa stars − the thermal tidal instability, irradiation-induced secondary mass overflow, and the plain ...
J. K. Cannizzo
doaj   +1 more source

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