Results 31 to 40 of about 7,156,946 (172)

Discovery of an unusual radio galaxy with a hybrid double-double and X-shaped morphology [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractWe report the discovery of the first ‘X’-shaped double-double radio galaxy (DDRG), MRC0929+164 (J0932+1611), from FIRST radio survey. The intersection angle of the lines of two pairs of radio lobes is around 20.6° for this object, much larger than other DDRGs.
C. C. Wang, H. Yan. Zhou, T. Ji, W. J. Liu, N. Jiang   +4 more
openaire   +1 more source

Modelling X-shaped radio galaxies: Dynamical and emission signatures from the Back-flow model

Astronomy & Astrophysics, 2022
Context. Active galactic nuclei typically show the presence of radio jets ranging from sub-kiloparsec to megaparsec scales. Some of these radio galaxies show distortion in their jets, forming tailed or winged sources. X-shaped radio galaxies (XRGs) are a sub-class of winged sources, the formation mechanism of which is still unclear. Aims.
Gourab Giri, Bhargav Vaidya, Paola Rossi, Gianluigi Bodo, Dipanjan Mukherjee, Andrea Mignone   +5 more
openaire   +3 more sources

GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies [PDF]

The Astronomical Journal, 2019
Abstract We present a low-frequency imaging study of an extended sample of X-shaped radio sources using the Giant Metrewave Radio Telescope (GMRT) at two frequencies (610 and 240 MHz). The sources were drawn from a Very Large Array Radio Images of the Sky at Twenty-Centimeters (FIRST) selected sample and extend an initial GMRT study at ...
Dharam V. Lal, Biny Sebastian, C. C. Cheung, A. Pramesh Rao   +3 more
openaire   +2 more sources

Detection of a parsec-scale, compact, and fading ejecta from an accreting massive black hole

Astronomy & Astrophysics
Dwarf galaxies, characterized by their low luminosities and masses, are excellent candidates for searches for intermediate-mass black holes (IMBHs), particularly when they show strong accretion and ejection activity.
Li Chao, Chang Ning, Yang Jun, Cui Lang, Ho Luis C.   +4 more
doaj   +1 more source

Weak-lensing Analysis of the Complex Cluster Merger A746 with Subaru/Hyper Suprime-Cam

The Astrophysical Journal
The galaxy cluster A746 ( z = 0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system.
K. HyeongHan, H. Cho, M. James Jee, D. Wittman, S. Cha, W. Lee, K. Finner, K. Rajpurohit, M. Brüggen, W. Forman, C. Jones, R. van Weeren, A. Botteon, L. Lovisari, A. Stroe, P. Domínguez-Fernández, E. O’Sullivan, J. Vrtilek   +17 more
doaj   +1 more source

From Flow to Function: Using Different Static Mixers to Fabricate Microarchitected Materials Via Chaotic Printing

Advanced Science, EarlyView.
Complex microarchitectures emerge from simple flow‐driven transformations as static mixers iteratively reorient and split material domains. Coupled with diverse deposition strategies, chaotic printing provides an accessible platform for fabricating architected materials that support biologically and chemically relevant processes. ABSTRACT Nature builds
Edna Johana Bolívar‐Monsalve, Carlos Fernando Ceballos‐González, Diego Alonso Quevedo‐Moreno, Irving Isaí Rendón‐Moreno, Ariel Cantoral‐Sánchez, Héctor Ambriz‐González, Mario Moisés Alvarez, Grissel Trujillo‐de Santiago   +7 more
wiley   +1 more source

Black hole masses and starbursts in X-shaped radio sources [PDF]

, 2011
It has been suggested that the X-shaped morphology observed in some radio sources can reflect either a recent merger of two supermassive black holes (SMBHs) or the presence of a second active black hole in the galactic nucleus. These scenarios are tested
Jonathan Francisco León Tavares, Vahram Chavushyan   +1 more
core  

Origin of X-shaped radio-sources: further insights from the properties of their host galaxies [PDF]

Astronomy & Astrophysics, 2016
Accepted for publication in A& ...
Melissa Gillone, CAPETTI, Alessandro, ROSSI, Paola   +2 more
openaire   +3 more sources

Deciphering the Morphological Origins of X-shaped Radio Galaxies: Numerical Modeling of Backflow versus Jet Reorientation

The Astrophysical Journal Supplement Series, 2023
Abstract X-shaped radio galaxies (XRGs) develop when certain extragalactic jets deviate from their propagation path. An asymmetric ambient medium (backflow model) or complex active galactic nucleus activity (jet-reorientation model) enforcing the jet direction to deviate may cause these structures.
Gourab Giri, Bhargav Vaidya, Christian Fendt   +2 more
openaire   +3 more sources

Serendipitous Discovery of a Young Cluster of Galaxies at z ∼ 0.5 Projected Next to the Nearby Tadpole Galaxy KUG 1138 + 327

The Astrophysical Journal
Using a 90 ks Chandra ACIS-S observation in the 0.3–7 keV band, along with complementary Low-Frequency Array and Karl G. Jansky Very Large Array data in the 120–168 MHz and 1–2 GHz ranges, we study the diffuse emission around the nearby dwarf galaxy KUG ...
Q. Daniel Wang, Juergen Ott
doaj   +1 more source