Results 71 to 80 of about 55,540 (200)
Physics Letters B, 2019 We report about the possibility for interacting Kerr sources to exist in two different states – black holes or naked singularities – both states characterized by the same masses and angular momenta.
V.S. Manko, E. Ruiz
doaj +1 more source
The Astrophysical Journal, 2023 The Imaging X-ray Polarimetry Explorer, launched in 2021 December, enables precision measurements of the energy-dependent polarization of the X-ray emission from stellar mass and supermassive black holes.
Andrew Thomas West, Henric Krawczynski
doaj +1 more source
Small but mighty: Impact hazards from iron Near‐Earth Objects
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 224-240, February 2026.Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther +5 more
wiley +1 more source
Astrophysical black holes in screened modified gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2014 31 pages, 10 figures, published ...
Davis, Anne-Christine +3 more
openaire +3 more sources
Physics Letters BThe study of astrophysical phenomena like black hole shadows is an effective approach to properly understand the modified gravity and explore its validity.
Khadije Jafarzade +2 more
doaj +1 more source
Direct Statistical Constraints on the Natal Kick Velocity of a Black Hole in an X-Ray Quiet Binary
The Astrophysical Journal, 2023 In recent years, a handful of “dark” binaries have been discovered with a nonluminous compact object. Astrometry and radial velocity measurements of the bright companion allow us to measure the post-supernova orbital elements of such a binary.
Sharan Banagiri +4 more
doaj +1 more source
Whipped and Mixed Warm Clouds in the Deep Sea
Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract Turbulence is indispensable to redistribute nutrients for all life forms larger than microbial, on land and in the ocean. Yet, the development of deep‐sea turbulence was not studied in three dimensions to date. As a disproportionate laboratory, an array of nearly 3,000 high‐resolution temperature sensors had been installed for three years on ...
Hans van Haren, KM3NeT collaboration
wiley +1 more source
The Astrophysical Journal Letters, 2023 Observations have found black holes spanning 10 orders of magnitude in mass across most of cosmic history. The Kerr black hole solution is, however, provisional as its behavior at infinity is incompatible with an expanding universe.
Duncan Farrah +18 more
doaj +1 more source
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
Revisiting CN− Formation Mechanisms in Electron Collisions with Benzonitrile
ChemPhysChem, Volume 27, Issue 1, January 2026.This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigo Rodrigues +8 more
wiley +1 more source