Cosmic evolution and luminosity dependence of the physical sizes of powerful radio galaxies and quasars
- A. Singal
- Physics
- 1 July 1993
The redshift (z) and luminosity (P) dependence of the physical sizes (l) of powerful radio sources is examined, separately for radio galaxies and quasars. Our sample of 789 sources, wich includes…
LARGE PECULIAR MOTION OF THE SOLAR SYSTEM FROM THE DIPOLE ANISOTROPY IN SKY BRIGHTNESS DUE TO DISTANT RADIO SOURCES
- A. Singal
- Physics
- 28 October 2011
According to the cosmological principle, the universe should appear isotropic, without any preferred directions, to an observer whom we may consider to be fixed in the comoving coordinate system of…
Evidence against the unified scheme for powerful radio galaxies and quasars
- A. Singal
- Physics
- 1 May 1993
It is shown that the currently popular unified scheme, in which the observed differences in the radio properties of powerful radio galaxies and steep-spectrum quasars are considered to arise merely…
GIANT-PULSE EMISSION FROM PSR B0950+08
We present here the detection of giant-pulse emission from PSR B0950+08, a normal-period pulsar. The observations, made at 103 MHz and lasting for about 10 months, have shown on a number of days the…
The equivalence principle and an electric charge in a gravitational field
- A. Singal
- Physics
- 1 September 1995
It is shown that there is no violation of the strong principle of equivalence in the case of an electric charge either falling freely or supported in a static uniform gravitational field. For a…
Polarization properties of radio cores in active galaxies.
- D. J. Saikia, A. Singal, T. Cornwell
- Physics
- 1987
DISCORDANCE OF THE UNIFIED SCHEME WITH OBSERVED PROPERTIES OF QUASARS AND HIGH-EXCITATION GALAXIES IN THE 3CRR SAMPLE
- A. Singal
- Physics
- 10 June 2013
We examine the consistency of the unified scheme of Fanaroff–Riley type II radio galaxies and quasars with their observed number and size distributions in the 3CRR sample. We separate the…
MAXIMUM BRIGHTNESS TEMPERATURE OF AN INCOHERENT SYNCHROTRON SOURCE : INVERSE COMPTON LIMIT—A MISNOMER
- A. Singal
- Physics
- 10 September 2009
We show that an upper limit of ∼1012 K on the peak brightness temperature for an incoherent synchrotron radio source, commonly referred to in the literature as an inverse Compton limit, really may…
DIFFERENTIAL NUMBER COUNTS OF RADIO GALAXIES AND QUASARS : EVIDENCE AGAINST THE UNIFIED SCHEME
- A. Singal
- Physics
- 1 February 1996
Large disparity in cosmic reference frames determined from the sky distributions of radio sources and the microwave background radiation
- A. Singal
- PhysicsPhysical Review D
- 25 April 2019
The angular distribution of the Cosmic Microwave Background Radiation (CMBR) in sky shows a dipole asymmetry, ascribed to the observer's motion (peculiar velocity of the solar system!), relative to…
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