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Quijote-png: Quasi-maximum likelihood estimation of primordial non-gaussianity in the nonlinear dark matter density field
(American Astronomical Society, 2022)
Future large-scale structure surveys are expected to improve current bounds on primordial non-Gaussianity (PNG),
with a significant impact on our understanding of early universe physics. The level of such improvements ...
Impact of Rubin observatory cadence choices on supernovae photometric classification
(American Astronomical Society, 2023)
The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) will discover an unprecedented
number of supernovae (SNe), making spectroscopic classification for all the events infeasible. LSST will thus rely
on ...
Multifilter time-series observations of eleven blue short-period atlas variable stars
(IOP Publishing, 2023)
Eleven periodic variable stars were observed photometrically through two to four filters from the set UBVRCIC.
Phase-folded data for each star cover full cycles of variation. Spectral energy distributions, based on ...
Efficient long-range active galactic nuclei (agns) feedback affects the low-redshift lyα forest
(American Astronomical Society, 2023)
Active galactic nuclei (AGNs) feedback models are generally calibrated to reproduce galaxy observables such as
the stellar mass function and the bimodality in galaxy colors. We use variations of the AGN feedback
implementations ...
Mightee-h i: Possible interactions with the galaxy NGC 895
(Oxford University Press, 2023)
The transformation and evolution of a galaxy is strongly influenced by interactions with its environment. Neutral hydrogen (H i) is an excellent way to trace these interactions. Here, we present H i observations of the ...
Constraining primordial non-gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys
(SpringerOpen, 2023)
Surveys of the matter distribution contain ‘fossil’
information on possible non-Gaussianity that is generated in
the primordialUniverse. This primordial signal survives only
on the largest scales where cosmic variance ...
Clustering of HI galaxies in the HI parkes all sky survey and arecibo legacy fast alfa survey
(Oxford University Press, 2011)
We investigate the clustering of H I-selected galaxies in the Arecibo Legacy Fast ALFA
Survey (ALFALFA) and compare results with those obtained for the H I Parkes All Sky
Survey (HIPASS). Measurements of the angular ...
Feature guided training and rotational standardization for the morphological classification of radio galaxies
(Oxford University Press, 2023)
State-of-the-art radio observatories produce large amounts of data which can be used to study the properties of radio galaxies.
However, with this rapid increase in data volume, it has become unrealistic to manually process ...
Wide-angle effects in multi-tracer power spectra with Doppler corrections
(IOP Publishing, 2023)
. We examine the computation of wide-angle corrections to the galaxy power spectrum including redshift-space distortions and relativistic Doppler corrections, and also including multiple tracers with differing clustering, ...
Mining mini-halos with MeerKAT I. Calibration and imaging
(Oxford University Press, 2023)
Radio mini-halos are clouds of diffuse, low-surface brightness synchrotron emission that surround the Brightest Cluster Galaxy
(BCG) in massive cool-core galaxy clusters. In this paper, we use third generation calibration ...