نتایج جستجو برای: sim5
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In this paper, we report on the hard X-ray observation of pulsar 1E 1145.1-6141 performed with Nuclear Spectroscopic Telescope Array mission (NuSTAR). The coherent pulsation source a period $\sim296.653\;\pm\;0.021\;s $ is detected. may be in equilibrium phase, according to most recent measurements its pulse period. profile reveals mild energy dependence and generally hints at pencil-beam patte...
The Hubble tension seems to be a crisis with $\sim5\sigma$ discrepancy between the most recent local distance ladder measurement from type Ia supernovae calibrated by Cepheids and global fitting constraint cosmic microwave background data. To narrow down possible late-time solutions tension, we have used in study [Phys. Rev. D 105, L021301 (2022)] an improved inverse method absolute measurement...
The optical depth $\tau$ is the least well determined parameter in standard model of cosmology, and one whose precise value important for both understanding reionization inferring fundamental physics from cosmological measurements. We forecast how future epoch experiments could constraint using a symmetries-based bias expansion that highlights special role played by anisotropies power spectrum ...
The dust abundance of the interstellar medium plays an important role in galaxy physics, chemical evolution matter and absorption re-emission stellar light. last years have seen a surge observational theoretical studies constraining dust-abundance galaxies up to $z\sim5$. In this work we gather latest measurements (with focus on covering metallicities range $6.8 < 12 + \log{(O/H)}<9$) predictio...
We characterize the average X-ray and radio properties of quiescent galaxies (QGs) with $\log{(M_\star/M_\odot)}>10$ at $0<z<5$. QGs are photometrically selected from latest COSMOS2020 catalog. conduct stacking analysis images Chandra COSMOS Legacy Survey for individually undetected QGs. Thanks to large sample deep images, stacked signal is significantly detected up $z\sim5$. The luminosity can...
We present the selection of high-redshift ($z\gtrsim5.7$) radio-loud (RL) quasi-stellar object (QSO) candidates from combination radio Rapid ASKAP Continuum Survey (RACS; at 888 MHz) and optical/near-infrared Dark Energy (DES). In particular, we selected six brighter than $S_{\rm 888MHz}>1$ mJy beam$^{-1}$ ${\rm mag}(z_\mathrm{{DES}})<21.3$ using dropout technique (in $i$-band). From this sampl...
Radiation pressure on dust is an important feedback process around star clusters and may eject gas from bright sub-regions in star-forming galaxies. The Eddington ratio has previously been constructed for galaxy-averaged observations, individual clusters, Galactic HII regions. Here we assess the role of radiation thousands across two local galaxies, NGC 6946 5194. Using a model spectral energy ...
The possible time variation of the fundamental constants nature has been an active subject research in modern physics. In this paper, we propose a new method to investigate such speed light $c$ using updated Hubble diagram high-redshift standard candles including Type Ia Supernovae (SNe Ia) and quasars (based on UV-X relation). Our findings show that SNe Pantheon sample, combined with currently...
Hot accretion flows contain collisionless plasmas that are believed to be capable of accelerating particles very high energies, as a result turbulence generated by the magnetorotational instability (MRI). We conduct unstratified shearing-box simulations MRI in ideal magnetohydrodynamic (MHD), and inject energetic (relativistic) test simulation snapshots detailed investigation on particle diffus...
The structure of a dwarf galaxy is an important probe into the effects stellar feedback and environment. Using unprecedented sample 223 low-mass satellites from ongoing Exploration Local VolumE Satellites (ELVES) Survey, we explore structures in mass range $10^{5.5}<M_\star<10^{8.5}$M$_\odot$. We survey around $80\%$ massive, $M_K<-22.4$ mag, hosts Volume. Our complete to luminosities $M_V<-9$ ...
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