scholarly journals THE COMPACT, TIME-VARIABLE RADIO SOURCE PROJECTED INSIDE W3(OH): EVIDENCE FOR A PHOTOEVAPORATED DISK?

2013 ◽  
Vol 772 (2) ◽  
pp. 151 ◽  
Author(s):  
Sergio A. Dzib ◽  
Carolina B. Rodríguez-Garza ◽  
Luis F. Rodríguez ◽  
Stan E. Kurtz ◽  
Laurent Loinard ◽  
...  
Nature ◽  
1978 ◽  
Vol 272 (5655) ◽  
pp. 704-706 ◽  
Author(s):  
P. C. GREGORY ◽  
A. R. TAYLOR

2001 ◽  
Vol 182 ◽  
pp. 135-138
Author(s):  
Jean-Pierre MacQuart ◽  
Lucyna Kedziora-Chudczer ◽  
David Jauncey ◽  
David Rayner

AbstractWe find strong (> 1%) circular polarization in the intraday-variable radio source PKS 1519–273. The source exhibits ~ 12 hourly variability in all four Stokes parameters at 4.8 and 8.6 GHz, and longer timescale variability at 2.5 and 1.4 GHz. The characteristics and frequency dependence of the variability suggest that it is due to interstellar scintillation. VSOP limits on the distance to the scattering screen constrain the brightness temperature to TB > 5 × 1013 K. The fluctuations in total intensity are well-correlated with those in circular polarization, implying that the variable component of the source is −3.8 ±0.4% circularly polarized at 4.8 GHz. The origin of the circular polarization is unclear.


1983 ◽  
Vol 267 ◽  
pp. L73 ◽  
Author(s):  
D. S. Heeschen ◽  
J. Heidmann ◽  
Q. F. Yin

1955 ◽  
Vol 8 (4) ◽  
pp. 564 ◽  
Author(s):  
AWL Carter

Slee (1955) has shown that the discrete cosmic radio source Hydra-A shows variations in intensity at metre wavelengths. This is the first variable radio source to be found, other than the Sun, although Ryle and Elsmore (1951) investigated about one hundred northerly sources and found no significant variations in their intensities over a period of 18 months. The observations to be described here were undertaken firstly to check the variability of the source, then suspected by Slee, and secondly to measure its angular size and see whether this might also be variable.


2013 ◽  
Vol 118 (3) ◽  
pp. 1123-1131 ◽  
Author(s):  
Akira Morioka ◽  
Yoshizumi Miyoshi ◽  
Satoshi Kurita ◽  
Yasumasa Kasaba ◽  
Vassilis Angelopoulos ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document