Reionization and Cosmology with 21 cm Fluctuations (2009)
Morales, Miguel F., Wyithe, J. Stuart B.
Measurement of the spatial distribution of neutral hydrogen via the redshifted 21 cm line promises to revolutionize our knowledge of the epoch of reionization and the first galaxies, and may provide...
Pritchard, Jonathan R., Loeb, Abraham, Wyithe, J. Stuart B.
In this paper, we explore the constraints on the reionization history that are provided by current observations of the Lyman-alpha forest and the CMB. Rather than using a particular semi-analytic...
The Star Formation Rate in the Reionization Era as Indicated by Gamma-ray Bursts (2009)
Kistler, Matthew D., Yuksel, Hasan, Beacom, John F., Hopkins, Andrew M., Wyithe, J. Stuart B.
High-redshift gamma-ray bursts (GRBs) offer an extraordinary opportunity to study aspects of the early Universe, including the cosmic star formation rate (SFR). Motivated by the two recent highest-z...
Modification of the 21-cm power spectrum by quasars during the epoch of reionisation (2009)
Geil, Paul M., Wyithe, J. Stuart B.
We assess the effect of a population of high-redshift quasars on the 21-cm power spectrum during the epoch of reionisation. Our approach is to implement a semi-numerical scheme to calculate the...
Photometric Variability in Earthshine Observations (2009)
Langford, Sally V., Wyithe, J. Stuart B., Turner, Edwin L.
The identification of an extrasolar planet as Earth-like will depend on the detection of atmospheric signatures or surface non-uniformities. In this paper we present spatially unresolved flux light...
Testing the Copernican Principle via Cosmological Observations (2008)
Bolejko, Krzysztof, Wyithe, J. Stuart B.
Observations of distances to Type-Ia supernovae can be explained by cosmological models that include either a gigaparsec-scale void, or a cosmic flow, without the need for Dark Energy. Instead of...
Rhook, Kirsty J., Geil, Paul M., Wyithe, J. Stuart B.
It has recently been suggested that the power spectrum of redshifted 21cm fluctuations could be used to measure the scale of baryonic acoustic oscillations (BAOs) during the reionisation era. The...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, Narayana D. R., ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. Ramesh, Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. R., ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array Low Frequency Demonstrator (MWA LFD) to better understand the wide-field, wide-band properties of their design...
Bhat, N. D. R., Wayth, Randall B., Knight, Haydon S., Bowman, Judd D., Oberoi, Divya, Barnes, David G., ...
We report on the detection of giant pulses from the Crab Nebula pulsar at a frequency of 200 MHz using the field deployment system designed for the Mileura Widefield Array's Low Frequency...
Bowman, Judd D., Barnes, David G., Briggs, Frank H., Corey, Brian E., Lynch, Merv J., Bhat, N. D. Ramesh, ...
Experiments were performed with prototype antenna tiles for the Mileura Widefield Array--Low Frequency Demonstrator (MWA-LFD) to better understand the widefield, wideband properties of their design...
Realistic Event Rates for Detection of Supermassive Black Hole Coalescence by LISA (2005)
Rhook, Kirsty J., Wyithe, J. Stuart B.
The gravitational waves generated during supermassive black hole (SMBH) coalescence are prime candidates for detection by the satellite LISA. We use the extended Press-Schechter formalism combined...
Prospects for redshifted 21 cm observations of quasar H II regions (2005)
Wyithe, J. Stuart B., Loeb, Abraham, Barnes, David G.
The introduction of low-frequency radio arrays over the coming decade is expected to revolutionize the study of the reionization epoch. Observation of the contrast in redshifted 21 cm emission...
Prospects for redshifted 21 cm observations of quasar H II regions (2005)
Wyithe, J. Stuart B., Loeb, Abraham, Barnes, David G.
The introduction of low-frequency radio arrays over the coming decade is expected to revolutionize the study of the reionization epoch. Observation of the contrast in redshifted 21 cm emission...
Microlensing of the Broad Emission Line Region in the Quadruple Lens SDSS J1004+4112 (2004)
Richards, Gordon T., Keeton, Charles R., Pindor, Bartosz, Hennawi, Joseph F., Hall, Patrick B., Turner, Edwin L., ...
We present seven epochs of spectroscopy on the quadruply imaged quasar SDSS J1004+4112, spanning observed-frame time delays from 1 to 322 days. The spectra reveal differences in the emission lines...
The Multi-Band Magnification Bias for Gravitational Lenses (2002)
Wyithe, J. Stuart B., Winn, Joshua N., Rusin, David
We present a generalization of the concept of magnification bias for gravitationally-lensed quasars, in which the quasars are selected by flux in more than one wavelength band. To illustrate the...
Searching for MACHOs in Galaxy Clusters (2000)
Lewis, Geraint F., Ibata, Rodrigo A., Wyithe, J. Stuart B.
If cluster dark matter is in the form of compact objects it will introduce fluctuations into the light curves of distant sources. Current searches for MACHOs in clusters of galaxies focus on...