Results 71 to 80 of about 2,487,342 (212)

Accretion Discs in Cataclysmic Variable Stars [PDF]

International Astronomical Union Colloquium, 1997
AbstractAn overview is given of the spatial and time-dependent properties of the accretion discs in cataclysmic variable stars.
openaire   +1 more source

Advancing Robust Governance in Turbulent Times: The Role of Multi‐Level Governance, Hybrid Governance, and Negotiated Societal Intelligence

Public Administration, Volume 104, Issue 2, Page 251-265, June 2026.
ABSTRACT New research argues that robust governance based on flexible adaptation and proactive innovation is needed in order to uphold core public functions, purposes, and values in times of societal turbulence. However, we have limited knowledge of the conditions for enhancing robust governance.
Jacob Torfing, Tina Bentzen, Tiziana Caponio, Susana Coroado, Scott Douglas, Steven Nõmmik, Tiina Randma‐Liiv, Chiara Russo, Eva Sørensen, Koen Verhoest   +9 more
wiley   +1 more source

XMM-Newton observations of AM CVn binaries [PDF]

, 2005
We present the results of XMM-Newton observations of four AM CVn systems – AM CVn, CR Boo, HP Lib and GP Com. Their light curves show very different characteristics. The X-ray light curves show no coherent pulsations, suggesting the accreting white dwarfs
P. Hakala, Steeghs, D., G. Ramsay, T. Marsh, Ramsay, G., M. Cropper, G. Nelemans, Cropper, M., Hakala, P., D. Steeghs, Nelemans, G., Cropper, Mark, Marsh, T., Nelemans, G.A., Marsh, T. R.   +14 more
core   +2 more sources

ASASSN-16dv: Superhumps in a Long-period X-Ray-luminous Dwarf Nova

The Astronomical Journal
Combining a long-term light curve, four-color rapid photometry, and spectroscopic and X-ray observations with a 27-day time base TESS light curve, we present the first dedicated study of ASASSN-16dv, detected as a transient in the All-Sky Automated ...
Albert Bruch, Raimundo Lopes de Oliveira, Amanda Silva de Araujo, Romualdo Eleutério, Angela Cristina Krabbe, Koji Mukai   +5 more
doaj   +1 more source

The origin of the infrared light of cataclysmic variable stars⋆ [PDF]

Monthly Notices of the Royal Astronomical Society, 1985
Origine de la lumiere IR entre 1 et 2 μm pour un echantillon de 28 binaires cataclysmiques, pour la plupart des novae naines en repos. La lumiere IR provient de la naine rouge qui fournit de la matiere a son compagnon naine blanche et au disque d'accretion autour de la naine ...
G. Berriman, P. Szkody, R. W. Capps
openaire   +1 more source

Teaching New Religious Movements Historically: Distance, Empathy, and Cults in the Classroom

Teaching Theology &Religion, Volume 29, Issue 1, Page 46-54, June 2026.
ABSTRACT Resistance to understanding the beliefs of modern New Religious Movements (NRMs) is well‐known to those who teach in the area. This paper builds on Eugene Gallagher's repurposing of “methodological belief” for college classes on NRMs by suggesting that scholars and teachers in the field of religious studies engage methods and content drawn ...
Douglas FitzHenry Jones
wiley   +1 more source

Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables

The Astronomical Journal
Spectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties.
Paula Szkody, Jan van Roestel, Paul A. Mason, Colin Littlefield, R. Michael Rich, Eric C. Bellm, Filipp D. Romanov, Brian F. Healy, Theophile Jegou du Laz, Russ R. Laher, Ben Rusholme   +10 more
doaj   +1 more source

The Secondary Stars of Cataclysmic Variables

, 2011
I review what we know about the donor stars in cataclysmic variables (CVs), focusing particularly on the close link between these binary components and the overall secular evolution of CVs. I begin with a brief overview of the "standard model" of CV evolution and explain why the key observables this model is designed to explain - the period gap and the
openaire   +2 more sources

The Perils of Climate Catastrophism: A Call to Situate Crisis and Change

WIREs Climate Change, Volume 17, Issue 3, May/June 2026.
Original image taken by John Englart and published on Flickr (https://flickr.com/photos/81043308@N00/33366528414) and then subsequently on Wikipedia (https://commons.wikimedia.org/wiki/File:Climate_emergency_‐_Melbourne_‐MarchforScience_on_‐Earthday_(33366528414).jpg) under the Creative Commons Attribution‐Share Alike 2.0 Generic license.
Karen Bickerstaff
wiley   +1 more source

TESS Light Curves of Cataclysmic Variables. V. Improved or Corrected Orbital Periods of 53 Systems

The Astronomical Journal
The long and continuous high-time-resolution coverage of many stars by the Kepler and TESS space missions permit to explore periodic phenomena with a much higher precision than is possible with terrestrial observations.
Albert Bruch
doaj   +1 more source