2019ApJ...873...16H

Query : 2019ApJ...873...16H

2019ApJ...873...16H - Astrophys. J., 873, 16-16 (2019/March-1)

Tracing magnetic field morphology using the velocity gradient technique in the presence of CO self-absorption.

HSIEH C.-H., HU Y., LAI S.-P., YUEN K.H., LIU S.-Y., HSIEH I.-T., HO K.W. and LAZARIAN A.

Abstract (from CDS):

Probing magnetic fields in self-gravitating molecular clouds is generally difficult, even with the use of polarimetry. Based on the properties of magnetohydrodynamic turbulence and turbulent reconnection, the velocity gradient technique (VGT) provides a new way of tracing magnetic field orientation and strength based on spectroscopic data. Our study tests the applicability of VGT in various molecular tracers, e.g., 12CO, 13CO, and C18O. By inspecting synthetic molecular-line maps of CO isotopologs generated through radiative transfer calculations, we show that the VGT can be successfully applied in probing the magnetic field direction in the diffuse interstellar medium, as well as in self-gravitating molecular clouds.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: magnetic fields - ISM: molecules - magnetohydrodynamics MHD - methods: numerical - radiative transfer - turbulence

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LDN 1555 DNe 06 00 39 +31 39.5           ~ 18 0

Query : 2019ApJ...873...16H

Basic data :
LDN 1555 -- Dark Cloud (nebula)
Other object types: otypes_help 		MoC ([CB88]), DNe (LDN), Cld (TGU)
ICRS coord. (ep=J2000) : 		06 00 39.0 +31 39 30 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		05 57 24.1 +31 39 26 [ ]
Gal coord. (ep=J2000) : 		179.2975 +04.1759 [ ]
Angular size (arcmin): 		6.0 7.8 90 (Opt) D 2005PASJ...57S...1D
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Hierarchy : number of linked objects
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LDN 1555 TGU H1260 P1 [CB88] 37

References (18 between 1850 and 2026) (Total 18)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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