Sibaji Raha
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View article: Bioinformatic Identification of a Six-Gene Biomarker Signature for Prognostic and Diagnostic Insight in Glioblastoma
Bioinformatic Identification of a Six-Gene Biomarker Signature for Prognostic and Diagnostic Insight in Glioblastoma Open
Glioblastoma (GBM) is an aggressive type of brain tumor with a poor prognosis. This study aimed to identify key hub genes as potential prognostic biomarkers for GBM treatment, using the R package limma, we analyzed the GSE50161, GSE4290, G…
View article: Jet modification in absence of QGP-medium: the role of multiparton interactions and color reconnection*
Jet modification in absence of QGP-medium: the role of multiparton interactions and color reconnection* Open
Recent studies on high-multiplicity events in small collision systems (proton-proton and proton-lead) have drawn considerable research interest toward the possibility of the formation of partonic medium in such systems. One of the importan…
View article: Observation of variation in gamma-ray flux during the total solar eclipse at Siliguri (India) after developing a RooFit-based model
Observation of variation in gamma-ray flux during the total solar eclipse at Siliguri (India) after developing a RooFit-based model Open
The variability in γ-ray flux observed during total solar eclipses holds significant scientific interest. For our study, we employed two large-volume sodium iodide detectors to measure the γ-ray flux before, during, and after the "eclipse …
View article: Jet modification in absence of QGP-medium: the role of multiparton interactions and color reconnection
Jet modification in absence of QGP-medium: the role of multiparton interactions and color reconnection Open
Recent studies of high-multiplicity events in small collision systems (proton-proton and proton-lead) have drawn research interest towards the possibility of the formation of partonic medium in such systems. One of the important consequenc…
View article: Interplay between eclipses and soft cosmic rays
Interplay between eclipses and soft cosmic rays Open
Astronomical events such as Solar and Lunar eclipses provide the opportunity for studying the disturbance produced in the atmosphere by these events and their effect on cosmic ray intensity. There are earlier reports on decrease in seconda…
View article: Long term stability study of triple GEM detector using different Argon based gas mixtures: an update
Long term stability study of triple GEM detector using different Argon based gas mixtures: an update Open
The long-term stability in terms of gain and energy resolution of a prototype triple Gas Electron Multiplier (GEM) detector has been investigated with high rate X-ray irradiation. Premixed Ar/CO2 (80:20) and (90:10) gases have been used fo…
View article: Chandrasekhar limit for rotating quark stars
Chandrasekhar limit for rotating quark stars Open
The limiting mass is a significant characteristic for compact exotic stars. In the case of quark stars, the limiting mass can be expressed in terms of fundamental constants and the Bag constant. In the present work, using bag model descrip…
View article: Finite temperature properties of a modified Polyakov–Nambu–Jona-Lasinio model
Finite temperature properties of a modified Polyakov–Nambu–Jona-Lasinio model Open
Thermodynamic properties of strongly interacting matter are investigated using the Polyakov loop enhanced Nambu$-$Jona-Lasinio model along with some modifications to include the hadrons. Various observables are shown to have a close agreem…
View article: Long term stability study of triple GEM detector using different Argon based gas mixtures: an update
Long term stability study of triple GEM detector using different Argon based gas mixtures: an update Open
The long-term stability in terms of gain and energy resolution of a prototype triple Gas Electron Multiplier (GEM) detector has been investigated with high rate X-ray irradiation. Premixed Ar/CO 2 (80:20) and (90:10) gases have been used f…
View article: Dynamic response of light absorption by PM2.5 bound water-soluble organic carbon to heterogeneous oxidation
Dynamic response of light absorption by PM2.5 bound water-soluble organic carbon to heterogeneous oxidation Open
Along with greenhouse gases, worldwide biomass-burning events add substantial amounts of a complex optical system consisting of elemental carbon and organic particulate matter to the atmosphere. These particulate matters significantly affe…
View article: Convolution based hybrid image processing technique for microscopic\n images of etch-pits in Nuclear Track Detectors
Convolution based hybrid image processing technique for microscopic\n images of etch-pits in Nuclear Track Detectors Open
A novel image processing technique based on convolution is developed for\nanalyzing the etch-pit images in Nuclear Track Detectors (NTDs). The outcomes\nof the application of the proposed method on the different types of NTDs (e.g.,\nCR-39…
View article: Cosmic ray detection and Identification at Antarctica in a ground level experiment with NTD
Cosmic ray detection and Identification at Antarctica in a ground level experiment with NTD Open
Searching for Strangelets (small pieces of strongly interacting matter comprising of nearly equal numbers of u, d and s quarks) in cosmic rays, an experiment has been done at Antarctica using passive detectors. We have exposed CR-39 and PE…
View article: Empirical relationship between detection thresholds and physical parameters of different Nuclear Track Detectors
Empirical relationship between detection thresholds and physical parameters of different Nuclear Track Detectors Open
Summary: The relationship between different physical parameters of various polymers (e.g., CR-39, Lexan, and PET) used as Nuclear Track Detectors (NTDs) and their intrinsic detection thresholds were investigated. A strong correlation was f…
View article: Thermodynamics of strongly interacting matter in a hybrid model
Thermodynamics of strongly interacting matter in a hybrid model Open
The equation of state and fluctuations of conserved charges in a strongly interacting medium under equilibrium conditions form the baseline upon which various possible scenarios in relativistic heavy-ion collision experiments are built. Ma…
View article: Size-specific PAHs and Associated Health Risks over a Tropical Urban Metropolis: Role of Long-range Transport and Meteorology
Size-specific PAHs and Associated Health Risks over a Tropical Urban Metropolis: Role of Long-range Transport and Meteorology Open
The polycyclic aromatic hydrocarbons (PAHs) are considered as an important class of organic pollutants in the urban atmosphere to pose serious health hazards. A comprehensive study was conducted during the dry seasons of 2017–2018 to under…
View article: Speeding up of Binary Merger Due to "Apparent" Gravitational Wave Emissions
Speeding up of Binary Merger Due to "Apparent" Gravitational Wave Emissions Open
Gravitational waves from binary black hole pairs have emerged as an important observational tool in current times. The energy of the BH - BH binary pair is radiated in the form of gravitational waves and to compensate for that energy, kine…
View article: Impact of Biomass Burning Plumes on the Size-Segregated Aerosol Chemistry over an Urban Atmosphere at Indo-Gangetic Plain
Impact of Biomass Burning Plumes on the Size-Segregated Aerosol Chemistry over an Urban Atmosphere at Indo-Gangetic Plain Open
A study was conducted on the impact of biomass burning plumes transported from the Eastern Ghats region on the chemical characteristics of size-segregated aerosols over Kolkata, a tropical megacity situated in the eastern part of the Indo-…
View article: Study of stability of gain and energy resolution for GEM detector in high rate operation
Study of stability of gain and energy resolution for GEM detector in high rate operation Open
Study of the stability of gain and energy resolution for a triple GEM detector has been performed under continuous radiation of X-ray with high rate, using premixed gas of Argon and CO$_2$ in 70/30 ratio and conventional NIM electronics. A…
View article: Study of stability of gain and energy resolution for GEM detector in high rate operation
Study of stability of gain and energy resolution for GEM detector in high rate operation Open
Study of the stability of gain and energy resolution for a triple GEM detector has been performed under continuous radiation of X-ray with high rate, using premixed gas of Argon and CO$_2$ in 70/30 ratio and conventional NIM electronics. A…
View article: Was the cosmic ray burst detected by the GRAPES-3 on 22 June 2015 caused by transient weakening of geomagnetic field or by an interplanetary anisotropy?
Was the cosmic ray burst detected by the GRAPES-3 on 22 June 2015 caused by transient weakening of geomagnetic field or by an interplanetary anisotropy? Open
The GRAPES-3 muon telescope in Ooty, India had claimed detection of a 2 hour (h) high-energy ($\sim$20 GeV) burst of galactic cosmic-rays (GCRs) through a $>$50$σ$ surge in GeV muons, was caused by reconnection of the interplanetary magnet…
View article: Biosphere Atmosphere Exchange of CO2, H2O Vapour and Energy during Spring over a High Altitude Himalayan Forest in Eastern India
Biosphere Atmosphere Exchange of CO2, H2O Vapour and Energy during Spring over a High Altitude Himalayan Forest in Eastern India Open
For the first time, the exchange of greenhouse gases, such as CO2 and H2O vapour, between the biosphere and the atmosphere at an eastern Himalayan site in India has been investigated. This study was carried out over a high altitude (2286 m…
View article: Pitfall in etch-pit calculation
Pitfall in etch-pit calculation Open
Two widely used methods for computing the reduced etch rate from the etch-pit geometry in nuclear track detectors (NTDs) have been compared. The shape of the etch-pit is usually assumed to be conical. In this paper, the validity of that as…
View article: Studies of the effect of rate on gain for straw tube detector
Studies of the effect of rate on gain for straw tube detector Open
Basic R & D have been carried out with one small straw tube detector prototype with premixed gas of Ar+CO2 in 70:30 and 90:10 ratio. The gain and the energy resolution are measured with Fe55 X-ray source. Effect of temperature and pressure…