Search Results - Galactic year
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The suppression of star formation by powerful active galactic nuclei
Published 2012“…The old, red stars that constitute the bulges of galaxies, and the massive black holes at their centres, are the relics of a period in cosmic history when galaxies formed stars at remarkable rates and active galactic nuclei (AGN) shone brightly as a result of accretion onto black holes. …”
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GLEAM: The GaLactic and Extragalactic All-Sky MWA Survey
Published 2015“…The survey ran for two years, the first year using 40-kHz frequency resolution and 0.5-s time resolution; the second year using 10-kHz frequency resolution and 2 s time resolution. …”
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A new era for low frequency Galactic center transient monitoring
Published 2014“…LOBO offers over 100 VLA GC monitoring hours per year, possibly revealing new transients and helping validate ASTRO2010's anticipation of a new era of transient radio astronomy. …”
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Search for Galactic PeV gamma rays with the IceCube Neutrino Observatory
Published 2013“…IceCube is sensitive to muons with energies above ~500 GeV at the surface, which provides an efficient veto system for hadronic air showers with energies above 1 PeV. One year of data from the 40-string IceCube configuration was used to perform a search for point sources and a Galactic diffuse signal. …”
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TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources
Published 2018“…TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of -30deg declination including high-resolution Very Long Baseline Interferometry (VLBI) imaging, radio, optical/UV, X-ray and gamma-ray studies. …”
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Joint Constraints on Galactic Diffuse Neutrino Emission from the ANTARES and IceCube Neutrino Telescopes
Published 2018“…The existence of diffuse Galactic neutrino production is expected from cosmic-ray interactions with Galactic gas and radiation fields. …”
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Characterizing the optical variability of bright blazars: Variability-based selection of fermi active galactic nuclei
Published 2012“…After correcting for beaming, we estimate that the characteristic timescale of blazar variability is ~ 3years in the rest frame of the jet, in contrast with the 320day disk flux timescale observed in quasars. …”
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The high time resolution universe pulsar survey - XII. Galactic plane acceleration search and the discovery of 60 pulsars
Published 2015“…We present initial results from the low-latitude Galactic plane region of the High Time Resolution Universe pulsar survey conducted at the Parkes 64-m radio telescope. …”
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GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey - I. A low-frequency extragalactic catalogue
Published 2017“…Using the Murchison Widefield Array (MWA), the low-frequency Square Kilometre Array precursor located in Western Australia, we have completed the GaLactic and Extragalactic All-sky MWA (GLEAM) survey, and present the resulting extragalactic catalogue, utilizing the first year of observations. …”
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Determination of the point-spread function for the fermi large area telescope from on-orbit data and limits on pair halos of active galactic nuclei
Published 2013“…rays from pulsars and active galactic nuclei (AGNs). Above 3 GeV, the PSF is found to be broader than the pre-launch PSF. …”
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The fourteenth data release of the Sloan Digital Sky Survey: first spectroscopic data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apa...
Published 2018“…This release makes public data taken by SDSS-IV in its first two years of operation (July 2014-2016). Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. …”
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The formation and evolution of massive galaxies and their supermassive black holes over the past 12 billion years
Published 2011“…This thesis examines many of the ways in which massive galaxies and their super- massive black holes have changed over the past 12 billion years. In a sense, this is an attempt to write a cosmic history of massive galaxies, and in so doing construct a useful catalogue of changes which can be studied to gain insight into galaxy formation and evolution. …”
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Spectral variability of radio sources at low frequencies
Published 2021“…Using two epochs of observations from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey that were taken one year apart, we search for spectral variability across 100-230 MHz for 21 558 sources. …”
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Multiwavelength scrutiny of X-ray sources in dwarf galaxies: ULXs versus AGNs
Published 2023“…These three galaxies were previously identified as hosting candidate active galactic nuclei on the basis of lower resolution X-ray imaging. …”
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A new approach for modelling insolation from the space perspective
Published 2014“…The incoming radiation was modelled as a flux passing through a cross-section (latitudinal belt), and the changes of light throughout the year were represented by an ellipse with changing parameters. …”
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A new approach for modelling insolation from the space perspective
Published 2014“…In the current project we have developed a novel insolation model which allows users to incorporate the impact of space activity (solar flares, galactic radiation) on the Earth’s climate. The incoming radiation was modelled as a flux passing through a cross-section (latitudinal belt), and the changes of light throughout the year were represented by an ellipse with changing parameters. …”
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