94 citations
- Indian Institute of Science BangaloreIN4 papers
- National Radio Astronomy ObservatoryUS3 papers
- National Centre for Radio AstrophysicsIN2 papers
- Akdeniz UniversityTR1 paper
- Astronomy and SpaceAU1 paper
- Cardiff UniversityGB1 paper
- Centre National de la Recherche ScientifiqueFR1 paper
- Chennai Mathematical InstituteIN1 paper
- Columbia UniversityUS1 paper
- Commonwealth Scientific and Industrial Research OrganisationAU1 paper
- Cornell UniversityUS1 paper
- Indian Institute of Technology BombayIN1 paper
11 papers · 1 filter
Energy, entropy and the Ricci flow
Joseph Samuel, Sutirtha Roy Chowdhury
The Ricci flow is a heat equation for metrics, which has recently been used to study the topology of closed three manifolds. In this paper we apply Ricci flow techniques to general…
Causal Set Topology
Sumati Surya
The Causal Set Theory (CST) approach to quantum gravity is motivated by the observation that, associated with any causal spacetime (M,g) is a poset (M,<), with the order relation <…
Geometric flows and black hole entropy
Joseph Samuel, Sutirtha Roy Chowdhury
Perelman has given a gradient formulation for the Ricci flow, introducing an ``entropy function'' which increases monotonically along the flow.We pursue a thermodynamic analogy and…
Higher harmonics increase LISA's mass reach for supermassive black holes
K. G. Arun, Bala R. Iyer, B. S. Sathyaprakash +1
Current expectations on the signal to noise ratios and masses of supermassive black holes which the Laser Interferometer Space Antenna (LISA) can observe are based on using in matc…
A search for HI 21cm absorption toward the highest redshift radio loud objects
C. L. Carilli, Ran Wang, M. van Hoven +3
We have searched for HI 21cm absorption toward the two brightest radio AGN at high redshift, J0924--2201 at , and J0913+5919 at , using the Giant Meter Wave Radio…
Spatial and Kinematical Lopsidedness of Atomic Hydrogen in the Ursa Major Group of Galaxies
R. A. Angiras, C. J. Jog, K. S. Dwarakanath +1
We have carried out the harmonic analysis of the atomic hydrogen (HI) surface density maps and the velocity fields for 11 galaxies belonging to the Ursa Major group, over a radial…