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Fuzzy Dark Matter at Cosmic Dawn: New 21-cm Constraints
Olof Nebrin, Raghunath Ghara, Garrelt Mellema
Potential small-scale discrepancies in the picture of galaxy formation painted by the CDM paradigm have led to considerations of modified dark matter models. One such dark matte…
Position-dependent power spectra of the 21-cm signal from the epoch of reionization
Sambit K. Giri, Anson D'Aloisio, Garrelt Mellema +3
The 21-cm signal from the epoch of reionization is non-Gaussian. Current radio telescopes are focused on detecting the 21-cm power spectrum, but in the future the Square Kilometre…
The first power spectrum limit on the 21-cm signal of neutral hydrogen during the Cosmic Dawn at z=20-25 from LOFAR
B. K. Gehlot, F. G. Mertens, L. V. E. Koopmans +19
Observations of the redshifted 21-cm hyperfine line of neutral hydrogen from early phases of the Universe such as Cosmic Dawn and the Epoch of Reionization promise to open a new wi…
Approximate stabilizer rank and improved weak simulation of Clifford-dominated circuits for qudits
Yifei Huang, Peter Love
Bravyi and Gosset recently gave classical simulation algorithms for quantum circuits dominated by Clifford operations. These algorithms scale exponentially with the number of T-gat…
The 21cm bispectrum as a probe of non-Gaussianities due to X-ray heating
Catherine A. Watkinson, Sambit K. Giri, Hannah E. Ross +4
We present analysis of the normalised 21-cm bispectrum from fully-numerical simulations of intergalactic-medium heating by stellar sources and high-mass X-ray binaries (HMXB) durin…
New simulation of QSO X-ray heating during the Cosmic Dawn
Hannah Ross, Keri Dixon, Garrelt Mellema +1
The upcoming radio interferometer Square Kilometre Array is expected to directly detect the redshifted 21-cm signal from the Cosmic Dawn for the first time. In this era temperature…