Results 41 to 50 of about 1,494,639 (351)

The Diverse Morphologies and Structures of Dwarf Galaxies Hosting Optically Selected Active Massive Black Holes [PDF]

open access: yesAstrophysical Journal, 2021
We present a study of 41 dwarf galaxies hosting active massive black holes (BHs) using Hubble Space Telescope observations. The host galaxies have stellar masses in the range of M ⋆ ∼ 108.5–109.5 M ⊙ and were selected to host active galactic nuclei (AGNs)
S. Kimbrell   +4 more
semanticscholar   +1 more source

ARGONAUTE 2 increases rice susceptibility to rice black‐streaked dwarf virus infection by epigenetically regulating HEXOKINASE 1 expression

open access: yesMolecular plant pathology, 2021
ARGONAUTE (AGO) proteins play crucial roles in plant defence against virus invasion. To date, the role of OsAGO2 in rice antiviral defence remains largely unknown.
Zhaoyun Wang   +12 more
semanticscholar   +1 more source

Extremely efficient mergers of intermediate-mass black hole binaries in nucleated dwarf galaxies [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2021
Gravitational waves emitted by merging black holes between ∼104 and 107 M⊙ will be detectable by the Laser Interferometer Space Antenna (LISA) with signal-to-noise ratios of several hundred out to redshift 20.
F. Khan, K. Holley-Bockelmann
semanticscholar   +1 more source

Rice black-streaked dwarf virus P10 promotes phosphorylation of GAPDH (glyceraldehyde-3-phosphate dehydrogenase) to induce autophagy in Laodelphax striatellus

open access: yesAutophagy, 2021
Macroautophagy/autophagy is an important innate and adaptive immune response that can clear microbial pathogens through guiding their degradation. Virus infection in animals and plants is also known to induce autophagy.
Qi Wang   +9 more
semanticscholar   +1 more source

Nuclear Activity in the Low-metallicity Dwarf Galaxy SDSS J0944-0038 : A Glimpse into the Primordial Universe

open access: yesThe Astrophysical Journal Letters, 2023
Local low-metallicity dwarf galaxies are relics of the early universe and are thought to hold clues into the origins of supermassive black holes. While recent studies are uncovering a growing population of active galactic nuclei (AGNs) in dwarf galaxies,
Michael Reefe   +13 more
doaj   +1 more source

Black hole mergers from dwarf to massive galaxies with the NewHorizon and Horizon-AGN simulations [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
Massive black hole (MBH) coalescences are powerful sources of low-frequency gravitational waves. To study these events in the cosmological context, we need to trace the large-scale structure and cosmic evolution of a statistical population of galaxies,
M. Volonteri   +14 more
semanticscholar   +1 more source

Maximum mass ratio of AM CVn-type binary systems and maximum white dwarf mass in ultra-compact X-ray binaries [PDF]

open access: yesSerbian Astronomical Journal, 2011
AM CVn-type stars and ultra-compact X-ray binaries are extremely interesting semi-detached close binary systems in which the Roche lobe filling component is a white dwarf transferring mass to another white dwarf, neutron star or a black hole ...
Arbutina Bojan
doaj   +1 more source

Genome Editing of Rice eIF4G Loci Confers Partial Resistance to Rice Black-Streaked Dwarf Virus

open access: yesViruses, 2021
Rice black-streaked dwarf disease, caused by rice black-streaked dwarf virus (RBSDV), is a serious constraint in Chinese rice production. Breeding disease-resistant varieties through multigene aggregation is considered an effective way to control ...
Wei Wang   +4 more
semanticscholar   +1 more source

The Black Dwarf

open access: yes, 1993
Spine: Waverley novels. University ed. ; Mode of access: Internet.
Walter Scott, P. D. Garside
  +4 more sources

QPOs in Cataclysmic Variables and in X-ray Binaries [PDF]

open access: yes, 2005
Recent observations, reported by Warner and Woudt, of Dwarf Nova Oscillations (DNOs) exhibiting frequency drift, period doubling, and 1:2:3 harmonic structure, can be understood as disc oscillations that are excited by perturbations at the spin frequency
Abramowicz   +32 more
core   +4 more sources

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