Author

U. Pen

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Review Open access Sep 2026

Detection of the Cosmological 21 cm Signal in Autocorrelation at z ∼ 1 with the Canadian Hydrogen Intensity Mapping Experiment

We present the first detection of the cosmological 21 cm intensity mapping signal in autocorrelation at z ∼ 1 with the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Using 94 nights of observation, we have measured the 21 cm auto power spectrum over a frequency range of 608.2–707.8 MHz (z = 1.34–1.01) at 0.4 h...

M. Amiri, K. Bandura, Arnab Chakraborty et al. · Astrophysical Journal · 3 citations

Preprint Aug 2026

Probing AU-Scale Magnetic-Field Reversals in the Interstellar Medium with Pulsar Scintillation

AU-scale structures in the interstellar medium have become relevant across several areas of astrophysics, from ISM microphysics to pulsar timing arrays and cosmic-ray (CR) propagation. Current sheets formed at magnetic-field reversals have drawn particular attention because they can deflect the dominant GeV CR populati...

Jacob Yen, Daniel Baker, Dong-Zi Li et al. · 0 citations

Open access Sep 2026

Multistation interstellar scintillation analysis of PSR B0655 + 64 with LOFAR

In this paper, we measure the scintillation of PSR B0655 + 64, a slow pulsar in a 24.7 h orbit with a white dwarf companion. We use data recorded simultaneously by four LOw-Frequency ARray stations over two long observations, of 12 and 16 h. We measure time delays of the scintillation pattern across different baselin...

G. Mall, R. Main, M. V. van Kerkwijk et al. · Monthly notices of the Royal... · 0 citations