Abstract
We present the calculation of longitudinal electrical conductivity in magnetized plasma considering dynamical screening in the context of binary neutron star mergers. We consider strongly ...quantizing domain for significant modification in the transport coefficient due to magnetic field. Boltzmann equation is solved to obtain dissipative component of the electrical conductivity tensor in presence of magnetic field. The longitudinal electrical conductivity is formulated considering dynamically screened medium with magnetically modified screening. Numerical evaluations show that the effect of screening on electrical conductivity is less whereas inclusion of dynamical screening results in profound modification. Dynamical screening reduces electrical conductivity leading to a reduction in relevant magnetic field decay time scale.
Jet quenching in expanding medium Adhya, S P; Salgado, C A; Spousta, M ...
Physica scripta,
01/2021, Letnik:
96, Številka:
1
Journal Article
Recenzirano
Comprehensive understanding of medium-induced radiative energy loss is of a paramount importance in describing observed jet quenching in heavy-ion collisions. In this work, we have calculated the ...medium-modified gluon splitting rates for different profiles of the expanding partonic medium, namely profiles for static, exponential, and Bjorken expanding medium. Here in this study, we have used the Baier-Dokshitzer-Mueller-Peigne-Schiff-Zakharov (BDMPSZ) formalism is used for multiple soft scatterings with a time-dependent transport coefficient for characterizing the expanding medium. Using the kinetic rate equation, we have numerically evaluated the distribution of the medium evolved gluon spectra for different medium profiles. We have presented a calculation of the jet QAA which quantifies a sensitivity of the inclusive jet suppression on the way how the medium expands. Comparisons of predicted jet QAA with experimental data from the LHC are also presented.
A state-wise assessment of methane (CH
4) budget for Indian paddies, based on a decadal measurement data across India is presented for the calendar year (CY) 1994, the base year for India’s Initial ...National Communication (NATCOM) to the United Nations Framework Convention on Climate Change (UNFCCC), along with national trend from CY 1979 to 2006. The NATCOM CH
4 emission factors (EFs) for Indian paddy cultivation areas, generally having less than 0.7% of soil organic carbon (SOC), have been estimated as 17.48
±
4
g
m
−2 for irrigated continuously flooded (IR-CF), 6.95
±
1.86
g
m
−2 for rain-fed drought prone (RF-DP), 19
±
6
g
m
−2 for rain-fed flood prone (RF-FP) and deep-water (DW), 6.62
±
1.89
g
m
−2 for irrigated intermittently flooded single aeration (IR-IF-SA) and 2.01
±
1.49
g
m
−2 for IR-IF multiple aeration (MA) paddy water regimes. The state-wise study for 1994 has indicated national CH
4 budget estimate of 4.09
±
1.19 Tg
y
−1 and the trend from 1979 to 2006 was in the range of 3.62
±
1 to 4.09
±
1.19 Tg
y
−1. Four higher emitting or “hot spot” states (West Bengal, Bihar, Madhya Pradesh and Uttar Pradesh) have accounted for 53.9% of total CH
4 emission with RF-FP paddy water regime as the major contributor. CH
4 emissions were enhanced by factors such as SOC (∼1.5 times due to increase in SOC by ∼1.8 times), paddy cultivars (∼1.5 times), age of seedlings (∼1.4 times), and seasons (∼1.8 times in Kharif or monsoon than in Rabi or winter season).
In this work we calculate the pulsar kick velocity of a magnetized neutron star (NS) composed of a degenerate quark matter core with non-Fermi liquid (NFL) correction. Both the leading order (LO) and ...next to LO (NLO) corrections to the kick velocity have been incorporated. In addition, the NFL corrections to the specific heat of magnetized quark matter have been presented. This has been taken into account to calculate the kick velocity of the NS. The results show a significant departure from the normal Fermi liquid estimates. The relation between radius and temperature has been shown with a kick velocity of 100 km s−1 with and without NFL corrections.
Multiplicity dependence of Acharya, S; Adamová, D; Adhya, S. P ...
The European physical journal. C, Particles and fields,
02/2020, Letnik:
80, Številka:
2
Journal Article
Recenzirano
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity ( Formula omitted) are measured in proton-proton collisions at Formula omitted = 13 TeV as a function ...of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of Formula omitted, Formula omitted, Formula omitted, and Formula omitted increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Measurement of [Formula omitted] Acharya, S; Adamová, D; Adhya, S. P ...
The European physical journal. C, Particles and fields,
02/2020, Letnik:
80, Številka:
2
Journal Article
Recenzirano
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
The production of the Formula omitted(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at Formula omitted and in p-Pb collisions at Formula omitted for non-single ...diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Formula omitted(1520) Formula omitted and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p-Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons ( Formula omitted, K, Formula omitted, p, Formula omitted) describes the shape of the Formula omitted(1520) transverse momentum distribution up to Formula omitted in p-Pb collisions. In the framework of this model, this observation suggests that the Formula omitted(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Formula omitted to the yield of the ground state particle Formula omitted remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p-Pb collisions on the Formula omitted(1520) yield.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Display omitted
► GWP were highest in rice straw+green manure treatment. ► The labile carbon pools were highest in rice straw+green manure treatment. ► Combined application of rice straw+urea was the ...most adoptable. ► Urea as single application had low capacity of carbon storage.
Effects of four years of inorganic and organic nitrogen (N) management on the emission of three major greenhouse gases (GHGs): methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O), and on soil labile carbon fractions such as water-soluble carbon (C, WSC), microbial biomass carbon (MBC), KMnO4 oxidizable organic carbon (KMnO4-C), carbon management index (CMI) and soil carbon storage were investigated in a flooded rice (Oryza sativa L.) field in India. The treatments included an unfertilized control, inorganic nitrogen fertilizer, rice straw+inorganic nitrogen fertilizer and rice straw+green manure. Maximum global warming potential (GWP) (10,188kgCO2equivalent ha−1) was determined for the combined application of rice straw and green manure. Total carbon content and carbon storage in the topsoil were significantly increased for the rice straw+inorganic nitrogen fertilizer treatment. The combined application of rice straw and green manure was more effective in increasing WSC, MBC, KMnO4-C concentrations and CMI than the inorganic fertilizer treatments, although it increased gaseous carbon emission. The combined application of rice straw and an inorganic fertilizer was most effective in sequestrating soil organic carbon (1.39Mgha−1), resulting in a higher grain yield. Therefore, it could be the best option for improving productivity and carbon storage in the rice–rice cropping system.
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