Jeff Bloch

Publication List Details

Period

1996 - 2007

Number

11

Co-Authors

Nested Test for Point Sources (2007)

James Theiler, Jeff Bloch

We describe an extension of a test proposed by Lampton for detecting weak and/or short-lived transient point sources in finiteresolution photon-limited maps of the sky. We test the null hypothesis...

Point Source Detection with Low Count Rates and Nonuniform Background (2007)

James Theiler, Jeff Bloch

). ffl For transient detection, there is a premium on fast algorithms. ffl Systematic anomalies -- Effective Exposure expensive to compute a priori -- Background is nonuniform: edges, pinholes,...

Optimizing Digital Hardware Perceptrons for Multi-Spectral Image Classification (2007)

Reid Porter, Neal Harvey, Simon Perkins, James Theiler, Steven Brumby, Jeff Bloch, ...

Abstract. We propose a system for solving pixel-based multi-spectral image classification problems with high throughput pipelined hardware. We introduce a new shared weight network architecture that...

An Untriggered Search for Optical Bursts (2002)

Kehoe, Robert, Akerlof, Carl, Balsano, Richard, Bloch, Jeff, Casperson, Don, Fletcher, Sandra, ...

We present an untriggered search for optical bursts with the ROTSE-I telephoto array. Observations were taken which monitor an effective 256 square degree field continuously over 125 hours to...

A Search for Early Optical Emission from Short and Long Duration Gamma-ray Bursts (2001)

Kehoe, Robert, Akerlof, Carl, Balsano, Richard, Barthelmy, Scott, Bloch, Jeff, Butterworth, Paul, ...

Gamma-ray bursts of short duration may harbor vital clues to the range of phenomena producing bursts. However, recent progress from the observation of optical counterparts has not benefitted the...

Prompt Optical Observations of Gamma-ray Bursts (2000)

Akerlof, Carl, Balsano, Richard, Barthelmy, Scott, Bloch, Jeff, Butterworth, Paul, Casperson, Don, ...

The Robotic Optical Transient Search Experiment (ROTSE) seeks to measure simultaneous and early afterglow optical emission from gamma-ray bursts (GRBs). A search for optical counterparts to six GRBs...

Prompt Optical Emission from Gamma-ray Bursts (1999)

Kehoe, Robert, Akerlof, Carl, Balsano, Richard, Barthelmy, Scott, Bloch, Jeff, Butterworth, Paul, ...

The Robotic Optical Transient Search Experiment (ROTSE) seeks to measure contemporaneous and early afterglow optical emission from gamma-ray bursts (GRBs). The ROTSE-I telescope array has been fully...

Multiple concentric annuli for characterizing spatially nonuniform backgrounds (1998)

Theiler, James, Bloch, Jeff

A method is presented for estimating the background at a given location on a sky map by interpolating the estimated background from a set of concentric annuli which surround this location. If the...

Multiple Concentric Annuli for Characterizing Spatially Nonuniform Backgrounds (1998)

James Theiler, Jeff Bloch

A method is presented for estimating the background at a given location on a sky map by interpolating the estimated background from a set of concentric annuli which surround this location. If the...

Heuristic Estimates of Weighted Binomial Statistics for Use in Detecting Rare Point Source Transients (1997)

James Theiler, Jeff Bloch

The ALEXIS (Array of Low Energy X-ray Imaging Sensors) (Priedhorsky et al. 1989) satellite scans nearly half the sky every fifty seconds, and downlinks time-tagged photon data twice a day. The...

Nested Test for Point Sources (1996)

James Theiler, Jeff Bloch

We describe an extension of a test proposed by Lampton for detecting weak and/or short-lived transient point sources in finiteresolution photon-limited maps of the sky. We test the null hypothesis...