177 citations
- S.N. Bose National Centre for Basic SciencesIN143 papers
- Physical Research LaboratoryIN24 papers
- Indian Institute of AstrophysicsIN18 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIT17 papers
- Centre National de la Recherche ScientifiqueFR16 papers
- Tata Institute of Fundamental ResearchIN15 papers
- Indian Space Research OrganisationIN14 papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT14 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BariIT14 papers
- National Research Nuclear University MEPhIRU13 papers
- University of TriesteIT13 papers
- Laboratoire d'Astrophysique de BordeauxFR11 papers
7 papers · 2 filters
Spectrum of two component flows around a super-massive black hole: an application to M87
Samir Mandal, Sandip K. Chakrabarti
We calculate the spectra of two-component accretion flows around black holes of various masses, from quasars to nano-quasars. Specifically, we fit the observational data of M87 ver…
Evolution of the quasi-periodic oscillation frequency in GRO J1655-40 -- Implications for accretion disk dynamics
Sandip K. Chakrabarti, Dipak Debnath, Anuj Nandi +1
Low and intermediate frequency quasi-periodic oscillations (QPOs) are thought to be due to oscillations of Comptonizing regions or hot blobs embedded in Keplerian disks. Any moveme…
Formation of water and methanol in star forming molecular clouds
Ankan Das, Kinsuk Acharyya, Sonali Chakrabarti +1
We study the formation of water and methanol in the dense cloud conditions to find the dependence of its production rate on the binding energies, reaction mechanisms, temperatures,…
Recombination Efficiency of Molecular Hydrogen on Interstellar Grains-II A Numerical Study
Sandip Kumar Chakrabarti, Ankan Das, Kinsuk Acharyya +1
A knowledge of the recombination time on the grain surfaces has been a major obstacle in deciding the production rate of molecular hydrogen and other molecules in the interstellar…
Time evolution of simple molecules during proto-star collapse
Ankan Das, Sandip Kumar Chakrabarti, Kinsuk Acharyya +1
We study the formation and evolution of several molecules in a collapsing interstellar cloud using a reasonably large reaction network containing more then four hundred atomic and…
Effective grain surface area in the formation of molecular hydrogen in interstellar clouds
Sandip Kumar Chakrabarti, Ankan Das, Kinsuk Acharyya +1
In the interstellar clouds, molecular hydrogens are formed from atomic hydrogen on grain surfaces. An atomic hydrogen hops around till it finds another one with which it combines.…