Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Lankhaar, Boy"'
Autor:
Gallimore, Jack F., Impellizzeri, C. M. Violette, Aghelpasand, Samaneh, Gao, Feng, Hostetter, Virginia, Lankhaar, Boy
For the first time in an extragalactic source, we detect linearly polarized water maser emission associated with the molecular accretion disk of NGC 1068. The position angles of the electric polarization vectors are perpendicular to the axes of filam
Externí odkaz:
http://arxiv.org/abs/2410.10569
Autor:
Lankhaar, Boy, Aalto, Susanne, Wethers, Clare, Moldon, Javier, Beswick, Rob, Gorski, Mark, König, Sabine, Yang, Chentao, Mangum, Jeff, Gallagher, John, Combes, Francoise, Rigopoulou, Dimitra, González-Alfonso, Eduardo, Muller, Sébastien, Garcia-Bernete, Ismael, Henkel, Christian, Nishimura, Yuri, Ricci, Claudio
High resolution (0."037-0."13 [10-35 pc]) e-MERLIN ($\lambda6-18$ cm) and (0."024 [6.5 pc]) ALMA ($\lambda 1.1$ mm) observations have been used to image OH (hydroxyl) and H$_2$CO (formaldehyde) megamaser emission, and HCN 3->2 emission towards the nu
Externí odkaz:
http://arxiv.org/abs/2406.07620
(Abridged) Polarized emission from masers is an excellent tool to study magnetic fields in maser sources. The linear polarization of most masers is understood as an interplay of maser saturation and anisotropic pumping. However, for the latter mechan
Externí odkaz:
http://arxiv.org/abs/2401.04185
Autor:
Lankhaar, Boy, Teague, Richard
Publikováno v:
A&A 678, A17 (2023)
Magnetic fields are predicted to have a crucial impact on the structure, evolution and chemistry of protoplanetary disks. However, a direct detection of the magnetic field towards these objects has yet to be achieved. In order to characterize protopl
Externí odkaz:
http://arxiv.org/abs/2304.07346
Autor:
Lankhaar, Boy
Publikováno v:
A&A 666, A126 (2022)
(Abridged) Life is distinctly homochiral. The origins of this homochirality are under active debate. Recently, propylene-oxide has been detected in the gas-phase interstellar medium (ISM) (McGuire et al. 2016). The enantiomeric composition of ISM pro
Externí odkaz:
http://arxiv.org/abs/2207.02888
We discuss the existence of elliptical polarisation in rotational spectral lines of CO and other molecules within the context of the Anisotropic Resonant Scattering (ARS) model. We show that the effect of ARS on the radiation field can lead to not on
Externí odkaz:
http://arxiv.org/abs/2112.15104
Publikováno v:
A&A 657, A106 (2022)
(abridged) Magnetic fields are fundamental to the accretion dynamics of protoplanetary disks and they likely affect planet formation. Typical methods to study the magnetic field morphology observe the polarization of dust or spectral lines. However,
Externí odkaz:
http://arxiv.org/abs/2105.06482
Publikováno v:
A&A 644, A122 (2020)
(Abridged) Astronomical masers have been effective tools to study magnetic fields for many years. In particular, methanol can be used to probe different parts of protostars such as accretion discs and outflows, since it produces one of the strongest
Externí odkaz:
http://arxiv.org/abs/2010.04737
Autor:
Lankhaar, Boy, Vlemmings, Wouter
Publikováno v:
A&A 638, L7 (2020)
Magnetic fields play a role in the dynamics of many astrophysical processes, but they are hard to detect. In a partially ionized plasma, a magnetic field works directly on the ionized medium but not on the neutral medium, which gives rise to a veloci
Externí odkaz:
http://arxiv.org/abs/2006.12524
Autor:
Lankhaar, Boy, Vlemmings, Wouter
Publikováno v:
A&A 636, A14 (2020)
Context. Magnetic fields are important to the dynamics of many astrophysical processes and can typically be studied through polarization observations. Polarimetric interferometry capabilities of modern (sub)millimeter telescope facilities have made i
Externí odkaz:
http://arxiv.org/abs/2003.04331