20 citations · 65 across the 9 of their papers we have counts for
9 papers
Galactic molecular clouds as sources of secondary positrons
Agnibha De Sarkar, Sayan Biswas, Nayantara Gupta
Secondary positrons produced inside Galactic Molecular Clouds (GMCs) can significantly contribute to the observed positron spectrum on Earth. Multi-wavelength data of GMCs are part…
Positron Excess from Cosmic Ray Interactions in Galactic Molecular Clouds
Agnibha De Sarkar, Sayan Biswas, Nayantara Gupta
The recently observed data by AMS-02 clearly confirms that the positron flux rises with energy and shows a peak near a few hundred GeV. This rising positron flux cannot be explaine…
Multiwavelength analysis of low surface brightness galaxies to study possible dark matter signature
Pooja Bhattacharjee, Pratik Majumdar, Mousumi Das +3
Low Surface Brightness (LSB) galaxies have very diffuse, low surface density stellar disks which appear faint in optical images. They are very rich in neutral hydrogen (HI) gas, wh…
Galactic Gamma Ray Background from Interactions of Cosmic Rays
Sayan Biswas, Nayantara Gupta
Various studies firmly establish the fact that gamma-ray observations can act as a unique probe to detect the possible cosmic ray (CR) sources, study the CR density distribution an…
Analysis of Fermi-LAT data from Tucana-II: Possible constraints on the Dark Matter models with an intriguing hint of a signal
Pooja Bhattacharjee, Pratik Majumdar, Sayan Biswas +1
Tucana-II (Tuc-II), a recently discovered and confirmed Ultra Faint Dwarf Spheroidal galaxy, has a high mass to light ratio as well as a large line-of-sight stellar velocity disper…
Constraining the halo size from possible density profiles of hydrogen gas of Milky Way Galaxy
Sayan Biswas, Nayantara Gupta
Galactic magnetic field (GMF) and secondary cosmic rays (CRs) (e.g. beryllium, boron, antiproton) are important components to understand the propagation of CRs in the Milky…
Constraints on dark matter models from the observation of Triangulum-II with the Fermi Large Area Telescope
Sayan Biswas, Pooja Bhattacharjee, Pratik Majumdar +3
Triangulum-II, a newly discovered dwarf spheroidal galaxy, is a strong candidate for the indirect search of dark matter through the detection of -ray emission that could origina…
Multifragmentation model for the production of astrophysical strangelets
Sayan Biswas, J. N. De, Partha S. Joarder +2
Determination of baryon number (or mass) distribution of the strangelets, that may fragment out of the warm and excited strange quark matter ejected in the merger of strange stars…
Disassembly model for the production of astrophysical strangelets
Sayan Biswas, J. N. De, Partha S. Joarder +2
Determination of the baryon number (or mass) distribution of the strangelets, that may fragment out of the warm and excited strange quark matter (SQM) ejected in the merger of stra…