32 citations · 127 across the 9 of their papers we have counts for
9 papers
Unraveling the Emission Mechanism of the HBL Source Mrk 180 with Multi-Wavelength Data
Sandeep Kumar Mondal, Saikat Das, Nayantara Gupta
Markarian (Mrk) 180 is a High frequency-peaked BL Lacertae object or HBL object, located at a redshift of 0.045 and a potential candidate for high-energy cosmic ray acceleration. I…
Observation of charge-to-spin conversion with giant efficiency at NiFe/BiWO interface
Saikat Das, Satoshi Sugimoto, Varun Kumar Kushwaha +2
Magnetization switching using spin-orbit torque offers a promising route to developing non-volatile memory technologies. The prerequisite, however, is the charge-to-spin current co…
Chaotic dynamics of off-equatorial orbits around pseudo-Newtonian compact objects with dipolar halos
Saikat Das, Suparna Roychowdhury
In this paper, we implement a generalised pseudo-Newtonian potential to study the off-equatorial orbits inclined at a certain angle with the equatorial plane around Schwarzschild a…
Revisiting ultrahigh-energy constraints on decaying super-heavy dark matter
Saikat Das, Kohta Murase, Toshihiro Fujii
We revisit constraints on decaying very heavy dark matter (VHDM) using the latest ultrahigh-energy cosmic-ray (UHECR; eV) data and ultrahigh-energy (UHE) -ray…
Dissecting the broadband emission from γ-ray blazar PKS 0735+178 in search of neutrinos
Raj Prince, Saikat Das, Nayantara Gupta +2
The origin of the diffuse flux of TeV-PeV astrophysical neutrinos is still unknown. The -ray blazar PKS 0735+178, located outside the 90\% localization region at 2.2 deg from th…
Exploring the Emission Mechanisms of Mrk 180 with long term X-ray and -ray data
Sandeep Kumar Mondal, Saikat Das, Nayantara Gupta
Markarian (Mrk) 180 is a BL Lacertae (BL Lac) object located at a redshift of 0.045 and a potential candidate for high-energy cosmic ray acceleration. We have analyzed the Fermi La…
Ultrahigh-energy cosmic-ray signature in GRB 221009A
Saikat Das, Soebur Razzaque
The brightest long gamma-ray burst detected so far by the Swift-BAT and Fermi-GBM telescopes, GRB~221009A, provides an unprecedented opportunity for understanding the high-energy p…
Implications of multiwavelength spectrum on cosmic-ray acceleration in blazar TXS 0506+056
Saikat Das, Nayantara Gupta, Soebur Razzaque
MAGIC collaboration has recently analyzed data from a long-term multiwavelength campaign of the -ray blazar TXS 0506+056. In December 2018, it was flaring in the very-high-energ…
Cosmogenic gamma-ray and neutrino fluxes from blazars associated with IceCube events
Saikat Das, Soebur Razzaque, Nayantara Gupta
Blazars constitute the vast majority of extragalactic -ray sources. They can also contribute a sizable fraction of the diffuse astrophysical neutrinos detected by IceCube. In th…