The supernova remnants G 67.7+1.8, G 31.5-0.6 and G 49.2-0.7
نویسندگان
چکیده
منابع مشابه
G 309 . 2 – 00 . 6 and jets in supernova remnants
We present Australia Telescope Compact Array observations of the supernova remnant (SNR) G309.2–00.6. In a 1.3-GHz continuum image the remnant appears as a near-circular shell, but with two brightened and distorted arcs of emission on opposite sides. H i absorption against the SNR yields a distance in the range 5.4 to 14.1 kpc, corresponding to an age (1 − 20) × 10 3 yr. On the basis of the SNR...
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G-Frames in Hilbert spaces are a redundant set of operators which yield a representation for each vector in the space. In this paper we investigate the connection between g-frames, g-orthonormal bases and g-Riesz bases. We show that a family of bounded operators is a g-Bessel sequences if and only if the Gram matrix associated to its denes a bounded operator.
متن کامل1 - 0 observations of molecular gas interacting with galactic supernova remnants G 5 . 4 - 1 . 2 , G 5 . 55 + 0 . 32 and G 5 . 71 - 0 . 08 ⋆
Context. The field just West of the galactic supernova remnant W28 (l=6.4 o , b=-0.2 o) harbors 3 of 5 newly-discovered 1720 OH maser spots and two recently-discovered candidate supernova candidates (one of which is a γ-ray source), as well as several compact and classical HII regions. Aims. To show the interaction of radio supernova remnants with ambient molecular gas in sky field just West of...
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To a simple graph $G=(V,E)$, we correspond a simple graph $G_{triangle,square}$ whose vertex set is ${{x,y}: x,yin V}$ and two vertices ${x,y},{z,w}in G_{triangle,square}$ are adjacent if and only if ${x,z},{x,w},{y,z},{y,w}in Vcup E$. The graph $G_{triangle,square}$ is called the $(triangle,square)$-edge graph of the graph $G$. In this paper, our ultimate goal is to provide a link between the ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2001
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20010137