Results 41 to 50 of about 6,310 (180)
A DISPLACED SUPERMASSIVE BLACK HOLE IN M87 [PDF]
The Astrophysical Journal, 2010 ApJ Letters ...
Batcheldor, D +4 more
openaire +3 more sources
Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade
Radio Science, Volume 60, Issue 7, July 2025.Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park +13 more
wiley +1 more source
, 2006 The braneworld paradigm provides an interesting framework within which to explore the possibility that our Universe lives in a fundamentally higher dimensional space- time.
Whisker, Richard
core
Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley +1 more source
DO CIRCUMNUCLEAR DENSE GAS DISKS DRIVE MASS ACCRETION ONTO SUPERMASSIVE BLACK HOLES
, 2016 We present a positive correlation between the mass of dense molecular gas (Mdense) of ~ 100 pc scale circumnuclear disks (CNDs) and the black hole mass accretion rate (M_ BH) in total 10 Seyfert galaxies, based on data compiled from the literature and an
Kawakatu Nozomu +2 more
core +1 more source
Stochastic Quantum Mechanics in Curved Spaces: Application to Schwarzschild Black Holes
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT In this work, we start from the hypothesis that the universe lives in a Gravitational Wave Background (GWB). From this hypothesis, it follows that space–time is not locally flat because we have to take into account the fluctuations of the GWB in space–time. This implies that sufficiently small particles will feel these oscillations, preventing
Juan S. Jerez‐Rodriguez +1 more
wiley +1 more source
The formation of satellite galaxies and their associated black holes [PDF]
, 2006 Not ...
Libeskind, Noam Isaac
core
Interplay of Magnetic Reconnection and Current Sheet Kink Instability in the Earth's Magnetotail
Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.Abstract Magnetic reconnection and current sheet kink instability often develop concurrently in current sheets, yet their dynamic interplay remains unclear. We investigate their interaction in the magnetotail of a 3D global magnetospheric hybrid‐Vlasov simulation. We identify the instability growth and saturation phase and estimate the evolution of the
G. Cozzani +12 more
wiley +1 more source
The formation of supermassive black holes and the evolution of supermassive stars
Classical and Quantum Gravity, 2001 The existence of supermassive black holes is supported by a growing body of observations. Supermassive black holes and their formation events are likely candidates for detection by proposed long-wavelength, space-based gravitational wave interferometers like LISA.
New, Kimberly C. B., Shapiro, Stuart L.
openaire +3 more sources
Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers
Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto +9 more
wiley +1 more source