21cmemu: an emulator of 21cmfast summary observables
Recent years have witnessed rapid progress in observations of the epoch of reionization
(EoR). These have enabled high-dimensional inference of galaxy and intergalactic medium …
(EoR). These have enabled high-dimensional inference of galaxy and intergalactic medium …
A Bayesian approach to modelling spectrometer data chromaticity corrected using beam factors–I. Mathematical formalism
Accurately accounting for spectral structure in spectrometer data induced by instrumental
chromaticity on scales relevant for detection of the 21-cm signal is among the most …
chromaticity on scales relevant for detection of the 21-cm signal is among the most …
Relic neutrino decay solution to the excess radio background
PSB Dev, P Di Bari, I Martínez-Soler… - Journal of Cosmology …, 2024 - iopscience.iop.org
The excess radio background detected by ARCADE 2 represents a puzzle within the
standard cosmological model. There is no clear viable astrophysical solution, and therefore …
standard cosmological model. There is no clear viable astrophysical solution, and therefore …
Validating Posteriors Obtained by an Emulator When Jointly Fitting Mock Data of the Global 21 cm Signal and High-z Galaxy UV Luminosity Function
Although neural-network-based emulators enable efficient parameter estimation in 21 cm
cosmology, the accuracy of such constraints is poorly understood. We employ nested …
cosmology, the accuracy of such constraints is poorly understood. We employ nested …
New absorption window into composite dark matter and large scale structure
A Ganguly, R Khatri, TS Roy - Physical Review D, 2024 - APS
We propose a new method to hunt for dark matter using dark forest/absorption features
across the whole electromagnetic spectrum from radio to gamma rays, especially in the …
across the whole electromagnetic spectrum from radio to gamma rays, especially in the …
21cmlstm: A Fast Memory-based Emulator of the Global 21 cm Signal with Unprecedented Accuracy
JD Jones, SM Bahauddin, D Rapetti… - The Astrophysical …, 2024 - iopscience.iop.org
Neural network (NN) emulators of the global 21 cm signal need an emulation error much
less than the observational noise in order to be used to perform unbiased Bayesian …
less than the observational noise in order to be used to perform unbiased Bayesian …
Constraining a Model of the Radio Sky below 6 MHz Using the Parker Solar Probe/FIELDS Instrument in Preparation for Upcoming Lunar-based Experiments
We present a Bayesian analysis of data from the FIELDS instrument on board the Parker
Solar Probe (PSP) spacecraft with the aim of constraining low-frequency (≲ 6 MHz) sky in …
Solar Probe (PSP) spacecraft with the aim of constraining low-frequency (≲ 6 MHz) sky in …
RHINO: A large horn antenna for detecting the 21cm global signal
P Bull, A El-Makadema, H Garsden, J Edgley… - arXiv preprint arXiv …, 2024 - arxiv.org
The sky-averaged brightness temperature of the 21cm line from neutral hydrogen provides a
sensitive probe of the thermal state of the intergalactic medium, particularly before and …
sensitive probe of the thermal state of the intergalactic medium, particularly before and …
Percent-level timing of reionization: self-consistent, implicit-likelihood inference from XQR-30+ Ly forest data
The Lyman alpha (Lya) forest in the spectra of z> 5 quasars provides a powerful probe of the
late stages of the Epoch of Reionization (EoR). With the recent advent of exquisite datasets …
late stages of the Epoch of Reionization (EoR). With the recent advent of exquisite datasets …
EDGES and JWST with 21cm global signal emulator
S Yoshiura, T Minoda, T Takahashi - arXiv preprint arXiv:2305.11441, 2023 - arxiv.org
The 21cm global signal is an important probe to reveal the properties of the first
astrophysical objects and the processes of the structure formation from which one can …
astrophysical objects and the processes of the structure formation from which one can …