Building Large Area CZT Imaging Detectors for a Wide-Field Hard X-ray Telescope - ProtoEXIST1 (2009)
Hong, J., Allen, B., Grindlay, J., Chammas, N., Barthelemy, S., Baker, R., ...
We have constructed a moderately large area (32 cm2), fine pixel (2.5 mm pixel, 5 mm thick) CZT imaging detector which constitutes the first section of a detector module (256 cm2) developed for a...
How is sexual conflict over parental care resolved? A meta-analysis (2009)
Harrison, F, Barta, Z., Cuthill, I., Szekely, Tamas
Biparental care of offspring is both a form of cooperation and a source of conflict. Parents face a trade-off between current and future reproduction: caring less for the current brood allows...
Viscous medium promotes cooperation in the pathogenic bacterium Pseudomonas aeruginosa (2009)
Kummerli, R., Griffin, A. S., West, S. A., Buckling, A., Harrison, F
There has been extensive theoretical debate over whether population viscosity (limited dispersal) can favour cooperation. While limited dispersal increases the probability of interactions occurring...
New imaging and spectroscopy of the locations of several short-hard gamma-ray bursts (2008)
Gal-Yam, Avishay, Nakar, Ehud, Ofek, Eran O., Cenko, S. B., Kulkarni, S. R., Soderberg, A. M., ...
The detection and characterization of the afterglow emission and host galaxies of short-hard gamma-ray bursts (SHBs) is one of the most exciting recent astronomical discoveries. In particular,...
The Astrophysical Journal, J. S. Bloom, S. R. Kulkarni, F. Harrison, T. Prince, E. S. Phinney, ...
The spatial and temporal coincidence of gamma-ray burst (GRB) 980425 and supernova (SN) 1998bw has prompted speculation that there exists a subclass of GRBs produced by SNe ("S-GRBs"). A...
Ofek, E. O., Cenko, S. B., Gal-Yam, A., Fox, D. B., Nakar, E., Rau, A., ...
On 2006 May 5, a four second duration, low energy, ~10^49 erg, Gamma-Ray Burst (GRB) was observed, spatially associated with a z=0.0894 galaxy. Here, we report the discovery of the GRB optical...
The gamma-ray burst GRB060614 requires a novel explosive process (2006)
Gal-Yam, A., Fox, D., Price, P., Davis, M., Leonard, D., Soderberg, A., ...
Over the past decade our physical understanding of gamma-ray bursts (GRBs) has progressed rapidly thanks to the discovery and observation of their long-lived afterglow emission. Long-duration (T < 2...
The Progenitors of Short-Hard Gamma-Ray Bursts from an Extended Sample of Events (2005)
Gal-Yam, Avishay, Nakar, Ehud, Ofek, Eran, Fox, D. B., Cenko, S. B., Kulkarni, S. R., ...
The detection of the afterglow emission and host galaxies of short-hard gamma-ray bursts (SHBs) is one of the most exciting recent astronomical discoveries. Indications that SHB progenitors belong to...
Hong, J., Copete, A., Grindlay, J. E., Vadawale, S. V., Craig, W. W., Harrison, F., ...
We outline our plan to develop ProtoEXIST, a balloon-borne prototype experiment for the Energetic X-ray Imaging Survey Telescope (EXIST) for the Black Hole Finder Probe. EXIST will consist of...
Discovery and identification of the very high redshift afterglow of GRB 050904 (2005)
Haislip, J., Nysewander, M., Reichart, D., Levan, A., Tanvir, N., Cenko, S., ...
In 2000, Lamb and Reichart predicted that gamma-ray bursts (GRBs) and their afterglows occur in sufficient numbers and at sufficient brightnesses at very high redshifts (z > 5) to eventually replace...
Observing GRBs with EXIST (2004)
Hartmann, D. H., Grindlay, J., Hong, J., Loeb, A., Blandford, R., Craig, W., ...
We describe the Energetic X-ray Imaging Survey Telescope EXIST, designed to carry out a sensitive all-sky survey in the 10 keV – 600 keV band. The primary goal of EXIST is to find black holes in...
Proposed Next Generation GRB Mission: EXIST (2002)
Grindlay, J., Gehrels, N., Harrison, F., Blandford, R., Fishman, G., Kouveliotou, C., ...
A next generation Gamma Ray Burst (GRB) mission to follow the upcoming Swift mission is described. The proposed Energetic X-ray Imaging Survey Telescope, EXIST, would yield the limiting (practical)...
A difficulty found in some electromagnetic compatibility (EMC) measurements is illustrated by showing that a particular measurement yields significantly different results when performed in a certain...
Piro, L., Garmire, G., Garcia, M. R., Antonelli, L. A., Costa, E., Feroci, M., ...
We present X-ray observations of the afterglow of GRB000926 performed around and after the break observed in the optical light curve two days after the burst. The steep X-ray light curve observed...
GRB 991216 Joins the Jet Set: Discovery and Monitoring of its Optical Afterglow (2000)
Halpern, J. P., Uglesich, R., Mirabal, N., Kassin, S., Thorstensen, J., Keel, W. C., ...
The optical light curve of the energetic gamma-ray burst GRB 991216 is consistent with jet-like behavior in which a power-law decay steepens from t**(-1.22 +/- 0.04) at early times to t**(-1.53 +/-...
EXIST: A High Sensitivity Hard X-ray Imaging Sky Survey Mission for ISS (1999)
Grindlay, J., Bildsten, L., Chakrabarty, D., Elvis, M., Fabian, A., Fiore, F., ...
A deep all-sky imaging hard x-ray survey and wide-field monitor is needed to extend soft (ROSAT) and medium (ABRIXAS2) x-ray surveys into the 10-100 keV band (and beyond) at comparable sensitivity...
CdZnTe Background Measurement at Balloon Altitudes (1998)
Bloser, P., Grindlay, J., Narita, T., Harrison, F.
We report results of an experiment conducted in May 1997 to measure CdZnTe background and background reduction schemes in space flight conditions similar to those of proposed hard X-ray astrophysics...
Expected characteristics of the subclass of Supernova Gamma-ray Bursts (S-GRBs) (1998)
Bloom, J. S., Kulkarni, S. R., Harrison, F., Prince, T., Phinney, E. S., Frail, D. A.
The spatial and temporal coincidence between the gamma-ray burst (GRB) 980425 and supernova (SN) 1998bw has prompted speculation that there exists a class of GRBs produced by SNe (``S-GRBs''). Robust...
Proposed (to) EXIST: Hard X-ray Imaging All Sky Survey/Monitor (1997)
Grindlay, J. E., Prince, T. A., Harrison, F., Gehrels, N., Hailey, C. J., Ramsey, B., ...
The hard x-ray (10-600 keV) sky is inherently time variable and yet has neither been surveyed nor monitored with a sensitive imaging telescope. The Energetic X-ray Imaging Survey Telescope (EXIST) is...
ACHARYA, D. U., SENIOR, R., BASU, S., HARRISON, F., GALIANO, A., LAHIRI, A., ...
The effects of oral elgodipine, a new dihydropyridine calcium antagonist on ischaemia and left ventricular function were assessed by a single blind placebo controlled study in 12 patients with...