Results 71 to 80 of about 384,338 (204)

Estimation of the jet inclination angle for the TDE Swift J1644+57 [PDF]

, 2019
An estimate of the jet inclination angle relative to the accreting black hole's spin can be useful to probe the jet triggering mechanism and the disc--jet coupling. A Tidal Disruption Event (TDE) of a star by a supermassive spinning black hole provides an excellent astrophysical laboratory to study the jet direction through the possibility of jet ...
arxiv   +1 more source

Statistical Properties of Dayside Whistler‐Mode Waves at Low Latitudes Under Various Solar Wind Conditions

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract While whistler‐mode waves are generated by injected anisotropic electrons on the nightside, the observed day‐night asymmetry of wave distributions raises an intriguing question about their generation on the dayside. In this study, we evaluate the distributions of whistler‐mode wave amplitudes and electrons as a function of distance from the ...
Y. Peng, W. Li, Q. Ma, X.‐C. Shen
wiley   +1 more source

Laboratory evidence of confinement and acceleration of wide-angle flows by toroidal magnetic fields

Communications Physics
Astrophysical jets play crucial roles in star formation and transporting angular momentum away from accretion discs, however, their collimation mechanism is still a subject of much debate due to the limitations of astronomical observational techniques ...
Z. Lei, L. X. Li, Z. H. Zhao, W. Sun, H. H. An, D. W. Yuan, Y. Xie, W. Q. Yuan, S. K. He, L. Cheng, Z. Zhang, J. Y. Zhong, W. Wang, B. Q. Zhu, W. M. Zhou, C. T. Zhou, S. P. Zhu, J. Q. Zhu, X. T. He, B. Qiao   +19 more
doaj   +1 more source

Will Jets Identify the Progenitors of Type Ia Supernovae? [PDF]

, 2002
We use the fact that a Type Ia supernova has been serendipitously discovered near the jet of the active galaxy 3C 78 to examine the question of whether jets can enhance accretion onto white dwarfs. One interesting outcome of such a jet-induced accretion process is an enhanced rate of novae in the vicinity of jets.
arxiv   +1 more source

MMS Analysis of a Dayside Compressed Magnetospheric Separatrix in the Presence of Cold Ions and a Moderate Guide Field

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract This study reports on a dayside magnetic reconnection event detected by the Magnetospheric Multiscale mission in the presence of a moderate guide field (≃0.5 $\simeq 0.5$ times the reconnecting magnetic field on the magnetosphere side) and assumed to be present in the whole reconnection region.
M. Baraka, O. Le Contel, P. Canu, S. W. Alqeeq, J. Dargent, A. Beck, G. Cozzani, A. Retinò, T. Chust, L. Mirioni, S. Toledo‐Redondo, M. Akhavan‐Tafti, R. Bandyopadhyay, A. Chasapis, C. Norgren, Y. Khotyaintsev, N. Ahmadi, H. Y. Wei, D. Fischer, D. J. Gershman, J. L. Burch, R. B. Torbert, B. L. Giles, S. A. Fuselier, R. E. Ergun, P.‐A. Lindqvist, C. T. Russell, R. J. Strangeway, K. R. Bromund   +28 more
wiley   +1 more source

Evidence for Helical Magnetic Fields Associated with AGN Jets and the Action of a Cosmic Battery

Galaxies, 2018
Theoretical models for the electromagnetic launching of astrophysical jets have long indicated that this process should generate helical magnetic fields, which should then propagate outward with the jet plasma.
Denise Gabuzda
doaj   +1 more source

Cluster Observations of Plasma in the High Latitude Magnetotail Associated With Cusp‐Aligned Arcs

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract During periods of northward interplanetary magnetic field (IMF), the magnetospheric structure and dynamics are dramatically different compared to the southward IMF case. Previous studies using both observations and simulations have shown that under northward IMF the magnetotail becomes dominated by closed magnetic flux and associated trapped ...
M. K. Mooney, S. E. Milan, M. Lester, I. Dandouras, C. Carr, A. N. Fazakerley   +5 more
wiley   +1 more source

Analysis of CME Interactions in Solar Corona Combining Coronagraphic Observations with Wide-field Imagers from Solar Orbiter and Parker Solar Probe

The Astrophysical Journal
Accurately determining the trajectory of coronal mass ejections (CMEs) is vital for space weather forecasting and assessing their potential impact on Earth. CMEs often deviate from a radial path, due to local pressure gradients or interactions with other
Alessandro Liberatore, Paulett C. Liewer, Manuela Temmer, Greta M. Cappello, Yara De Leo, Paulo Penteado   +5 more
doaj   +1 more source

Thermal balance of the jet in the microquasar SS433 [PDF]

, 2012
Thermal balance of the jet in the source SS433 is considered with account of radiative and adiabatic cooling, and different heating mechanisms. We consider jet heating by the inverse Compton effect of coronal hard X-ray quanta on jet electrons, the influence of shock wave propagation along the jet, and jet kinetic energy transformation into heat via ...
arxiv   +1 more source

Effects of Fine Spectral Structure of Chorus Emissions on Nonlinear Scattering and Acceleration of Radiation Belt Electrons

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Whistler‐mode chorus waves play a crucial role in accelerating electrons in Earth's outer radiation belt to relativistic and ultrarelativistic energies. While this electron evolution is typically modeled using a diffusion approximation for scattering, high‐amplitude chorus waves induce nonlinear resonant effects that challenge this approach on
Miroslav Hanzelka, Yuri Shprits, Dedong Wang, Bernhard Haas, Ondřej Santolík, Longzhi Gan   +5 more
wiley   +1 more source