Iijima, T; Gehrz, R. D; Jones, T. J; Lawrence, G; Sivaraman, K. R; Prabhu, T. P; Ghosh, K. K; Anupama, G. C; Selvakumar, G(Smithsonian Astrophysical Observatory, 1991-04)
Kamath, U. S; Ashok, N. M; Anupama, G. C(Astronomical Society of India, 2008-12)
We present near-infrared and optical spectra of the fast nova V4444 Sagittarii at two single epochs in the early decline phase and unfiltered images obtained in quiescence. Based on this and other available data, we discuss ...
Nagabhushana, S; Nagesh, Suresh; Prasad, B. R(World Scientific, 2021-06)
There is a continuous need to enhance the aperture size of telescopes by astronomers to explore the space
much deeper by getting better resolutions and high image quality. Supporting large optics and maintaining
high ...
Razdan, A; Haungs, A; Rebel, H; Bhat, C. L(Astronomical Society of India, 2002)
We make a comparative study of the classification potential of various image and non-image parameters which are measurable with the TACTIC array focal plane instrumentation. The image parameters include conventional Hillas ...
Akanksha, K; Pravabati, C; Appleby, S; Park, C(IOP Publishing, 2018-10)
We employ the rank-2 contour Minkowski tensor in two dimensions to probe length and time scales of ionized bubbles during the epoch of reionization. We demonstrate that ionized bubbles are not circular, and hence not ...
Dhar, A(Indian Institute of Astrophysics, 2013-08)
Ultracold atoms is one of the most rapidly expanding fields of modern science. Its ap-
plications are not restricted to just atomic and molecular physics, but also to condensed
matter physics, astrophysics, quantum ...
Anand, M. N(Indian Institute of Astrophysics, 2024-05-29)
We perceive time as a passage of events, a marker of change. In astronomy and astrophysics, we study events occurring over a short time (order of seconds) to long-term (a few years) variability. Accurate time stamping is ...
Rajamohan, R(Indian Institute of Astrophysics, Bangalore, 1977)
Spectroscopic observations of the single-lined binary, NU Centauri during the years 1968-1972 were utilised to derive fresh orbital elements of this system. The measured radial velocities indicate that the primary component ...
It is argued that the occurrence of nuclear activity and supernovae in E and S0 galaxies are correlated and a result of accretion of gas by the galaxy.
Sivaram, C; Arun, K; Kiren, O. V(Science Publications, 2014)
In this study we explore the various aspects involved in nuclear detonations occurring around compact objects and the energetics involved. We discuss the possibility of sub-Chandrasekhar white dwarfs detonating due to the ...
Datta, B; Sahu, P. K(Elsevier Science B.V., 1993-12-02)
We calculate an equation of state of nuclear matter based on the derivative scalar coupling model proposed by Zimanyi and Moszkowski, using improved values of the saturation density and binding energy. Comparison of this ...
Panda, P. K; Das, B. P(Indian Association for the Cultivation of Science, 2010-07)
We calculate the binding energy, charge radii in ,129Ba-143Ba and 214Ra-228Ra using the relativistic
mean field theory which includes scalar and vector mesons. We then evaluate the nuclear structure corrections to the ...
Geetha, K. P; Singh, A. D; Das, B. P; Unnikrishnan, C. S(The American Physical Society, 1998-07)
An experiment to observe parity nonconservation using the \|5p/Sup66s>1/2-->\|5p/Sup65d>3/ 2 transition in Ba/Sup +has been proposed [N. Fortson, Phys. Rev. Lett., 70, 2383 (1993)]. We have carried out relativistic ...
The nucleus of NGC 2903 is identified on near infrared photographs. The energy distribution of this nucleus in the visual region of the spectrum is estimated from available observations. The continuum compares well with ...
Shah, G. A(Indian Institute of Astrophysics, Bangalore, 1983)
Techniques for calculating the spherical Bessel functions of complex argument lying in any quadrant of the z-plane and arbitary orders have been developed. The method applies to real, pure imaginary or complex arguments. ...
Shah, G. A(Indian Institute of Astrophysics, Bangalore, 1977)
A new procedure for evaluating the basic quantities connected with the Mie theory of scattering by a sphere is presented. Some independent numerical techniques are developed to enable one to achieve the desired accuracy. ...