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View article: Predictive Structural Health Monitoring for Large Bridges Using Sensors
Predictive Structural Health Monitoring for Large Bridges Using Sensors Open
View article: Study of Atmospheric Variables using Low-Cost Stratospheric Balloon-Borne Missions
Study of Atmospheric Variables using Low-Cost Stratospheric Balloon-Borne Missions Open
A better understanding of atmospheric dynamics and improvement of regional weather and climate models require accurate measurement and analysis of atmospheric variables such as temperature, pressure, and wind velocity across altitudes. In …
View article: Machine learning applications in predicting structural failures and earthquake damage
Machine learning applications in predicting structural failures and earthquake damage Open
View article: Modeling of the Variability of D‐Region Ionospheric Electron Density During Solar Cycle‐24
Modeling of the Variability of D‐Region Ionospheric Electron Density During Solar Cycle‐24 Open
Solar cycle variation of earth's atmosphere, particularly the ionosphere is of particular interest in the field of space science and space weather studies. In this article, we present the outcome of our detailed quantitative study on solar…
View article: Development of a Compton Imager Setup
Development of a Compton Imager Setup Open
Hard X-ray photons with energies in the range of hundreds of keV typically undergo Compton scattering when they are incident on a detector. In this process, an incident photon deposits a fraction of its energy at the point of incidence and…
View article: A Heavy Ion Monitor on a Chip Based on a Non-Volatile Memory Architecture
A Heavy Ion Monitor on a Chip Based on a Non-Volatile Memory Architecture Open
The performance of a particle detector derived from nitride read-only memory (NROM) technology is evaluated, with immediate applications in space-based heavy ion radiation monitoring and detection. Irradiation exposures are performed using…
View article: Prospects of measuring Gamma-ray Burst Polarisation with the Daksha mission
Prospects of measuring Gamma-ray Burst Polarisation with the Daksha mission Open
The proposed Daksha mission comprises of a pair of highly sensitive space telescopes for detecting and characterising high-energy transients such as electromagnetic counterparts of gravitational wave events and gamma-ray bursts (GRBs). Alo…
View article: Science with the Daksha High Energy Transients Mission
Science with the Daksha High Energy Transients Mission Open
We present the science case for the proposed Daksha high energy transients mission. Daksha will comprise of two satellites covering the entire sky from 1~keV to $>1$~MeV. The primary objectives of the mission are to discover and characteri…
View article: Daksha: On Alert for High Energy Transients
Daksha: On Alert for High Energy Transients Open
We present Daksha, a proposed high energy transients mission for the study of electromagnetic counterparts of gravitational wave sources, and gamma ray bursts. Daksha will comprise of two satellites in low earth equatorial orbits, on oppos…
View article: Gravitational waves and electromagnetic transients
Gravitational waves and electromagnetic transients Open
View article: Sub-MeV spectroscopy with AstroSat-CZT imager for gamma ray bursts
Sub-MeV spectroscopy with AstroSat-CZT imager for gamma ray bursts Open
View article: Revisiting the Earth's atmospheric scattering of X-ray/$γ$-rays and its effect on space observation: Implication for GRB spectral analysis
Revisiting the Earth's atmospheric scattering of X-ray/$γ$-rays and its effect on space observation: Implication for GRB spectral analysis Open
A considerable fraction of incident high-energy photons from astrophysical transients such as Gamma-Ray Bursts (GRBs) is Compton scattered by the Earth's atmosphere. These photons, sometimes referred to as the "reflection component", contr…
View article: Revisiting the Earth's atmospheric scattering of X-ray/$\gamma$-rays and its effect on space observation: Implication for GRB spectral analysis
Revisiting the Earth's atmospheric scattering of X-ray/$\gamma$-rays and its effect on space observation: Implication for GRB spectral analysis Open
A considerable fraction of incident high-energy photons from astrophysical transients such as Gamma-Ray Bursts (GRBs) is Compton scattered by the Earth's atmosphere. These photons, sometimes referred to as the "reflection component", contr…
View article: Response of Earth's Upper Atmosphere and VLF Propagation to Celestial X‐Ray Ionization: Investigation With Monte Carlo Simulation and Long Wave Propagation Capability code
Response of Earth's Upper Atmosphere and VLF Propagation to Celestial X‐Ray Ionization: Investigation With Monte Carlo Simulation and Long Wave Propagation Capability code Open
Ionization of Earth's upper atmosphere by celestial and terrestrial sources of radiation is the driver of most of the significant physical and chemical evolution distributed over a large range of timescales. Part of the atmosphere, called …
View article: Lower Ionospheric Plasma‐Chemical Evolution and VLF Signal Modulation by a Series of SGR X‐Ray Bursts: Numerical Simulation With an Ion‐Chemistry Model
Lower Ionospheric Plasma‐Chemical Evolution and VLF Signal Modulation by a Series of SGR X‐Ray Bursts: Numerical Simulation With an Ion‐Chemistry Model Open
The X‐ray and gamma ray radiation from astrophysical transient sources, like X‐ray bursts from soft gamma repeaters (SGRs) and gamma ray bursts (GRBs), can affect the plasma properties of the lower ionosphere and middle atmosphere. Multipl…
View article: An investigation of collimator head scatter with columnar miniphantom
An investigation of collimator head scatter with columnar miniphantom Open
View article: Modeling of long‐path propagation characteristics of VLF radio waves as observed from Indian Antarctic station Maitri
Modeling of long‐path propagation characteristics of VLF radio waves as observed from Indian Antarctic station Maitri Open
Propagation of very low frequency (VLF) radio signal through the Earth‐ionosphere waveguide depends strongly on the plasma properties of the ionospheric D layer. Solar extreme ultraviolet radiation plays the central role in controlling phy…