M. K. Singh

ORCID: 0000-0001-8081-4888
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Research Areas
  • Pulsars and Gravitational Waves Research
  • Gamma-ray bursts and supernovae
  • Cosmology and Gravitation Theories
  • Nuclear physics research studies
  • Geophysics and Gravity Measurements
  • Astrophysical Phenomena and Observations
  • Nuclear Physics and Applications
  • Astronomical and nuclear sciences
  • High-pressure geophysics and materials
  • Radio Astronomy Observations and Technology
  • Nuclear reactor physics and engineering
  • Astrophysics and Cosmic Phenomena
  • Fractional Differential Equations Solutions
  • Neutrino Physics Research
  • Dark Matter and Cosmic Phenomena
  • 2D Materials and Applications
  • Black Holes and Theoretical Physics
  • Iterative Methods for Nonlinear Equations
  • Atomic and Subatomic Physics Research
  • Radiation Detection and Scintillator Technologies
  • Infectious Diseases and Tuberculosis
  • Boron and Carbon Nanomaterials Research
  • Nanoparticles: synthesis and applications
  • Diagnosis and Treatment of Venous Diseases
  • Ultrasound in Clinical Applications

University of Tennessee at Knoxville
2019-2024

Tata Institute of Fundamental Research
2004-2024

International Centre for Theoretical Sciences
2020-2024

Indian Institute of Technology Bombay
2023-2024

Los Alamos National Laboratory
2024

Saint Mary's University
2021

University of Delhi
2016-2019

Shri Jagdishprasad Jhabarmal Tibrewala University
2016

King George's Medical University
2010

Banaras Hindu University
2010

In this paper, we introduce a modified analytical approximate technique to obtain solution of time fractional Sharma-Tasso-Olever equation. First, present an alternative framework the Residual power series method (RPSM) which can be used simply and effectively handle nonlinear differential equations arising in several physical phenomena. This is basically based on generalized Taylor formula residual error function. A good result found between our given solution. It shown that proposed...

10.5899/2016/cna-00235 article EN Communications in Numerical Analysis 2016-01-01

Photophysical properties and the rotational relaxation dynamics of a phenazine based dye, neutral red, have been investigated in aqueous solutions presence β-cyclodextrin (β-CD) using ground-state absorption steady-state time-resolved fluorescence measurements. It has observed that while form (NR) dye forms an inclusion complex with β-CD, its protonated (NRH+) does not. In β-CD (10 mM), pKa value is estimated to be about 6.06 ± 0.05, much lower than 6.81 0.05 measured solution. Both...

10.1021/jp035075e article EN The Journal of Physical Chemistry A 2004-01-30

Stroke is a devastating complication of tuberculous meningitis and an important determinant its outcome.To prospectively evaluate the predictive factors for stroke in patients with to assess impact on overall prognosis outcome.We evaluated followed 100 6 months. Magnetic resonance imaging was performed at inclusion after We predictors also assessed effect outcome. Outcome defined help modified Rankin scale.Of patients, lost follow-up. Thirty had stroke, 27 them inclusion. Three developed...

10.1093/qjmed/hcq103 article EN QJM 2010-06-29

In this paper we have presented the wave theory of big bang. On basis new cosmological theory, it will be helpful understanding various issues unanswered in existing theories origin universe like creation matter, antimatter, dark energy conservation, limitation speed light and nature medium before The concept given help concluding final shape universe. We also drawn some concepts correlations on expansion universe, force gravity magnetic permeability etc. paper, which may resolving wellknown...

10.22214/ijraset.2025.69348 article EN International Journal for Research in Applied Science and Engineering Technology 2025-04-25

With state-of-the-art density functional theory and ab initio molecular dynamics, we explored the BN-analog of a recently synthesized 2D biphenylene sheet. Its dynamical, thermal, mechanical stability has been confirmed with phonon spectrum calculations, dynamics (AIMD), Born criteria, its synthesis feasibility ascertained in terms cohesive energy. The AIMD results show all positive frequencies negligible variations structure (bond length), kinetic total energy for 5 ps, respectively. Having...

10.1039/d3cp00776f article EN Physical Chemistry Chemical Physics 2023-01-01

The first complete measurement of the β-decay strength distribution Cl281745 was performed at Facility for Rare Isotope Beams (FRIB) with FRIB Decay Station Initiator during second experiment. involved detection neutrons and γ rays in two focal planes a single experiment time. This enabled an analytical consistency extracting over large range excitation energies, including neutron unbound states. We observe rapid increase above separation energy Ar271845. interpreted to be caused by...

10.1103/physrevlett.132.152503 article EN Physical Review Letters 2024-04-12

Abstract The β -delayed neutron-emission probabilities of 28 exotic neutron-rich isotopes Pm, Sm, Eu, and Gd were measured for the first time at RIKEN Nishina Center using Advanced Implantation Detector Array (AIDA) BRIKEN neutron detector array. existing -decay half-life ( T 1/2 ) database was significantly increased toward more isotopes, uncertainties previously values decreased. new data not only constrain theoretical predictions half-lives probabilities, but also allow probing mechanisms...

10.3847/1538-4357/ac80fc article EN cc-by The Astrophysical Journal 2022-09-01

Abstract Premerger gravitational-wave (GW) sky localization of binary neutron star (BNS) and star–black hole (NSBH) coalescence events would enable telescopes to capture precursors electromagnetic (EM) emissions around the time merger. We propose an astrophysical scenario that could provide early-warning times hours days before with subarcsecond localization, provided these are gravitationally lensed. The key idea is if BNS/NSBH lensed, then so host galaxy identified via EM counterpart. From...

10.3847/2041-8213/acf668 article EN cc-by The Astrophysical Journal Letters 2023-09-27

A crucial component to maximizing the science gain from multi-messenger follow-up of gravitational-wave (GW) signals compact binary mergers is prompt discovery electromagnetic counterpart. Ideally, GW detection and localization must be reported early enough allow for telescopes slew location GW-event before onset However, time available warning limited by short duration spent dominant ($\ell = m 2$) mode within detector's frequency band. Nevertheless, we show that, including higher modes -...

10.3847/2041-8213/aba42d article EN The Astrophysical Journal Letters 2020-07-29

Abstract Templates modeling just the dominant mode of gravitational radiation are generally sufficient for unbiased parameter inference near-equal-mass compact binary mergers. However, neglecting subdominant modes can bias if is significantly asymmetric, very massive, or has misaligned spins. In this work, we explore these in estimation nonspinning black hole mergers their population-level properties such as mass and merger redshift distributions. Assuming design sensitivity advanced...

10.3847/1538-4357/ad499b article EN cc-by The Astrophysical Journal 2024-08-01

The β decays from both the ground state and a long-lived isomer of ^{133}In were studied at ISOLDE Decay Station (IDS). With hybrid detection system sensitive to β, γ, neutron spectroscopy, comparative partial half-lives (logft) have been measured for all their dominant β-decay channels first time, including low-energy Gamow-Teller transition several first-forbidden (FF) transitions. Uniquely such heavy neutron-rich nucleus, selectively populate only few isolated unbound states in ^{133}Sn....

10.1103/physrevlett.131.022501 article EN cc-by Physical Review Letters 2023-07-14

$\ensuremath{\beta}$-delayed one-neutron and two-neutron branching ratios $({P}_{1n}$ ${P}_{2n})$ have been measured in the decay of $A=84$ to 87 Ga isotopes at Radioactive-Isotope Beam Factory (RIBF) RIKEN Nishina Center using a high-efficiency array $^{3}\mathrm{He}$ neutron counters (BRIKEN). Two-neutron emission was observed $^{84,85,87}\mathrm{Ga}$ for first time were be ${P}_{2n}=1.6(2)%,1.3(2)%$, $10.2{(28)}_{\mathrm{stat}}{(5)}_{\mathrm{sys}}%$, respectively. One-neutron ratio...

10.1103/physrevc.100.031302 article EN publisher-specific-oa Physical review. C 2019-09-19

A gravitational-wave (GW) early-warning of a compact-binary coalescence event, with sufficiently tight localisation skymap, would allow telescopes to point in the direction potential electromagnetic counterpart before its onset. This will enable astronomers extract valuable information complex astrophysical phenomena triggered around time merger. Use higher-modes gravitational radiation, addition dominant mode typically used templated real-time searches, was recently shown produce...

10.1093/mnras/stab125 article EN Monthly Notices of the Royal Astronomical Society 2021-01-16

Abstract This paper emphasizes on finding the solution for a foam drainageequation using technique of modified homotopy analysis transform method (MHATM). MHATM is new amalgamation and Laplace with polynomial. Comparisons are made between results proposed different values fractional derivative α exact solutions. Then, we analyze by numerical simulations, which demonstrate simplicity effectiveness present method.

10.1515/nleng-2016-0014 article EN Nonlinear Engineering 2016-01-01

Reactions on the proton-rich nuclides drive nucleosynthesis in Core-Collapse Supernovae (CCSNe) and X-ray bursts (XRBs). CCSNe eject products to interstellar medium hence are a potential inventory of p-nuclei, whereas XRBs powers light curves. In both astrophysical sites Ni-Cu cycle, which features competition between $^{59}$Cu(p,$\alpha$)$^{56}$Ni $^{59}$Cu(p,$\gamma$)$^{60}$Zn, could potentially halt production heavier elements. Here, we report first direct measurement using re-accelerated...

10.1103/physrevc.104.l042801 article EN Physical review. C 2021-10-28

The authors report a 6-year-old boy, who had presented with low-grade fever, altered sensorium, headache and seizure for 5 days. On examination, he features of raised intracranial pressure left VI cranial-nerve palsy bilateral extensor plantar response. CT scan showed multiple calcifications in cerebral cortex. MRI cranium cysts involving whole the brain. He was diagnosed as having cysticercal encephalitis, based on immunological imaging study. managed 20% mannitol, phenytoin albendazole,...

10.1136/bcr.05.2009.1837 article EN BMJ Case Reports 2010-10-21

The pre-merger (early-warning) gravitational-wave (GW) detection and localization of a compact binary merger would enable astronomers to capture potential electromagnetic (EM) emissions around the time merger, thus shedding light on complex physics merger. While early sky are primary importance multimessenger follow-up event, improved estimates luminosity distance orbital inclination could also provide insights observability EM emission. In this work, we demonstrate that inclusion higher...

10.1093/mnras/stac852 article EN Monthly Notices of the Royal Astronomical Society 2022-03-25

The system of gas dynamic equations governing the motion one-dimensional unsteady adiabatic flow a perfect in planer, cylindrical and spherical symmetry is solved successfully by applying Adomian decomposition method under exponential initial conditions.The solution equation computed up to five components series.The variation approximate velocity, density pressure fluid with position time studied.It found that there exists discontinuity or shock wave distribution variables.The convergent for...

10.12732/ijam.v29i6.8 article EN International Journal of Apllied Mathematics 2016-11-24

ABSTRACT The origin of fast radio bursts (FRBs) is currently an open question with several proposed sources and corresponding mechanisms for their production. Among them are compact binary coalescences (CBCs) that also generate gravitational waves (GWs). Spatial temporal coincidences between GWs FRBs have so far been used to search potential FRB counterparts from CBCs. However, such methods suffer relatively poor sky-localization the GW sources, similarly luminosity distance estimates both...

10.1093/mnras/stad3376 article EN cc-by Monthly Notices of the Royal Astronomical Society 2023-11-03

β-delayed γ-neutron spectroscopy has been performed on the decay of A=84 to 87 gallium isotopes at RI-beam Factory RIKEN Nishina Center using a high-efficiency array 3He neutron counters (BRIKEN). β−2n−γ events were measured in decays all four for first time, which is direct evidence populating excited states two-neutron daughter nuclei. Detailed schemes with γ branching ratios obtained these isotopes, and emission probabilities (Pxn) updated from previous study. Hauser-Feshbach statistical...

10.1103/physrevc.108.064307 article EN Physical review. C 2023-12-08
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