Publications (16)
A Search for SS Cyg Outburst Predictors
A. Price, A. A. Henden, G. Foster +20
We report null results on a two year photometric search for outburst predictors in SS Cyg. Observations in Johnson V and Cousins I were obtained almost daily for multiple hours per…
Using baseline-dependent window functions for data compression and field-of-interest shaping in radio interferometry
M. T. Atemkeng, O. M. Smirnov, C. Tasse +2
In radio interferometry, observed visibilities are intrinsically sampled at some interval in time and frequency. Modern interferometers are capable of producing data at very high t…
Tevatron energy and luminosity upgrades beyond the Main Injector
D. Amidei, A. Baden, G. Foster +6
The Fermilab Tevatron will be the world's highest energy hadron collider until the LHC is commissioned, it has the world's highest energy fixed target beams, and Fermilab will be t…
Baseline-dependent sampling and windowing for radio interferometry: data compression, field-of-interest shaping and outer field suppression
M. Atemkeng, O. Smirnov, C. Tasse +4
Traditional radio interferometric correlators produce regular-gridded samples of the true -distribution by averaging the signal over constant, discrete time-frequency intervals…
Fast algorithms to approximate the position-dependent point spread function responses in radio interferometric wide-field imaging
M. Atemkeng, O. Smirnov, C. Tasse +2
The desire for wide-field of view, large fractional bandwidth, high sensitivity, high spectral and temporal resolution has driven radio interferometry to the point of big data revo…
Constraining Polarized Foregrounds for EOR Experiments II: Polarization Leakage Simulations in the Avoidance Scheme
C. D. Nunhokee, G. Bernardi, S. A. Kohn +7
A critical challenge in the observation of the redshifted 21-cm line is its separation from bright Galactic and extragalactic foregrounds. In particular, the instrumental leakage o…
The Electronics and Data Acquisition System for the DarkSide-50 Veto Detectors
P. Agnes, L. Agostino, I. F. M. Albuquerque +155
DarkSide-50 is a detector for dark matter candidates in the form of weakly interacting massive particles (WIMPs). It utilizes a liquid argon time projection chamber (LAr TPC) for t…
The veto system of the DarkSide-50 experiment
The DarkSide Collaboration, P. Agnes, L. Agostino +158
Nuclear recoil events produced by neutron scatters form one of the most important classes of background in WIMP direct detection experiments, as they may produce nuclear recoils th…
Mode switching in the nearby Mira-like variable R Doradus
T. R. Bedding, A. A. Zijlstra, A. Jones +1
We discuss visual observations spanning nearly 70 years of the nearby semiregular variable R Doradus. Using wavelet analysis, we show that the star switches back and forth between…
Initial results from a realtime FRB search with the GBT
Devansh Agarwal, D. R. Lorimer, M. P. Surnis +11
We present the data analysis pipeline, commissioning observations and initial results from the GREENBURST fast radio burst (FRB) detection system on the Robert C. Byrd Green Bank T…
The Variability of R,N,C Stars from HIPPARCOS and AAVSO Data
M. Grenon, J. A. Mattei, L. Eyer +1
Accurate photometry was obtained for all programme stars during the 3.3-year HIPPARCOS mission. The final observing programme included several hundred Mirae (M), semiregular (SR) l…
The corona of GJ 1151 in the context of star-planet interaction
G. Foster, K. Poppenhaeger, J. D. Alvarado-Gómez +1
The low-mass star GJ 1151 has been reported to display variable low-frequency radio emission, which has been interpreted as a signpost of coronal star-planet interactions with an u…
Highest-frequency detection of FRB 121102 at 4-8 GHz using the Breakthrough Listen Digital Backend at the Green Bank Telescope
V. Gajjar, A. P. V. Siemion, D. C. Price +28
We report the first detections of the repeating fast radio burst source FRB 121102 above 5.2 GHz. Observations were performed using the 48 GHz receiver of the Robert C. Byrd Gre…
A Fast Radio Burst with frequency-dependent polarization detected during Breakthrough Listen observations
D. C. Price, G. Foster, M. Geyer +30
Here, we report on the detection and verification of Fast Radio Burst FRB 180301, which occurred on UTC 2018 March 1 during the Breakthrough Listen observations with the Parkes tel…
Revival of the magnetar PSR J1622-4950: observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR
F. Camilo, P. Scholz, M. Serylak +205
New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622-4950 indicate that the magnetar, in a quiescent state since at least ear…
Exoplanet X-ray irradiation and evaporation rates with eROSITA
G. Foster, K. Poppenhaeger, N. Ilic +1
High-energy irradiation is a driver for atmospheric evaporation and mass loss in exoplanets. This work is based on data from eROSITA, the soft X-ray instrument aboard SRG (Spectrum…