Results 61 to 70 of about 1,192 (180)

First Report of Rising‐Tone EMIC Waves Driven by the Magnetosheath High‐Speed Jet

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Magnetosheath high‐speed jets (HSJs) are pervasive transient structures with enhanced dynamic pressure in the terrestrial magnetosheath and can exert notable local impacts on the magnetopause. Although various geoeffects have been reported to be associated with HSJs, whether HSJs can drive the generation of electromagnetic ion cyclotron (EMIC)
Wentian Lei, Xinliang Gao, Xuan Zhou, Jiuqi Ma, Tong Shao, Yuxiang Wang, Quanming Lu   +6 more
wiley   +1 more source

An Unusual Change in the Radio Jets of GRS 1915+105

The Astrophysical Journal
We compare Very Large Array observations of GRS 1915+105 made in 1994 and 2023, with nearly three decades of difference. The source has experienced intriguing major changes.
Luis F. Rodríguez, I. Félix Mirabel
doaj   +1 more source

How do recollimation-induced instabilities shape the propagation of hydrodynamic relativistic jets?

Astronomy & Astrophysics
Context. Recollimation is a phenomenon of particular importance in the dynamical evolution of jets and in the emission of high-energy radiation. Additionally, the full comprehension of this phenomenon provides insights into fundamental properties of jets
Costa A., Bodo G., Tavecchio F., Rossi P., Coppi P., Sciaccaluga A., Boula S.   +6 more
doaj   +1 more source

Ultra‐Low‐L Sub‐MeV Electron Microbursts During the May 2024 Super Storm

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract During the May 2024 super storm, we identified sub‐second microburst‐type relativistic electron precipitation events at McIlwain's L∼2 $L\sim 2$ in low‐Earth orbit using the Gamma‐ray Burst Monitor (CGBM) onboard the CALorimetric Electron Telescope on the International Space Station.
Miki Kurihara, Satoshi Nakahira, Ryuho Kataoka, Yoshizumi Miyoshi, Yuto Katoh, Kazutaka Yamaoka, Yuta Kawakubo, Ken Ebisawa, Shoji Torii, Kazuhiro Yamamoto, Atsuki Shinbori, Shoya Matsuda, Yoshiya Kasahara, Fuminori Tsuchiya, Iku Shinohara, Lauren W. Blum, Alessandro Bruno   +16 more
wiley   +1 more source

Jump-starting Relativistic Flows and the M87 Jet

The Astrophysical Journal
We point out the dominant importance of plasma injection effects of relativistic winds from pulsars and black holes. We demonstrate that outside the light cylinder, the magnetically dominated outflows sliding along the helical magnetic field move nearly ...
Maxim Lyutikov, Ahmad Ibrahim
doaj   +1 more source

Is the Magnetic Field Line Curvature Really Important for Energetic Electron Losses From the Radiation Belt?

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Recently, Hua et al. (2026, https://doi.org/10.1029/2025GL120881) combined observations during a 4‐day storm period with numerical simulations and concluded that the abrupt electron loss in the field‐line‐curvature scattering (FLCS) region played a leading role in shaping the outer boundary of radiation belt (RB); the authors conjectured that ...
V. A. Sergeev, N. A. Tsyganenko
wiley   +1 more source

A Search for Supermassive Black Hole Binary Candidates in 46 yr Radio Light Curves of 83 Blazars

The Astrophysical Journal
The combined University of Michigan Radio Astronomy Observatory and Owens Valley Radio Observatory blazar monitoring programs at 14.5/15 GHz provide uninterrupted light curves of ∼ 46–50 yr duration for 83 blazars, selected from among the brightest and ...
B. Molina, P. Mróz, P. V. De la Parra, A. C. S. Readhead, T. Surti, M. F. Aller, J. D. Scargle, R. A. Reeves, H. Aller, M. C. Begelman, R. D. Blandford, Y. Ding, M. J. Graham, F. Harrison, T. Hovatta, I. Liodakis, M. L. Lister, W. Max-Moerbeck, V. Pavlidou, T. J. Pearson, V. Ravi, A. G. Sullivan, A. Synani, K. Tassis, S. E. Tremblay, J. A. Zensus   +25 more
doaj   +1 more source

INTRACLUSTER MEDIUM REHEATING BY RELATIVISTIC JETS [PDF]

The Astrophysical Journal, 2011
Accepted for publication in ...
Perucho, Manel, Quilis, Vicent, Martí, José María   +2 more
openaire   +2 more sources

MMS Observations of the Energetic Particles Within Kelvin‐Helmholtz Waves at the Boundary of the 10 May 2024 Coronal Mass Ejection (CME)

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract On 10 May 2024, Earth was hit by a CME that drove the largest geomagnetic storm in 20 years. Multi‐spacecraft observations previously showed that the ∼100 nT north‐south IMF bz ${b}_{z}$ variation was driven by Kelvin‐Helmholtz waves with wavelength ∼250 RE ${R}_{E}$ and reconnection jets in the ±z $\pm z$‐direction (Nykyri, 2024a, https://doi.
Katariina Nykyri, Neetasha Arya, Scott Boardsen, Guan Le, Harri Laakso, Lynn Wilson, Xuanye Ma, Katherine Holland, Brandon Burkholder, Leon Ofman, Kyoung‐Joo Hwang, Dinesh Radhakrishnan, Shiva Kavosi, Daniel Gershman, Christine Gabrielse, Barbara Giles, Stephen Fuselier, Jim Burch   +17 more
wiley   +1 more source

A Cooler Look at the Environment of Cygnus X-1: Searching for Dynamical Interactions within Cold Molecular Gas

The Astrophysical Journal
We present IRAM 30 m observations aimed at identifying potential outflow–interstellar medium interaction sites in the vicinity of the black hole X-ray binary Cygnus X-1, which displays persistent relativistic jets and a prominent stellar wind. Using this
Pau Bosch-Cabot, Alexandra J. Tetarenko, Valentí Bosch-Ramon, James C. A. Miller-Jones, David Russell, Sara E. Motta, Pikky Atri, María Díaz-Trigo, Isabella Mariani, Steve Prabu   +9 more
doaj   +1 more source