Identifying Zeeman pairs of hydroxyl masers in NGC 6334I-MM3 via velocity drift-Reference-Cited by-同舟云学术

Identifying Zeeman pairs of hydroxyl masers in NGC 6334I-MM3 via velocity drift

Published:2023-01-28 Issue:4 Volume:520 Page:5464-5474
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

MacLeod G C¹²,Smits D P³^ORCID,Hunter T R⁴,Brogan C⁴,Chibueze J O⁵⁶^ORCID,van den Heever S P²

Affiliation:

1. Department of Physical Sciences, The Open University of Tanzania , PO Box 23409, Dar es Salaam, Tanzania

2. SARAO, Hartebeesthoek Radio Astronomy Observatory , PO Box 443, Krugersdorp 1741, South Africa

3. Department of Mathematical Sciences, University of South Africa , Private Bag X6, Florida 1709, South Africa

4. NRAO , 520 Edgemont Road, Charlottesville, VA 22903, USA

5. Centre for Space Research, North-West University , Potchefstroom 2520, South Africa

6. Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria , Carver Building, 1 University Road, Nsukka 410001 Nigeria

Abstract

ABSTRACTA new tool to identify possible Zeeman pairs is presented here: the right circularly polarized (RCP) and left circularly polarized (LCP) components of a pair with velocity drift at the same rate. Long-term monitoring of hydroxyl transitions towards NGC 6334I-MM3 has resulted in the identification of three possible Zeeman pairs, one each at the 1.667, 6.030, and 6.035 GHz transitions, where the rate of drift of the RCP feature equals that of the LCP component. Historical observations suggest that their drift has been occurring over 40 yr. A fourth pair in the 1.720 GHz OH transition may indicate magnetic field variation over 50 yr.

Funder

National Research Foundation

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad296/48947442/stad296.pdf

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