Galaxy gas as obscurer – II. Separating the galaxy-scale and nuclear obscurers of active galactic nuclei
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stw2955
Abstract: The "torus" obscurer of Active Galactic Nuclei (AGN) is poorly understood in terms of its density, substructure and physical mechanisms. Large X-ray surveys provide model boundary constraints, for both Compton-thin and Compton-thick levels of obscuration,… read more here.
Keywords: galactic nuclei; active galactic; obscuration; galaxy scale ... See more keywords
Black hole obscuration and duty-cycles mediated by AGN feedback in high-redshift galaxies
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1280
Abstract: Dense gas in the centre of galaxies feeds massive black holes, but can also become a source of obscuration and limit our ability to find faint Active Galactic Nuclei (AGN). We use a high resolution… read more here.
Keywords: high redshift; duty cycles; obscuration; black hole ... See more keywords
Restoring the top-of-atmosphere reflectance during solar eclipses: aproof of concept with the UV Absorbing Aerosol Index measured byTROPOMI
Sign Up to like & getrecommendations! Published in 2020 at "Atmospheric Chemistry and Physics"
DOI: 10.5194/acp-2020-1172
Abstract: Abstract. Solar eclipses reduce the measured top-of-atmosphere (TOA) reflectances as derived by Earth observation satellites, because the solar irradiance that is used to compute these reflectances is commonly measured before the start of the eclipse.… read more here.
Keywords: shadow; obscuration; reflectance; solar eclipses ... See more keywords