Results 31 to 40 of about 615 (164)

Low- and High-energy Neutrinos from SN 2023ixf in M101

The Astrophysical Journal Letters, 2023
Supernova (SN) 2023ixf in M101 is the closest SN explosion observed in the last decade. Therefore, it is a suitable test bed to study the role of jets in powering the SN ejecta.
Dafne Guetta, Aurora Langella, Silvia Gagliardini, Massimo Della Valle   +3 more
doaj   +1 more source

Turbulence Driven by Stellar Jets, the Possibility and the Efficiency [PDF]

The Astrophysical Journal, 2019
Abstract We investigate the feedback of the stellar jets on the surrounding interstellar gas based on 2D and 3D simulations applying HD and MHD modules of the PLUTO 4.2 code. The main question we address is whether the stellar jet can be considered as a turbulence driver into the interstellar gas.
Somayeh Sheikhnezami, Mohsen Abgharian-Afoushteh   +1 more
openaire   +2 more sources

UNIFYING THE ZOO OF JET-DRIVEN STELLAR EXPLOSIONS [PDF]

The Astrophysical Journal, 2012
We present a set of numerical simulations of stellar explosions induced by relativistic jets emanating from a central engine sitting at the center of compact, dying stars. We explore a wide range of durations of the central engine activity, two candidate stellar progenitors, and two possible values of the total energy release.
Lazzati, Davide, Morsony, Brian J., Blackwell, Christopher H., Begelman, Micthell C.   +3 more
openaire   +2 more sources

Hypersonic jets in astrophysical conditions: focus on spreading and asymmetric stability properties

New Journal of Physics, 2014
High Mach number jets emanating from young stars show remarkable collimation, low opening angle and resilience against the growth of instabilities, especially the asymmetric ones. In recent laboratory experiments instances of asymmetric three-dimensional
M Belan, D Tordella, S De Ponte, A Mignone, S Massaglia   +4 more
doaj   +1 more source

STELLAR SIGNATURES OF AGN-JET-TRIGGERED STAR FORMATION [PDF]

The Astrophysical Journal, 2014
To investigate feedback between relativistic jets emanating from Active Galactic Nuclei (AGN) and the stellar population of the host galaxy, we analyze the long-term evolution of the galaxy-scale simulations by Gaibler et al. (2012) of jets in massive, gas-rich galaxies at z ~ 2 - 3 and of stars formed in the host galaxies.
Zachary Dugan, Sarah Bryan, Volker Gaibler, Joseph Silk, Marcel Haas   +4 more
openaire   +2 more sources

Jets in Quasi-stellar Objects [PDF]

Nature, 1968
McCREA1 has raised the interesting possibility that the line spectrum from quasi-stellar objects could arise from a jet aimed toward the observer. McCrea states that this sort of model avoids the intergalactic absorption of Lyman α from 3C9 predicted by Gunn and Peterson2 if the density of neutral intergalactic hydrogen at z = 2 is of the order of 10 ...
openaire   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Jets from a stellar-mass black hole are as relativistic as those from supermassive black holes

Nature Communications
Relativistic jets from supermassive black holes in active galactic nuclei are amongst the most powerful phenomena in the universe. Similar jets from stellar-mass black holes offer a chance to study the phenomena on accessible observation time scales ...
X. Zhang, W. Yu, F. Carotenuto, R. Fender, S. Motta, A. Bahramian, J. C. A. Miller-Jones, T. D. Russell, S. Corbel, P. A. Woudt, P. Atri, C. Knigge, G. R. Sivakoff, A. K. Hughes, J. van den Eijnden, J. H. Matthews, M. C. Baglio, P. Saikia   +17 more
doaj   +1 more source

Simulated images of stellar jets

The Astronomical Journal, 1991
In many cases, the sources of jetlike Herbig-Haro objects are optically invisible, embedded objects which are usually detected at infrared wavelengths. The jets become visible only at distance of 10 16 -10 17 cm from the source, where they emerge from the molecular cloud core that surrounds the central object.
Hume A. Feldman, A. C. Raga
openaire   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source