Discovery of a new supernova remnant G21.8-3.0

doi:10.1093/mnras/staa419

NAOC Open IR

	Discovery of a new supernova remnant G21.8-3.0
	Gao, X. Y.1,2; Reich, P.3; Reich, W.3; Hou, L. G.1,2; Han, J. L.1,2,4
	2020-04-01
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
Volume	493 Issue:2 Pages:2188-2194
Abstract	Sensitive radio continuum surveys of the Galactic plane are ideal for discovering new supernova remnants (SNRs). From the Sino-German lambda 6-cm polarization survey of the Galactic plane, an extended shell-like structure has been found at l = 21 degrees.8, b = -3 degrees.0, which has a size of about 1 degrees. New observations were made with the Effelsberg 100-m radio telescope at lambda 11 cm to estimate the source spectrum, together with Urumqi lambda 6-cm and Effelsberg lambda 21-cm data. The spectral index of G21.8-3.0 was found to be alpha = -0.72 +/- 0.16. Polarized emission was mostly detected in the eastern half of G21.8-3.0 at both lambda 6 and lambda 11 cm. These properties, together with the Ha filament along its northern periphery and the lack of infrared emission, indicate that the emission is non-thermal, as is usual in shell-type SNRs.
Keyword	methods: observational ISM: supernova remnants radio continuum: general
Funding Organization	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
DOI	10.1093/mnras/staa419
WOS Keyword	GALACTIC PLANE ; RADIO-CONTINUUM ; IDENTIFICATION ; EMISSION ; CATALOG
Language	英语
Funding Project	National Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[U1831103] ; National Natural Science Foundation of China[11933011] ; National Natural Science Foundation of China[11833009] ; National Key R&D Program of China[2017YFA0402701] ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS
Funding Organization	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; CAS-NWO cooperation programme ; CAS-NWO cooperation programme ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000525996700046
Publisher	OXFORD UNIV PRESS
Citation statistics
Document Type	期刊论文
Identifier	http://ir.bao.ac.cn/handle/114a11/55872
Collection	中国科学院国家天文台
Corresponding Author	Gao, X. Y.
Affiliation	1.Chinese Acad Sci, Natl Astron Observ, Jia 20 Datun Rd, Beijing 100101, Peoples R China 2.Chinese Acad Sci, CAS Key Lab FAST, Natl Astron Observ, Beijing, Peoples R China 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.Univ Chinese Acad Sci, Sch Astron, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Gao, X. Y.,Reich, P.,Reich, W.,et al. Discovery of a new supernova remnant G21.8-3.0[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,493(2):2188-2194.
APA	Gao, X. Y.,Reich, P.,Reich, W.,Hou, L. G.,&Han, J. L..(2020).Discovery of a new supernova remnant G21.8-3.0.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,493(2),2188-2194.
MLA	Gao, X. Y.,et al."Discovery of a new supernova remnant G21.8-3.0".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 493.2(2020):2188-2194.

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