Results 11 to 20 of about 10,320 (211)

Parabolic Jets from the Spinning Black Hole in M87 [PDF]

open access: yes, 2018
The M87 jet is extensively examined by utilizing general relativistic magnetohydrodynamic (GRMHD) simulations as well as the steady axisymmetric force-free electrodynamic (FFE) solution.
Akiyama, Kazunori   +20 more
core   +5 more sources

VLT observations of the asymmetric Etched Hourglass Nebula, MyCn 18 [PDF]

open access: yes, 2014
Context. The mechanisms that form extreme bipolar planetary nebulae remain unclear. Aims. The physical properties, structure, and dynamics of the bipolar planetary nebula, MyCn 18, are investigated in detail with the aim of understanding the shaping ...
Clyne, N.   +5 more
core   +2 more sources

WFPC2 Observations of the Cooling Flow Elliptical in Abell 1795 [PDF]

open access: yes, 1996
We present WFPC2 images of the core of the cooling flow cD galaxy in Abell 1795. An irregular, asymmetric dust lane extends 7 \h75 kpc in projection to the north-northwest.
Alan M. Watson   +24 more
core   +4 more sources

Large-scale network organization in the avian forebrain: a connectivity matrix and theoretical analysis [PDF]

open access: yes, 2013
Many species of birds, including pigeons, possess demonstrable cognitive capacities, and some are capable of cognitive feats matching those of apes.
Bingman, VP   +4 more
core   +3 more sources

SUBARU Near-Infrared Multi-Color Images of Class II Young Stellar Object, RNO91 [PDF]

open access: yes, 2007
We conducted sub-arcsecond near-infrared imaging observations of RNO91 with CIAO mounted on the SUBARU 8.2 m telescope. We present our JHK band data along with optical images, which when considered together reveal a complex circumstellar structure.
FUKAGAWA Misato   +9 more
core   +3 more sources

Sub-arcsecond Morphology of Planetary Nebulae [PDF]

open access: yes, 2010
Planetary nebulae (PNe) can be roughly categorized into several broad morphological classes. The high quality images of PNe acquired in recent years, however, have revealed a wealth of fine structures that preclude simplistic models for their formation ...
Bohigas   +13 more
core   +1 more source

Infall and Outflow around the HH 212 protostellar system

open access: yes, 2005
HH 212 is a highly collimated jet discovered in H2 powered by a young Class 0 source, IRAS 05413-0104, in the L1630 cloud of Orion. We have mapped around it in 1.33 mm continuum, 12CO ($J=2-1$), 13CO ($J=2-1$), C18O ($J=2-1$), and SO ($J_K = 6_5-5_4 ...
Chapman N. L.   +13 more
core   +1 more source

Hydrodynamic modelling of ejecta shrapnel in the Vela supernova remnant [PDF]

open access: yes, 2013
Many supernova remnants (SNRs) are characterized by a knotty ejecta structure. The Vela SNR is an excellent example of remnant in which detached clumps of ejecta are visible as X-ray emitting bullets that have been observed and studied in great detail ...
Bocchino, F.   +4 more
core   +2 more sources

HST and UKIRT imaging observations of z~1 6C radio galaxies - II. Galaxy morphologies and the alignment effect [PDF]

open access: yes, 2005
(abridged) Powerful radio galaxies often display enhanced optical/UV emission regions, elongated and aligned with the radio jet axis. The aim of this series of papers is to separately investigate the effects of radio power and redshift on the alignment ...
Allen   +57 more
core   +3 more sources

The Megaparsec-Scale X-ray Jet of the BL Lac Object OJ287

open access: yes, 2010
We present an X-ray image of the BL Lacertae object OJ287 revealing a long jet, curved by 55 degrees and extending 20", or 90 kpc from the nucleus. This de-projects to >1 Mpc based on the viewing angle on parsec scales. Radio emission follows the general
Agudo   +30 more
core   +1 more source

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