Results 81 to 90 of about 34,923 (243)

LAMOST J2043+3413—a Fast Disk Precession SW Sextans Candidate in Period Gap

The Astronomical Journal, 2023
We present follow-up photometric observations and time-series analysis of a nova-like, SW Sextans-type, cataclysmic variable (CV) candidate, LAMOST J204305.95+341340.6 (hereafter J2043+3413), with a Gaia G -band magnitude of 15.30 and a distance of 990 ...
Xin Li, Xiaofeng Wang, Jiren Liu, Jincheng Guo, Ziping Zhang, Yongkang Sun, Xuan Song, Cheng Liu   +7 more
doaj   +1 more source

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

Public Administration, EarlyView.
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

The AM Her System RX J1844.2+4454/2MASS J18441496+4454091/ZTF18aapobha

The Astrophysical Journal
Based on ROSAT All-Sky Survey data and optical follow-up observations, we report observations of the cataclysmic variable RX J1844.2+4454/2MASS J18441496+4454091/ZTF18aapobha.
J. Greiner, R. Schwarz, G. H. Tovmassian, M. Orio   +3 more
doaj   +1 more source

Cataclysmic Variables as Binary Stars: Then and Now [PDF]

International Astronomical Union Colloquium, 1990
AbstractA brief history is given of the clues that led to the establishment, in the period c. 1950 to 1965, of a universal binary model for novae and related cataclysmic variables. The observational facts, established early in this period by A. H. Joy and R. F. Sanford (selected binary orbits), J. L. Greenstein (spectroscopy) and M. Walker (photometry)
openaire   +1 more source

The Lower Main Sequence and the Orbital Period Distribution of Cataclysmic Variable Stars [PDF]

, 1997
The color-magnitude diagram of the lower main sequence, as measured from a volume-limited sample of nearby stars, shows an abrupt downward jump between MV ~ 12 and 13.
J. Clemens, I. Reid, J. Gizis, M. O'Brien   +3 more
semanticscholar   +1 more source

TESS Light Curves of Cataclysmic Variables. VI. Intermediate Polars

The Astrophysical Journal Supplement Series
The long and (almost) continuous high-cadence light curves provided by the TESS space mission are ideally suited to study in detail brightness variations in stellar sources on the broad range of timescales between minutes and months.
Albert Bruch
doaj   +1 more source

Constraining the White-dwarf Mass and Magnetic Field Strength of a New Intermediate Polar through X-Ray Observations

The Astrophysical Journal, 2023
We report timing and broadband spectral analysis of a Galactic X-ray source, CXOGBS J174517.0−321356 (J1745), with a 614 s periodicity. Chandra discovered the source in the direction of the Galactic Bulge.
Benjamin Vermette, Ciro Salcedo, Kaya Mori, Julian Gerber, Kyung Duk Yoon, Gabriel Bridges, Charles J. Hailey, Frank Haberl, Jaesub Hong, Jonathan Grindlay, Gabriele Ponti, Gavin Ramsay   +11 more
doaj   +1 more source

Exploring Tolerance Towards Corruption in the European Union Through Experienced Corruption, Perceived Corruption and Institutional Trust

Business Ethics, the Environment &Responsibility, Volume 35, Issue 2, Page 1279-1304, April 2026.
ABSTRACT Corruption is a major problem that undermines the foundations of democracy and reduces citizens' trust in institutions. However, even in the world's most advanced countries, citizens accept certain levels of corruption. This tolerance towards corruption (TC) reduces the impact of anti‐corruption actions and ends up giving a patina of normality
Begoña Alvarez‐García, Dolores Lagoa‐Varela, Susana Iglesias‐Antelo, Jorge Gallud Cano   +3 more
wiley   +1 more source

Photometric Analysis of the Cataclysmic Variable Star LT Eri

The Astronomical Journal
LT Eri is a long-period eclipsing cataclysmic variable star (CV). This study investigates its outbursts, negative superhumps (NSHs), tilted-disk precession, eclipse-depth variations, and observed minus calculated ( O – C ) behavior, using photometric ...
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu, Qin-Mei Li, Fu-Xing Li, Min-Yu Li, Ping Li   +6 more
doaj   +1 more source

A Broadband X-Ray Study of the Dwarf Nova SS Cyg during Quiescence and Outburst

The Astrophysical Journal, 2023
We present a broadband X-ray study (∼0.3–50 keV) of the dwarf nova SS Cyg highlighting the changes in the accretion during two phases, the quiescence and the outburst states.
Anirban Dutta, Vikram Rana, Koji Mukai, Raimundo Lopes de Oliveira   +3 more
doaj   +1 more source