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From a combination of MERLIN (Multi-Element Radio-Linked Interferometer Network) and global VLBI (Very Long Baseline Interferometry) observations of the starburst galaxy M82, images of 36 discrete sources at resolutions ranging from ~3 to…

宇宙学与河外天体物理 · 物理学 2015-05-19 D. Fenech , R. Beswick , T. W. B. Muxlow , A. Pedlar , M. K. Argo

The results of an extremely deep, 8-day long observation of the central kpc of the nearby starburst galaxy M82 using MERLIN (Multi-Element Radio Linked Interferometer Network) at 5 GHz are presented. The 17E-06 Jy/beam, rms noise level in…

天体物理学 · 物理学 2009-11-13 D. M. Fenech , T. W. B. Muxlow , R. J. Beswick , A. Pedlar , M. K. Argo

Observations of the starburst galaxy, M82, have been made with a 20-station global VLBI array at $\lambda$18cm. Maps are presented of the brightest young supernova remnants (SNR) in M82 and the wide-field mapping techniques used in making…

Observations of the starburst galaxy, M82, have been made with the VLA in its A-configuration at 15 GHz and MERLIN at 5 GHz enabling a spectral analysis of the compact radio structure on a scale of < 0.1'' (1.6 pc). Crucial to these…

天体物理学 · 物理学 2009-11-07 A. R. McDonald , T. W. B. Muxlow , K. A. Wills , A. Pedlar , R. J. Beswick

We present the results of a second epoch of 18cm global Very Long-Baseline Interferometry (VLBI) observations, taken on 23 February 2001, of the central kiloparsec of the nearby starburst galaxy Messier 82. These observations further…

We have determined detailed radio spectra for 26 compact sources in the starburst nucleus of M82, between 74 and 1.3 cm. Seventeen show low-frequency turnovers. One other has a thermal emission spectrum, and we identify it as an HII region.…

天体物理学 · 物理学 2009-10-30 Michael L. Allen , Philipp P. Kronberg

The nuclear starburst in the nearby galaxy M82 provides an excellent laboratory for understanding the physics of star formation. This galaxy has been extensively observed in the past, revealing tens of radio-bright compact objects embedded…

We present 7mm Very Large Array continuum images of the starburst galaxy M82. On arcsecond scales, two-thirds of the 7mm continuum consists of free-free emission from HII regions. In the subarcsecond resolution map, we identify 14 compact…

宇宙学与河外天体物理 · 物理学 2009-11-13 Chao-Wei Tsai , Jean L. Turner , Sara C. Beck , David S. Meier , Paul T. P. Ho

In this article I will briely review the current status of radio observations of nearby supernovae and their remnants. This review will initially address observations of the radio light curves of nearby core-collapse supernovae, followed by…

天体物理学 · 物理学 2007-05-23 R. J. Beswick

We have presented the results of a second epoch of global Very Long Baseline Interferometry observations, taken on 23 February 2001 at a wavelength of 18 cm, of the central kiloparsec of the nearby starburst galaxy Messier 82. These…

天体物理学 · 物理学 2007-05-23 J. D. Riley , A. Pedlar , T. W. B. Muxlow , A. R. McDonald , R. J. Beswick , K. A. Wills

We present a new catalogue of radio sources in the face-on spiral galaxy M83. Radio observations taken in 2011, 2015, and 2017 with the Australia Telescope Compact Array (ATCA) at 5.5 and 9 GHz have detected 270 radio sources. Although a…

星系天体物理 · 物理学 2020-05-13 Thomas D. Russell , Richard L. White , Knox S. Long , William P. Blair , Roberto Soria , P. Frank Winkler

This paper presents the results of the 2009-2010 monitoring sessions of the starburst galaxy M82, obtained with the Multi-Element Radio-Linked Interferometer Network (MERLIN) at 5GHz and e-MERLIN at 6GHz. Combining several 5GHz MERLIN…

宇宙学与河外天体物理 · 物理学 2015-06-11 M. A. Gendre , D. M. Fenech , R. J. Beswick , T. W. B. Muxlow , M. K. Argo

We review VLBI observations of supernovae over the last quarter century and discuss the prospect of imaging future supernovae with space VLBI in the context of VSOP-2. From thousands of discovered supernovae, most of them at cosmological…

天体物理学 · 物理学 2008-07-08 Norbert Bartel

We report the discovery of ten compact H-alpha-bright sources in the post-starburst region northeast of the center of M82, ``M82 B.'' These objects have H alpha luminosities and sizes consistent with Type II supernova remnants (SNRs). They…

We searched for X-ray supernova remnants (SNRs) in the starburst region of M82, using archival data from the Chandra X-ray Observatory with a total effective exposure time of 620 ks with an X-ray spectroscopic selection. Strong…

星系天体物理 · 物理学 2021-08-04 K. Iwasawa

We have performed new 1.4 GHz and 5 GHz observations of the Local Group galaxy M33 with the Jansky Very Large Array. Our survey has a limiting sensitivity of 20 uJy (4-sigma) and a resolution of 5.9 arcsec (FWHM), corresponding to a spatial…

高能天体物理现象 · 物理学 2019-04-24 Richard L. White , Knox S. Long , Robert H. Becker , William P. Blair , David J. Helfand , P. Frank Winkler

We present the highest resolution, wide-field radio survey of a nearby face-on star-forming galaxy to date. The multi-phase centre technique is used to survey the entire disk of M51 (77 square arc minutes) at a maximum resolution of 5…

We present a high-resolution 5-GHz radio continuum map of the starburst galaxy NGC 2146 made with MERLIN and the VLA, in a search of radio supernovae and supernova remnants expected to be already produced by the most massive stars in the…

天体物理学 · 物理学 2007-05-23 A. Tarchi , N. Neininger , A. Greve , U. Klein , S. T. Garrington , T. W. B. Muxlow , A. Pedlar , B. E. Glendenning

We present analyses of deep radio observations of M83 taken with the Very Large Array spanning fifteen years, including never before published observations from 1990 and 1998. We report on the evolution of 55 individual point sources, which…

天体物理学 · 物理学 2008-11-26 L. A. Maddox , J. J. Cowan , R. E. Kilgard , C. K. Lacey , A. H. Prestwich , C. J. Stockdale , E. Wolfing

Radio observations of starburst regions in galaxies have revealed groups of compact nonthermal sources that may be radiative supernova remnants expanding in the interclump medium of molecular clouds. Because of the high pressure in…

天体物理学 · 物理学 2009-11-06 Roger A. Chevalier , Claes Fransson
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