Browsing by Title
Now showing items 13239-13258 of 24080
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The Magnetic Field and Maser Structure in the Proto-Planetary Nebula IRAS 20406+2953
(Astronomical Society of the Pacific, 2004)Our understanding of the morphological evolutionary path from AGB star to planetary nebula is still unclear; broadly speaking, we are faced with shaping models that primarily detail varying forms of binary evolution, and ... -
Magnetic field configuration at the galactic center investigated by wide-field near-infrared polarimetry : transition from a toroidal to a poloidal magnetic field
(2010)We present a large-scale view of the magnetic field (MF) in the central 2° × 2° region of our Galaxy. The polarization of point sources has been measured in the J, H, and KS bands using the near-infrared polarimetric camera ... -
Magnetic field decay in neutron stars : from soft gamma repeaters to weak-field magnetars'
(2012-06)The recent discovery of the weak-field, old magnetar soft gamma repeater (SGR) J0418+5729, whose dipole magnetic field, Bdip, is less than 7.5 x 10(12) G, has raised perplexing questions: how can the neutron star produce ... -
Magnetic field strengths in the hotspots of 3C 33 and 111..
(1998)We report on ROSAT HRI observations of the nearby powerful radio galaxies 3C33 and 3C111, which both have detected optical hot spots. We find nuclear X-ray sources in both objects, but no X-ray emission from the hot spots. ... -
Magnetic field structure in dark clouds
(Reidel Publishing Company (Kluwer), 1987) -
The magnetic field structure in W51A
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The magnetic field structure of the DR21 region
(1999)We present results of imaging polarimetry of the H2 v=1--0 S(1) line towards the outflow lobes of DR21. The polarization vectors are produced by dichroic absorption in a medium of aligned grains and therefore delineate the ... -
Magnetic field structures in star-forming regions : mid-infrared imaging polarimetry of K3-50
(2015-11-01)We report new imaging polarimetry observations of the Galactic compact H ii region K3-50 using CanariCam at the Gran Telescopio Canarias. We use a standard polarimetric analysis technique, first outlined by Aitken, to ... -
Magnetic Fields in Astrophysical Jets : From Launch to Termination
(2012)Long-lived, stable jets are observed in a wide variety of systems, from protostars, through Galactic compact objects to active galactic nuclei (AGN). Magnetic fields play a central role in launching, accelerating, and ... -
Magnetic fields in discs : what can be learned from infrared and mm polarimetry ?
(2002)Polarimetric imaging in the infrared and submm offers the possibility of identifying magnetic field configurations in astronomical objects. To test this conjecture a set of field geometries within internally heated discs ... -
Magnetic fields in galactic haloes
(2012-05)Magnetic fields on a range of scales play a large role in the ecosystems of galaxies, both in the galactic disk and in the extended layers of gas away from the plane. Observing magnetic field strength, structure and ... -
Magnetic fields in massive star-forming regions
(2007-12-01)We present the largest sample of high-mass star-forming regions observed using sub- millimetre imaging polarimetry. The data were taken using SCUBA in conjunction with the polarimeter on the JCMT in Hawaii. In total, 16 ... -
Magnetic Fields in Star Forming Regions - Near-Infrared and Submillimeter Approaches
(Astronomical Society of the Pacific, 1996)In order to study the magnetic field structure in star forming regions on various scales, we have been conducting both near-infrared and submillimeter polarimetry toward nearby molecular clouds. The near-infrared approach ... -
Magnetic fields in the infrared dark cloud G34.43+0.24
(2019-09-24)We present the B-fields mapped in IRDC G34.43+0.24 using 850\,$\mu$m polarized dust emission observed with the POL-2 instrument at JCMT. We examine the magnetic field geometries and strengths in the northern, central, and ... -
Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements
(2018-07-01)We present the results of dust emission polarization measurements of Ophiuchus-B (Oph-B) carried out using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its associated polarimeter (POL-2) on the ... -
Magnetic resonance imaging and tensor-based morphometry in the MPTP non-human primate model of Parkinson's disease
(2017-07-24)Parkinson's disease (PD) is the second most common neurodegenerative disorder producing a variety of motor and cognitive deficits with the causes remaining largely unknown. The gradual loss of the nigrostriatal pathway is ... -
Magnetic Resonance Imaging Assessment of Squamous Cell Carcinoma of the Anal Canal Before and After Chemoradiation: Can MRI Predict for Eventual Clinical Outcome?
(2010)Purpose: To describe the MRI appearances of squamous cell carcinoma of the anal canal before and after chemoradiation and to assess whether MRI features predict for clinical outcome. Methods and Materials: Thirty-five ...