Zobrazeno 1 - 10
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pro vyhledávání: '"Gopal Krishna"'
We report a novel pilot project to characterise intra-night optical variability (INOV) of an extremely rare type of quasar, which has recently been caught in the act of transiting from a radio-quiet to radio-loud state, on a decadal time scale. Such
Externí odkaz:
http://arxiv.org/abs/2411.08106
In this paper, we explore the relationship between repdigits and associated Pell numbers, specifically focusing on two main aspects: expressing repdigits as the difference of two associated Pell numbers, and identifying which associated Pell numbers
Externí odkaz:
http://arxiv.org/abs/2411.00001
Autor:
Gopal-Krishna
This note chronicles the early steps and incidences from over four decades ago, that gave a kickstart to research on the now prominent subclass of radio galaxies, called 'Gigahertz-Peaked-Spectrum' (GPS) sources. In this first-hand account, the origi
Externí odkaz:
http://arxiv.org/abs/2408.08735
Autor:
Gopal-Krishna
Publikováno v:
A&A 688, L16 (2024)
The fascination with the blazar OJ 287 stems not only from its status as a prominent candidate for a close supermassive black hole (SMBH) binary, but also because of the thermal bremsstrahlung origin proposed for its giant optical outbursts. These ou
Externí odkaz:
http://arxiv.org/abs/2407.09273
Positive integers with all digits equal are called repdigits. In this paper, we find all balancing and Lucas-balancing numbers, which can be expressed as the difference of two repdigits. The method of proof involves the application of Baker's theory
Externí odkaz:
http://arxiv.org/abs/2405.15839
Repdigits are natural numbers formed by the repetition of a single digit. In this paper, we study the problem of writing repdigits as the difference of two balancing or Lucas-balancing numbers. The method of proof involves the application of Baker's
Externí odkaz:
http://arxiv.org/abs/2405.04801
From a careful visual scrutiny of the radio structures of a well-defined sample of 2428 sources in the LoTSS DR2 survey made at 144 MHz with a 6" beam, we have selected a subset of 25 (i.e., 1%) sources showing highly unusual radio structures, not co
Externí odkaz:
http://arxiv.org/abs/2403.11290
Autor:
Gopal-Krishna, Wiita, Paul
The issue of radiation mechanisms had triggered in 1950-60s the first applications of plasma physics to understand the nature of radio galaxies. This interplay has steadily intensified during the past five decades, due to the premise of in-situ accel
Externí odkaz:
http://arxiv.org/abs/2401.05595
Autor:
Yogamaya Pradhan, Gunjan Srivastava, Gopal Krishna Choudhury, Pradyumna Kumar Sahoo, Subrat Kumar Padhiary
Publikováno v:
The Journal of Indian Prosthodontic Society, Vol 24, Iss 4, Pp 320-328 (2024)
Objective: A comparative study undertaken to measure the the marginal bone loss (MBL), implant survival rate, and prosthetic and biological complications among short implants (8 mm or shorter) and conventional implants (longer than 8 mm) in the poste
Externí odkaz:
https://doaj.org/article/5d12b059318549e4bfb9d750d91b8b72
