Results 91 to 100 of about 3,221 (240)

A Luminous X-Ray Active Galactic Nucleus in the Dwarf–Dwarf Galaxy Merger RGG 66

The Astrophysical Journal
We present the discovery of a luminous X-ray active galactic nucleus (AGN) in the dwarf galaxy merger RGG 66. The black hole is predicted to have a mass of M _BH ∼ 10 ^5.4 M _⊙ and to be radiating close to its Eddington limit ( L _bol / L _Edd ∼ 0.75 ...
Seth J. Kimbrell, Amy E. Reines
doaj   +1 more source

The Effect of Deep Brain Stimulation on Sleep and Cognition in Patients With Parkinson's Disease

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep–wake disturbances and cognitive decline are among the most common nonmotor symptoms of Parkinson's disease (PD). Deep brain stimulation (DBS) can successfully alleviate motor symptoms. However, the impact on sleep–wake disturbances and cognitive decline, and their interaction, is yet unclear.
Monique E. H. Valk‐Geuke, Gert J. Geurtsen, Rob M. A. de Bie, Rick Schuurman, Martijn Beudel, Esmée Verwijk   +5 more
wiley   +1 more source

MAGICS. III. Seeds Sink Swiftly: Nuclear Star Clusters Dramatically Accelerate Seed Black Hole Mergers

The Astrophysical Journal
Merger rate predictions of massive black hole (MBH) seeds from large-scale cosmological simulations differ widely, with recent studies highlighting the challenge of low-mass MBH seeds failing to reach the galactic center, a phenomenon known as the seed ...
Diptajyoti Mukherjee, Yihao Zhou, Nianyi Chen, Ugo Niccolò Di Carlo, Tiziana Di Matteo   +4 more
doaj   +1 more source

Kinematics of globular cluster systems in galaxy mergers [PDF]

, 2007
Christopher C. Hayward, Thomas J. Cox, Lars Hernquist   +2 more
openalex   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Fast-Growing SMBHs in Fast-Growing Galaxies, at High Redshifts: The Role of Major Mergers As Revealed by ALMA [PDF]

, 2017
Benny Trakhtenbrot, P. Lira, H. Netzer, C. Cicone, R. Maiolino, Ohad Shemmer   +5 more
openalex   +1 more source

The fall of the Haag (LL4‐6) chondrite breccia—Just 8 years after the nearby fall Stubenberg (LL6)

Meteoritics &Planetary Science, EarlyView.
Abstract On October 24, 2024, an impressive fireball was visible over Austria. After the possible strewn field was calculated, the first sample of the Haag meteorite, with a mass of 8.76 g, was discovered on November 2, 2024, 8 days after the fireball event. Four more samples were found afterward putting the total sample mass at about 151 g.
Addi Bischoff, Markus Patzek, Jean‐Alix Barrat, Stig Bartel, Jasper Berndt, Henner Busemann, Tommaso Di Rocco, Mattias Ek, Manuela A. Fehr, Dieter Heinlein, Daniela Krietsch, Björn Lehnert, Colin Maden, Oscar Marchhart, Martin Martschini, Silke Merchel, Andreas Pack, Andrea Patzer, Marie Pichotta, Maximilian P. Reitze, Philippe Schmitt‐Kopplin, Maria Schönbächler, Leon Thannheiser, Iris Weber, Alexander Wieser, Karl Wimmer   +25 more
wiley   +1 more source

Galaxy evolution in the post-merger regime. III -- The triggering of active galactic nuclei peaks immediately after coalescence

The Open Journal of Astrophysics
Galaxy mergers have been shown to trigger AGN in the nearby universe, but the timescale over which this process happens remains unconstrained. The Multi-Model Merger Identifier (MUMMI) machine vision pipeline has been demonstrated to provide reliable ...
Sara Ellison, Leonardo Ferreira, Robert Bickley, Tess Grindlay, Samir Salim, Shoshannah Byrne-Mamahit, Shobita Satyapal, David R. Patton, Jillian M. Scudder   +8 more
doaj   +1 more source

Dynamical Properties of Eccentric Nuclear Disks: Stability, Longevity, and Implications for Tidal Disruption Rates in Post-merger Galaxies

, 2018
Ann-Marie Madigan, Andrew Halle, Mackenzie Moody, Michael McCourt, C. J. Nixon, Heather N. Wernke   +5 more
openalex   +2 more sources

Anxious Projections: Mass Hysteria and the Problem of Interpretation

Medical Anthropology Quarterly, EarlyView.
Abstract Stories of “mass hysteria” among teenage girls have often graced the headlines of Nepal's local and national newspapers, creating a public spectacle of a strange and mysterious form of affliction. Treatments include both shamanic rituals and psychosocial interventions, a new therapeutic modality that has gained prominence over the past two ...
Aidan Seale‐Feldman
wiley   +1 more source