Radio Observations of Several Normal Galaxies.

1965 ◽  
Vol 142 ◽  
pp. 1333 ◽  
Author(s):  
Marvin L. de Jong
Keyword(s):  
Radio Observations ◽  
Normal Galaxies

scholarly journals High supernova rate and enhanced star-formation triggered in M81-M82 encounter

2006 ◽  
Vol 2 (S237) ◽  
pp. 391-391
Author(s):  
B. Arbutina ◽  
D. Urošević ◽  
B. Vukotić
Keyword(s):  
Star Formation ◽  
Supernova Remnant ◽  
Close Encounter ◽  
Nearby Galaxy ◽  
Radio Observations ◽  
General Belief ◽  
Normal Galaxies

It is a general belief that the starburst activity of a nearby galaxy M82 was triggered in a close encounter with its massive companion M81, a few tens of million years ago. Despite the lack of supernovae observed, multiwavelength radio observations of M82 discovered a considerable number of compact supernova remnant candidates. We use these remnants to estimate the supernova rate (SNR) and the enhanced star-formation (SFR) rate in M82, and compare them with rates in normal galaxies.

scholarly journals Continuum radio emission from the Magellanic Clouds

1964 ◽  
Vol 20 ◽  
pp. 245-255 ◽  
Author(s):  
D. S. Mathewson ◽  
J. R. Healey
Keyword(s):  
Radio Emission ◽  
Radio Galaxy ◽  
Light Flux ◽  
Magellanic Clouds ◽  
Radio Observations ◽  
Normal Galaxies ◽  
Normal Galaxy ◽  
Continuum Radio ◽  
Lower Ratio

Before discussing the results of the radio observations of the Magellanic Clouds in detail, it is worth while to briefly review some of our current ideas about radio emission from “normal” galaxies which would be the classification given to the Clouds by radio astronomers. A “normal” galaxy has no striking visual peculiarity and has a much lower ratio of radio to light flux than the “radio” galaxy.

Low frequency radio observations: critical in revealing inhomogeneous shock structures

2019 ◽  
Author(s):  
Poonam Chandra ◽  
A. J. Nayana ◽  
Claes-Ingvar Bjornsson ◽  
Peter Lundqvist ◽  
Alak K. Ray
Keyword(s):  
Low Frequency ◽  
Radio Observations

scholarly journals Physical Conditions in the Compact Planetary Nebula Sw St 1

1983 ◽  
Vol 103 ◽  
pp. 520-520
Author(s):  
M. Cohen ◽  
D.R. Flower ◽  
A. Goharji
Keyword(s):  
Electron Density ◽  
Planetary Nebula ◽  
Emission Measure ◽  
Emission Feature ◽  
Radio Observations ◽  
Physical Conditions ◽  
Infra Red ◽  
High Emission

Sw St 1 is a compact and possibly young planetary nebula which has been recently observed at infra red (Aitken et al., 1979) and radio (Kwok et al., 1981) wavelengths. In the 8-13 μm region, a silicate emission feature is observed, suggesting that the nebular envelope is oxygen rich. The high emission measure determined from the radio observations implies a large value for the electron density.

Radio Observations of Interstellar Formaldehyde

1969 ◽  
Vol 1 (6) ◽  
pp. 282-283 ◽  
Author(s):  
J. B. Whiteoak ◽  
F. F. Gardner
Keyword(s):  
Transition Frequency ◽  
Radio Observations

The 111–110 transition (frequency 4829.65 MHz) of formaldehyde (CH2O) has been recently observed in absorption against a number of continuum sources by Snyder et al. with the Green Bank 140-ft telescope.

New Data of Radio Observations of Two XDINSs at Frequency 111 MHz

2011 ◽  
Author(s):  
D. Teplykh ◽  
A. Rodin ◽  
V. Malofeev ◽  
S. Logvinenko ◽  
Marta Burgay ◽  
...  
Keyword(s):  
Radio Observations
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