Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Trott, Cathryn M."'
Autor:
Jaiswar, Ravi, Gupta, Anshu, da Cunha, Elisabete, Trott, Cathryn M., Harshan, Anishya, Battisti, Andrew, Forrest, Ben
The nature of the first galaxies that reionized the universe during the Epoch of Reionization (EoR) remains unclear. Attempts to directly determine spectral properties of these early galaxies are affected by both limited photometric constraints acros
Externí odkaz:
http://arxiv.org/abs/2405.04870
Autor:
Gupta, Anshu, Trott, Cathryn M., Jaiswar, Ravi, Ryan-Weber, E. V., Bunker, Andrew J., Acharyya, Ayan, Cameron, Alex J., Forrest, Ben, Kacprzak, Glenn G., Nanayakkara, Themiya, Tran, Kim-Vy, Chokshi, Aman
We present the discovery of a unique Lyman-continuum (LyC) emitter at z=3.088. The LyC emission were detected using the Hubble Space Telescope (HST) WFC3/UVIS F336W filter, covering a rest-frame wavelength range of 760-900 Angstrom. The peak signal-t
Externí odkaz:
http://arxiv.org/abs/2403.13285
Autor:
Trott, Cathryn M., Wayth, Randall B.
We present the first constraints on the cross-correlation power spectrum of HeII ($^{+}{\rm He}^3$) signal strength using the redshifted 8.67GHz hyperfine transition between $z=2.9$ and $z=4.1$ and with interferometric data obtained from the public a
Externí odkaz:
http://arxiv.org/abs/2309.05960
Radio interferometers can potentially detect the sky-averaged signal from the Cosmic Dawn (CD) and the Epoch of Reionisation (EoR) by studying the Moon as a thermal block to the foreground sky. The first step is to mitigate the Earth-based RFI reflec
Externí odkaz:
http://arxiv.org/abs/2306.01013
Understanding the temporal characteristics of data from low frequency radio telescopes is of importance in devising suitable calibration strategies. Application of time series analysis techniques to data from radio telescopes can reveal a wealth of i
Externí odkaz:
http://arxiv.org/abs/2302.07474
Fast cosmological transients such as fast radio bursts (FRBs) and gamma-ray bursts (GRBs) represent a class of sources more compact than any other cosmological object. As such they are sensitive to significant magnification via gravitational lensing
Externí odkaz:
http://arxiv.org/abs/2210.09487
Autor:
Trott, Cathryn M., Mondal, Rajesh, Mellema, Garrelt, Murray, Steven G., Greig, Bradley, Line, Jack L. B., Barry, Nichole, Morales, Miguel F.
Publikováno v:
A&A 666, A106 (2022)
The Multi-frequency Angular Power Spectrum (MAPS) is an alternative to spherically-averaged power spectra, and computes local fluctuations in the angular power spectrum without need for line-of-sight spectral transform. To test different approaches t
Externí odkaz:
http://arxiv.org/abs/2208.06082
Preparing for the first detection of the cosmic 21-cm signal from large-scale interferometer experiments requires rigorous testing of the data analysis and reduction pipelines. To validate that these pipelines do not erroneously remove or add feature
Externí odkaz:
http://arxiv.org/abs/2205.09960
Autor:
Thekkeppattu, Jishnu N., McKinley, Benjamin, Trott, Cathryn M., Jones, Jake, Ung, Daniel C. X.
Global 21-cm experiments require exquisitely precise calibration of the measurement systems in order to separate the weak 21-cm signal from Galactic and extragalactic foregrounds as well as instrumental systematics. Hitherto, experiments aiming to ma
Externí odkaz:
http://arxiv.org/abs/2203.10466
One of the major priorities of international radio astronomy is to study the early universe through the detection of the 21 cm HI line from the epoch of reionisation (EoR). Due to the weak nature of the 21 cm signal, an important part in the detectio
Externí odkaz:
http://arxiv.org/abs/2201.04281