Results 101 to 110 of about 240,141 (195)

Gamma-ray emission from early-type stars interacting with AGN jets [PDF]

, 2019
We study the interaction of early-type stars with the jets of active galactic nuclei. A bow-shock will form as a consequence of the interaction of the jet with the winds of stars and particles can be accelerated up to relativistic energies in these ...
Bosch Ramon, Valentí, Araudo, Anabella Teresa, Romero, Gustavo Esteban   +2 more
core  

PKS J0805-0111: A Second Owens Valley Radio Observatory Blazar Showing Highly Significant Sinusoidal Radio Variability—The Tip of the Iceberg

The Astrophysical Journal
Owens Valley Radio Observatory observations of the supermassive black hole binary (SMBHB) candidate PKS 2131−021 revealed, for the first time, six likely characteristics of the phenomenology exhibited by SMBHBs in blazars, of which the most unexpected ...
P. V. de la Parra, S. Kiehlmann, P. Mróz, A. C. S. Readhead, A. Synani, M. C. Begelman, R. D. Blandford, Y. Ding, F. Harrison, I. Liodakis, W. Max-Moerbeck, V. Pavlidou, R. Reeves, M. Vallisneri, M. F. Aller, M. J. Graham, T. Hovatta, C. R. Lawrence, T. J. W. Lazio, A. A. Mahabal, B. Molina, S. O’Neill, T. J. Pearson, V. Ravi, K. Tassis, J. A. Zensus   +25 more
doaj   +1 more source

Particles in Relativistic Magnetohydrodynamic Jets. II. Bridging Jet Dynamics with Multi–wave band Nonthermal Emission Signatures

The Astrophysical Journal
Relativistic magnetized jets, originating near black holes, are observed to exhibit substructured flows. In this study, we present synthetic synchrotron-emission signatures for different lines of sight and frequencies, derived from three-dimensional ...
Ravi Pratap Dubey, Christian Fendt, Bhargav Vaidya   +2 more
doaj   +1 more source

A Study of Particle Acceleration in Blazar Jets

The Astrophysical Journal
The particle acceleration of blazar jets is crucial to high-energy astrophysics, yet the acceleration mechanism division in blazar subclasses and the underlying nature of these mechanisms remain elusive. In this work, we utilized the synchrotron spectral
Hubing Xiao, Wenxin Yang, Yutao Zhang, Shaohua Zhang, Junhui Fan, Liping Fu, Jianghe Yang   +6 more
doaj   +1 more source

Causality and Communication: Relativistic astrophysical jets and the implementation of science communication training in astronomy classes [PDF]

, 2014
Part I: Relativistic jets emitted from the centers of some galaxies (called active galaxies) exhibit many interesting behaviors that are not yet fully understood: acceleration and collimation over vast distances, for instance, and occasional flaring ...
Kohler, Susanna
core  

Multimessenger Emission Derived from Relativistic Magnetized Jet Dynamics Using a Multizone Framework

The Astrophysical Journal
Relativistic jets from active galactic nuclei (AGN) are highly energetic and emit radiation across a wide range of frequencies. Despite several observational studies, their particle composition still remains a key open question.
Harshita Bhuyan, Bhargav Vaidya, Christian Fendt, Aditya Sharma   +3 more
doaj   +1 more source

Probing medium response via strangeness enhancement around quenched jets

Physics Letters B
Jet-induced medium excitation is a crucial part of jet interactions with the quark-gluon plasma (QGP) in relativistic heavy-ion collisions, and has recently been confirmed by experiment for the first time.
Ao Luo, Shanshan Cao, Guang-You Qin
doaj   +1 more source

The Efficiency of the Magnetic Acceleration in Relativistic Jets

Astrophysics and Space Science, 2004
8 pages, 1 figure, to appear in ``Virtual Astrophysical Jets'', Ap&SS ...
openaire   +3 more sources

Relativistic Jets from Millisecond Protomagnetars

The Astrophysical Journal Letters
Rapidly rotating, strongly magnetized neutron stars (“millisecond protomagnetars”) formed in stellar core collapse, neutron star mergers, and white dwarf accretion-induced collapse have long been proposed as central engines of gamma-ray bursts (GRBs) and
Dhruv K. Desai, Luciano Combi, Daniel M. Siegel, Brian D. Metzger   +3 more
doaj   +1 more source

Kinetic Simulations of the Kruskal–Schwarzschild Instability in Accelerating Striped Outflows: Dynamics and Energy Dissipation

The Astrophysical Journal
Astrophysical relativistic outflows are launched as Poynting-flux dominated, yet the mechanism governing efficient magnetic dissipation, which powers the observed emission, is still poorly understood. We study magnetic energy dissipation in relativistic “
William Groger, Hayk Hakobyan, Lorenzo Sironi   +2 more
doaj   +1 more source