Search Results - "Satyapal, S."
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A hard X-ray view of luminous and ultra-luminous infrared galaxies in GOALS – I. AGN obscuration along the merger sequence
Published in Monthly notices of the Royal Astronomical Society (01-10-2021)“…ABSTRACT The merger of two or more galaxies can enhance the inflow of material from galactic scales into the close environments of active galactic nuclei…”
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Tailoring the Physiochemical Properties of Sn-Doped V2O5 Using SHI Irradiation
Published in Journal of electronic materials (01-09-2024)“…When subjected to swift heavy ion (SHI) irradiation, a lattice acquires sufficient energy to induce desirable flaws in the material. In this study, the…”
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DISCOVERY OF A POPULATION OF BULGELESS GALAXIES WITH EXTREMELY RED MID-IR COLORS: OBSCURED AGN ACTIVITY IN THE LOW-MASS REGIME?
Published in The Astrophysical journal (01-04-2014)“…In contrast to massive, bulge hosting galaxies, very few supermassive black holes (SMBHs) are known in either low-mass or bulgeless galaxies. Such a population…”
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Measuring the black hole mass in ultraluminous X-ray sources with the X-ray scaling method
Published in Monthly notices of the Royal Astronomical Society (01-01-2018)“…AbstractIn our recent work, we demonstrated that a novel X-ray scaling method, originally introduced for Galactic black holes (BH), could be reliably extended…”
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A FAR-INFRARED SPECTRAL SEQUENCE OF GALAXIES: TRENDS AND MODELS
Published in The Astrophysical journal (10-11-2014)“…We present a framework for the interpretation of the far-infrared spectra of galaxies in which we have expanded the model parameters compared with previous…”
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Radiological anatomy of the intracranial vertebral artery in a select South African cohort of patients
Published in Scientific reports (09-06-2021)“…The intracranial segment of the vertebral artery (VA) is the unique part of the artery where the two VAs join to form a single vascular channel, viz. the…”
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AN OPTICALLY OBSCURED AGN IN A LOW MASS, IRREGULAR DWARF GALAXY: A MULTI-WAVELENGTH ANALYSIS OF J1329+3234
Published in The Astrophysical journal (01-01-2015)“…Supermassive black holes (SMBHs) are found ubiquitously in large, bulge-dominated galaxies throughout the local universe, yet little is known about their…”
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An anatomical investigation of the proximal vertebral arteries (V1, V2) in a select South African population
Published in Surgical and radiologic anatomy (English ed.) (01-06-2021)“…Introduction The most common type of vascular complication during cervical spine surgery is the vertebral artery (VA) injury. The presence of anatomical…”
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[Ne V] Emission in Optically Classified Starbursts
Published in The Astrophysical journal (10-05-2008)“…Detecting active galactic nuclei (AGNs) in galaxies dominated by powerful nuclear star formation and extinction effects poses a unique challenge. Due to the…”
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UV Light-Driven Photocatalytic Activity in Ferroelectric SrBi4Ti4O15 and Influence of Metal Modification
Published in Arabian journal for science and engineering (2011) (2024)“…The bismuth-layered ferroelectric (BLF) oxides are promising photocatalysts due to their wide band gap, photo-coupled ferro properties, Pb-Free composition,…”
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GOALS: The Great Observatories All-Sky LIRG Survey
Published in Publications of the Astronomical Society of the Pacific (01-06-2009)“…The Great Observatories All-Sky LIRG Survey (GOALS20) combines data from NASA’sSpitzer Space Telescope, Chandra X-Ray Observatory, Hubble Space Telescope(HST),…”
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The luminosity and stellar mass functions of red W1–W2 galaxies
Published in Monthly notices of the Royal Astronomical Society (21-11-2016)“…We present a study of nearby galaxies as a function of their [3.4]–[4.6] colour. Galaxies that are red in their [3.4]–[4.6] colour contain heated dust and the…”
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The Incidence of Active Galactic Nuclei in Pure Disk Galaxies: The Spitzer View
Published in The Astrophysical journal (10-10-2009)“…Using the Spitzer telescope, we have conducted a high-resolution spectroscopic study of 18 bulgeless (Hubble type of Sd or Sdm) galaxies that show no…”
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Spitzer Uncovers Active Galactic Nuclei Missed by Optical Surveys in Seven Late-Type Galaxies
Published in The Astrophysical journal (20-04-2008)“…We report the discovery using Spitzer's high-resolution spectrograph of seven active galactic nuclei (AGNs) in a sample of 32 late-type galaxies that show no…”
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Testing a Scale-independent Method to Measure the Mass of Black Holes
Published in The Astrophysical journal (01-07-2011)“…Estimating the black hole mass at the center of galaxies is a fundamental step not only for understanding the physics of accretion, but also for the…”
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The Discovery of an Active Galactic Nucleus in the Late-Type Galaxy NGC 3621: Spitzer Spectroscopic Observations
Published in The Astrophysical journal (01-07-2007)“…We report the discovery of an active galactic nucleus (AGN) in the nearby SAd galaxy NGC 3621 using Spitzer high spectral resolution observations. These…”
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Structural transition and photoluminescence behavior of (V2O5)1-x (Ag0.33V2O5)x (x = 0 to 0.1) nanocomposites
Published in Results in Chemistry (01-01-2023)“…The electrons are excited from valence band to conductions band at ∼3.5 eV. The electrons switch to higher valence band due to interband transition or defect…”
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A Spitzer Spectroscopic Survey of Low-Ionization Nuclear Emission-Line Regions: Characterization of the Central Source
Published in The Astrophysical journal (01-02-2009)“…We have conducted a comprehensive mid-infrared (IR) spectroscopic investigation of 67 low-ionization nuclear emission line regions (LINERs) using archival…”
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The SHI irradiation induced transition to negative dielectric constant phase in K2Bi4Ti4WO18
Published in Frontiers in physics (24-02-2023)“…In present communication, a new Aurivillius family compound K 2 Bi 4 Ti 4 WO 18 was synthesized, and the impact of swift heavy ion (SHI), Ni +11 irradiation on…”
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The [C II] 158 Micron Line Deficit in Ultraluminous Infrared Galaxies Revisited
Published in The Astrophysical journal (10-09-2003)Get full text
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