Results 21 to 30 of about 48,168 (266)

The first science result with the JENSA gas-jet target: Confirmation and study of a strong subthreshold F18(p,α)O15 resonance

Physics Letters B, 2015
The astrophysical F18(p,α)O15 rate determines, in large part, the extent to which the observable radioisotope 18F is produced in novae. This rate, however, has been extremely uncertain owing to the unknown properties of a strong subthreshold resonance ...
D.W. Bardayan, K.A. Chipps, S. Ahn, J.C. Blackmon, R.J. deBoer, U. Greife, K.L. Jones, A. Kontos, R.L. Kozub, L. Linhardt, B. Manning, M. Matoš, P.D. O'Malley, S. Ota, S.D. Pain, W.A. Peters, S.T. Pittman, A. Sachs, K.T. Schmitt, M.S. Smith, P. Thompson   +20 more
doaj   +1 more source

Magnetic Tower Outflows from a Radial Wire Array Z-pinch [PDF]

, 2005
We present the first results of high energy density laboratory astrophysics experiments which explore the evolution of collimated outflows and jets driven by a toroidal magnetic field.
A. Ciardi, A. Frank, Akiyama, Ampleford, Ampleford, Bacciotti, Balick, Begelman, Bennett, Blackman, Blackman, Blandford, Bujarrabal, C. A. Jennings, Ciardi, Ciardi, Ciardi, Coffey, Contopoulos, Contopoulos, Cuneo, D. J. Ampleford, Deeney, E. G. Blackman, Farley, Foster, G. N. Hall, Galama, Gardiner, Goodson, Hardee, Hsu, Hsu, J. P. Chittenden, J. Rapley, Kato, Kato, Khokhlov, Kudoh, Kudoh, Lada, Lebedev, Lebedev, Lebedev, Leblanc, Logory, Lovelace, Lynden-Bell, Lynden-Bell, Lyutikov, MacFadyen, Matt, Meier, Mizuta, Moiseenko, Nakamura, Ouyed, Ouyed, Pearson, Pelletier, Pereira, Piran, Post, Pudritz, Raga, Reipurth, Romanova, Ryutov, Ryutov, Ryutov, S. C. Bott, S. N. Bland, S. V. Lebedev, Shibata, Shigemori, Shu, Stanek, Stone, T. Lery, Uchida, Ustyugova, Ustyugova, Ustyugova, Wardle, Wheeler   +84 more
core   +1 more source

Multi-spacecraft Observations of the 2022 March 25 CME and EUV Wave: An Analysis of Their Propagation and Interrelation

The Astrophysical Journal, 2023
This paper reports on a well-defined EUV wave associated with a coronal mass ejection (CME) observed on 2022 March 25. The CME was observed by Solar Orbiter (SolO) during its first close perihelion (0.32 au) and by several other spacecraft from different
Alessandro Liberatore, Paulett C. Liewer, Angelos Vourlidas, Carlos R. Braga, Marco Velli, Olga Panasenco, Daniele Telloni, Salvatore Mancuso   +7 more
doaj   +1 more source

Scaled laboratory experiments explain the kink behaviour of the Crab Nebula jet

Nature Communications, 2016
The periodical change of the Crab nebula’s jet direction challenges our understanding of astrophysical jet dynamics. Here the authors use high-power lasers to create a jet that can be directly compared to the Crab nebula’s, and report the detection of ...
C. K. Li, P. Tzeferacos, D. Lamb, G. Gregori, P. A. Norreys, M. J. Rosenberg, R. K. Follett, D. H. Froula, M. Koenig, F. H. Seguin, J. A. Frenje, H. G. Rinderknecht, H. Sio, A. B. Zylstra, R. D. Petrasso, P. A. Amendt, H. S. Park, B. A. Remington, D. D. Ryutov, S. C. Wilks, R. Betti, A. Frank, S. X. Hu, T. C. Sangster, P. Hartigan, R. P. Drake, C. C. Kuranz, S. V. Lebedev, N. C. Woolsey   +28 more
doaj   +1 more source

Jet collimation in the ejecta of double neutron star merger: new canonical picture of short gamma-ray bursts [PDF]

, 2014
The observations of jet breaks in the afterglows of short gamma-ray bursts (SGRBs) indicate that the jet has a small opening angle of < 10{\deg}. The collimation mechanism of the jet is a longstanding theoretical problem.
Hotokezaka, Kenta, Ioka, Kunihito, Nagakura, Hiroki, Sekiguchi, Yuichiro, Shibata, Masaru   +4 more
core   +1 more source

Jet Deflection via Cross winds: Laboratory Astrophysical Studies [PDF]

, 2004
We present new data from High Energy Density (HED) laboratory experiments designed to explore the interaction of a heavy hypersonic radiative jet with a cross wind.
A. Ciardi, A. Cunningham, A. Frank, Canto J., Canto J., D. Ampleford, E. G. Blackman, Goodman A. A., J. P. Chittenden, Lopez R., M. G. Haines, S. N. Bland, S. V. Lebedev   +12 more
core   +1 more source

Multiple Sub-Jet Model of Gamma Ray Bursts and Possible Origin of X-ray Precursors and Post-cursors [PDF]

, 2000
We assume that internal shocks of Gamma Ray Bursts (GRBs) consist of multiple sub-jets with a collimation half-angle $\sim {\rm several }\times\gamma_i^{-1}$, where $\gamma_i$ is the Lorenz factor of each sub-jet.
Nakamura, Takashi
core   +3 more sources

On the structure and stability of magnetic tower jets [PDF]

, 2012
Modern theoretical models of astrophysical jets combine accretion, rotation, and magnetic fields to launch and collimate supersonic flows from a central source. Near the source, magnetic field strengths must be large enough to collimate the jet requiring
A. Ciardi, A. Frank, Blackman, Blandford, Carroll-Nellenback, Ciardi, Cunningham, E. G. Blackman, Frank, Frank, Frank, Hardee, Hartigan, Hartigan, Hartigan, Huarte-Espinosa, J. P. Chittenden, Kato, Konigl, Krasnopolsky, Krasnopolsky, Lery, Li, Livio, Lovelace, Lynden-Bell, M. Huarte-Espinosa, Matt, Mohamed, Morsony, Nakamura, Ohsuga, Ohsuga, Ouyed, P. Hartigan, Pudritz, Reipurth, S. V. Lebedev, Shafranov, Shibata, Takeuchi, Ustyugova, Yirak   +42 more
core   +3 more sources

The Role of Macroscopic and Microscopic Jet Instabilities

EPJ Web of Conferences, 2013
Relativistic jets, be they Poynting flux or kinetic flux dominated, are current driven (CD) and/or Kelvin-Helmholtz (KH) velocity shear driven unstable. These macroscopic MHD instabilities may be responsible for some of the observed larger scale twisted ...
Hardee Philip E.
doaj   +1 more source

Astrophysical Neutrinos and Blazars

Universe, 2021
We review and discuss recent results on the search for correlations between astrophysical neutrinos and γ-ray-detected sources, with many extragalactic studies reporting potential associations with different types of blazars.
Paolo Giommi, Paolo Padovani
doaj   +1 more source