High Resolution, High Sensitivity Imaging of the Galactic Center at 330 MHz.

被引：2

作者：

Nord, Michael E. ^{[1
,2
]}

Brogan, Crystal L. ^{[3
]}

Hyman, Scott D. ^{[4
]}

Lazio, T. Joseph W. ^{[1
]}

Kassim, Namir E. ^{[1
]}

LaRosa, T. N. ^{[5
]}

Anantharamaiah, K. ^{[6
]}

Duric, Neboja ^{[2
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

[2] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[3] Natl Radio Astron Observ, Socorro, NM 87801 USA

[4] Sweet Briar Coll, Dept Phys, Sweet Briar, VA 24595 USA

[5] Kennesaw State Univ, Dept Biol & Phys Sci, Kennesaw, GA 30144 USA

[6] Raman Res Inst, Bangalore 560080, Karnataka, India

来源：

ASTRONOMISCHE NACHRICHTEN | 2003年 / 324卷

关键词：

Galactic Center; Low Radio Frequencies; Sgr A*; Non-Thermal Sources; Wide-field Imaging;

D O I：

10.1002/asna.200385077

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results derived from a wide field, sub-arcminute resolution VLA image of the Galactic Center region at 330 MHz (lambda = 90 cm). With a resolution of similar to 7 '' x 12 '' and an rms noise of 1.6 mJy beam(-1), this image represents a significant increase in resolution and sensitivity over the previously published VLA image at this frequency (eg. LaRosa et al. 2000). The improvement in sensitivity has significantly increased the census of small diameter sources in the region, resulted in the detection of two new Non-Thermal Filaments (NTFs) and 18 new NTF candidates, and resulted in the lowest frequency (tentative) detection of Sgr A*.

引用

页码：9 / 16

页数：8

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