Results 31 to 40 of about 1,194,769 (355)

Scale-invariant radio jets and varying black hole spin [PDF]

open access: yes, 2016
Context. Compact radio cores associated with relativistic jets are often observed in both active galactic nuclei and X-ray binaries. Their radiative properties follow some general scaling laws that primarily depend on their masses and accretion rates ...
M. Mościbrodzka, H. Falcke, S. Noble
semanticscholar   +1 more source

ACCELERATION OF COMPACT RADIO JETS ON SUB-PARSEC SCALES [PDF]

open access: yes, 2016
Jets of compact radio sources are highly relativistic and Doppler boosted, making studies of their intrinsic properties difficult. Observed brightness temperatures can be used to study the intrinsic physical properties of relativistic jets, and constrain
Sang-Sung Lee   +4 more
semanticscholar   +1 more source

Thermal Radio Jets [PDF]

open access: yesSymposium - International Astronomical Union, 1997
Since thermal radio jets can be observed with subarsecond angular resolution and are unaffected by dust absorption, they provide a useful tool to study collimated outflows very close to the young stars that produce them. Here, I review recent results on this area, giving emphasis to the study of thermal jets in the case of the quadrupolar outflows in ...
openaire   +1 more source

Discovery of synchrotron emission from a YSO jet

open access: yesEPJ Web of Conferences, 2013
Synchrotron emission at radio wavelengths is commonly found in relativistic jets from active galactic nuclei (AGNs) and microquasars and allows the study of the magnetic field in these kind of jets.
Carrasco-González Carlos   +5 more
doaj   +1 more source

Radio Jets Clearing the Way Through a Galaxy: Watching Feedback in Action [PDF]

open access: yesScience, 2013
Pushy Black Hole The giant black holes that sit at the centers of most galaxies influence the way galaxies evolve in poorly understood ways. Morganti et al. (p. 1082; see the Perspective by McNamara) have acquired high-resolution radio images of a galaxy
R. Morganti   +4 more
semanticscholar   +1 more source

CORONAL JETS AS A CAUSE OF MICROWAVE NEGATIVE BURSTS

open access: yesSolar-Terrestrial Physics, 2020
We have investigated the cause of three “isolated” negative radio bursts recorded one after another at several frequencies in the 1–17 GHz range at the Nobeyama Radio Observatory, Ussuriysk Astrophysical Observatory, and Learmonth Solar Observatory on ...
I.V. Kuzmenko
doaj   +1 more source

Powerful Jets from Radiatively Efficient Disks, a Decades-Old Unresolved Problem in High Energy Astrophysics

open access: yesGalaxies, 2021
The discovery of 3C 273 in 1963, and the emergence of the Kerr solution shortly thereafter, precipitated the current era in astrophysics focused on using black holes to explain active galactic nuclei (AGN).
Chandra B. Singh   +2 more
doaj   +1 more source

Shocks in relativistic transverse stratified jets, a new paradigm for radio-loud AGN [PDF]

open access: yes, 2017
The transverse stratification of active galactic nuclei (AGN) jets is suggested by observations and theoretical arguments, as a consequence of intrinsic properties of the central engine (accretion disc + black hole) and external medium. On the other hand,
O. Hervet   +6 more
semanticscholar   +1 more source

Broadband VLA Spectral-line Survey of a Sample of Ionized Jet Candidates

open access: yesThe Astrophysical Journal Supplement Series, 2023
The study of the interaction between ionized jets, molecular outflows, and their environments is critical to understanding high-mass star formation, especially because jets and outflows are thought to be key in the transfer of angular momentum outward ...
E. Sanchez-Tovar   +4 more
doaj   +1 more source

Radio Jets in Young Stellar Objects with the SKA [PDF]

open access: yes, 2014
Jets are ubiquitous in the star-forming process since accretion is intimately associated with outflow. Weak free-free continuum emission in the centimeter domain is associated with these jets.
G. Anglada   +2 more
semanticscholar   +1 more source

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