GRB polarimetry with POET (2009)
McConnell, M. L., Angelini, L., Baring, M. G., Barthelmy, S., Black, J. K., Bloser, P. F., ...
Calibration of the Gamma-RAy Polarimeter Experiment (GRAPE) at a Polarized Hard X-Ray Beam (2008)
Bloser, P. F., Legere, J. S., McConnell, M. L., Macri, J. R., Bancroft, C. M., Connor, T. P., ...
The Gamma-RAy Polarimeter Experiment (GRAPE) is a concept for an astronomical hard X-ray Compton polarimeter operating in the 50 - 500 keV energy band. The instrument has been optimized for...
The MEGA project: science goals and hardware development (2006)
Bloser, P. F., Ryan, J. M., McConnell, M. L., Marci, J. R., Andritschke, R., Kanbach, G., ...
The MEGA project for medium energy gamma-ray astronomy (2006)
Bloser, P. F., Ryan, J. M., McConnell, M. L., Macri, J. R., Bravar, U., Kanbach, G., ...
Low and High Frequency Quasi-Periodic Oscillations in 4U1915-05 (2005)
Boirin, L., Barret, D., Olive, J. F., Bloser, P. F., Grindlay, J. E.
The X-ray burster and dipper 4U1915-05 (also known as XB1916-053) was observed 19 times for a total exposure of roughly 140 ks between 1996 February and October with the proportional counter array...
GRAPE - A Balloon-Borne Gamma-Ray Polarimeter Experiment (2005)
Bloser, P. F., Legere, J. S., Macri, J. R., McConnell, M. L., Narita, T., Ryan, J. M.
This paper reviews the development status of GRAPE (the Gamma-Ray Polarimeter Experiment), a hard X-ray Compton Polarimeter. The purpose of GRAPE is to measure the polarization of hard X-rays in the...
Status and Future Prospects for Gamma-Ray Polarimetry (2005)
McConnell, M. L., Bloser, P. F.
The recent detection of linear polarization from GRB120206 has piqued the interest of the community in this relatively unexplored avenue of research. Here, we review the current status and prospects...
MEGA: a medium-energy gamma-ray astronomy mission concept (2005)
Bloser, P. F., Ryan, J. M., McConnell, M. L., Macri, J. R., Bravar, U., Kanbach, G., ...
Pixelized Gas Micro-well Detectors for Advanced Gamma-ray Telescopes (2004)
We describe possible applications of pixelized micro-well detectors (PMWDs) as three-dimensional charged particle trackers in advanced gamma-ray telescope concepts. A micro-well detector consists of...
EXITE2 Observation of the SIGMA Source GRS 1227+025 (2004)
Grindlay, J. E., Bloser, P. F., Chou, Y., Narita, T.
We report the EXITE2 hard X-ray imaging of the sky around 3C273. A 2h observation on May 8, 1997, shows a $\sim$260 mCrab source detected at $\sim4\sigma$ in each of two bands (50-70 and 70-93 keV)...
The calibration setup of the MEGA prototype at the high intensity γ-ray source (2004)
Andritschke, R., Zoglauer, A., Kanbach, G., Schrey, F., Bloser, P. F., Hunter, S., ...
Calibration of the MEGA prototype (2004)
Andritschke, R., Zoglauer, A., Kanbach, G., Schönfelder, V., Schrey, F., Schopper, F., ...
Polarization measurements with the MEGA telescope (2004)
Zoglauer, Andreas, Andritschke, R., Kanbach, G., Bloser, P. F., Litvinenko, V. N.
Applications of Gas Imaging Micro-Well Detectors to an Advanced Compton Telescope (2003)
Bloser, P. F., Hunter, S. D., Ryan, J. M., McConnell, M. L., Miller, R. S., Jackson, T. N., ...
We present a concept for an Advanced Compton Telescope (ACT) based on the use of pixelized gas micro-well detectors to form a three-dimensional electron track imager. A micro-well detector consists...
A Concept for a High-Energy Gamma-ray Polarimeter (2003)
Bloser, P. F., Hunter, S. D., Depaola, G. O., Longo, F.
We present a concept for an imaging gamma-ray polarimeter operating from ~50 MeV to ~1 GeV. Such an instrument would be valuable for the study of high-energy pulsars, active galactic nuclei,...
X-ray Dip Monitoring of XB 1916-053 (2003)
Narita, T., Grindlay, J. E., Bloser, P. F., Chou, Y.
We report on the long term monitoring of X-ray dips from the ultracompact low-mass X-ray binary (LMXB) XB 1916-053. Roughly one-month interval observations were carried out with the Rossi X-ray...
Development of Silicon Strip Detectors for a Medium Energy Gamma-ray Telescope (2003)
Bloser, P. F., Schopper, F., Andritschke, R., Kanbach, G., Zoglauer, A., Lechner, P.
We report on the design, production, and testing of advanced double-sided silicon strip detectors under development at the Max-Planck-Institute as part of the Medium Energy Gamma-ray Astronomy (MEGA)...
Bloser, P. F., Chou, Y., Grindlay, J. E., Narita, J., Monnelly, G.
We present the spectral analysis system for the second- generation energetic X-ray imaging telescope experiment (EXITE2) balloon payload. EXITE2 is an imaging hard X-ray telescope using a...
Balloon flight background meaurement with actively-shielded planar and imaging CZT detecors (2002)
Bloser, P. F., Narita, T., Jenkins, J. A., Perrin, M., Murray, R., Grindlay, J. E.
The MEGA advanced Compton telescope project (2002)
Bloser, P. F., Andritschke, R., Kanbach, G., Schönfelder, V., Schopper, F., Zoglauer, A.
The MEGA Advanced Compton Telescope Project (2001)
Bloser, P. F., Andritschke, R., Kanbach, G., Schoenfelder, V., Schopper, F., Zoglauer, A., ...
The goal of the Medium Energy Gamma-ray Astronomy (MEGA) telescope is to improve sensitivity at medium gamma-ray energies (0.4-50 MeV) by at least an order of magnitude over that of COMPTEL. This...
Balloon Flight Background Measurement with Actively-Shielded Planar and Imaging CZT Detectors (2001)
Bloser, P. F., Narita, T., Jenkins, J. A., Perrin, M., Murray, R., Grindlay, J. E.
We present results from the flight of two prototype CZT detectors on a scientific balloon payload in September 2000. The first detector, referred to as ``CZT1,'' consisted of a 10 mm x 10 mm x 2 mm...
Bloser, P. F., Chou, Y., Grindlay, J. E., Narita, T., Monnelly, G.
We present the spectral analysis system for the second-generation Energetic X-ray Imaging Telescope Experiment (EXITE2) balloon payload. EXITE2 is an imaging hard X-ray telescope using a...
Timing Analysis of the Light Curve of the Dipping-Bursting X-ray Binary X1916-053 (2000)
Chou, Y., Grindlay, J. E., Bloser, P. F.
We present the timing analysis results for our observations of the x-ray dip source X1916-053 conducted with RXTE between February and October of 1996. Our goal was to finally measure the binary...
Development of Gold Contacted Flip-chip Detectors with IMARAD CZT (2000)
Narita, T., Bloser, P. F., Grindlay, J. E., Jenkins, J. A.
We present initial results from our evaluation of a gold-contacted pixellated detector using cadmium zinc telluride substrate produced by IMARAD Imaging Systems. The Horizontal Bridgman (HB) grown...
Bloser, P. F., Narita, T., Jenkins, J. A., Grindlay, J. E.
We report on the construction and laboratory testing of pixellated CZT detectors mounted in a flip-chip, tiled fashion and read out by an ASIC, as required for proposed hard X-ray astronomy missions....
Low and High Frequency Quasi-Periodic Oscillations in 4U1915-05 (2000)
Boirin, L., Barret, D., Olive, J. F., Bloser, P. F., Grindlay, J. E.
The X-ray burster and dipper 4U1915-05 (also known as XB1916-053) was observed 19 times for a total exposure of roughly 140 ks between 1996 February and October with the proportional counter array...
RXTE Studies of Long-Term X-ray Spectral Variations in 4U 1820-30 (2000)
Bloser, P. F., Grindlay, J. E., Kaaret, P., Zhang, W., Smale, A. P., Barret, D.
We present the results of detailed spectral studies of the ultra-compact low mass X-ray binary (LMXB) 4U 1820-30 carried out with the Rossi X-ray Timing Explorer (RXTE) during 1996-7. 4U 1820-30 is...
RXTE Studies of X-ray Spectral Variations with Accretion Rate in 4U 1915-05 (2000)
Bloser, P. F., Grindlay, J. E., Barret, D., Boirin, L.
We present the results of detailed spectral studies of the ultra-compact low mass X-ray binary (LMXB) 4U 1915-05 carried out with the Rossi X-ray Timing Explorer (RXTE) during 1996. 4U 1915-05 is an...
Low and High Frequency Quasi-Periodic Oscillations in 4U1915-05 (2000)
Boirin, L., Barret, D., Olive, J. F., Bloser, P. F., Grindlay, J. E.
The X-ray burster and dipper 4U1915-05 (also known as XB1916-053) was observed 19 times for a total exposure of roughly 140 ks between 1996 February and October with the proportional counter array...
Low and High Frequency Quasi-Periodic Oscillations in 4U1915-05 (2000)
Boirin, L., Barret, D., Olive, J. F., Bloser, P. F., Grindlay, J. E.
The X-ray burster and dipper 4U1915-05 (also known as XB1916-053) was observed 19 times for a total exposure of roughly 140 ks between 1996 February and October with the proportional counter array...
Design and Testing of a Prototype Pixellated CZT Detector and Shield for Hard X-Ray Astronomy (1999)
Bloser, P. F., Grindlay, J. E., Narita, T., Jenkins, J. A.
We report on the design and laboratory testing of a prototype imaging CZT detector intended for balloon flight testing in April 2000. The detector tests several key techniques needed for the...
Strong Field Gravity and X-Ray Observations of 4U1820-30 (1999)
Kaaret, P., Piraino, S., Bloser, P. F., Ford, E. C., Grindlay, J. E., Santangelo, A., ...
The behavior of quasi-periodic oscillations (QPOs) at frequencies near 1 kHz in the x-ray emission from the neutron star x-ray binary 4U1820-30 has been interpreted as evidence for the existence of...
Low and high frequency Quasi-Periodic Oscillations in 4U1915-05 (1999)
Boirin, L., Barret, D., Olive, J. F., Grindlay, J. E., Bloser, P. F.
The burster and dipper Low Mass X-ray Binary (LMXB) 4U1915-05 (also known as XB1916-053) was observed by the Rossi X-ray Timing Explorer (RXTE) 19 times for a total exposure of 140 ks between 1996...
Strong field gravity and x-ray observations of 4U1820-30 (1999)
Kaaret, P., Piraino, S., Bloser, P.F., Ford, E.C., Grindlay, J.E., Santangelo, A., ...
Discovery of High Frequency Quasi-Periodic Oscillations in 4u1915-05 (1998)
Barret, D., Boirin, L., Olive, J. F., Grindlay, J. E., Bloser, P. F., Swank, J., ...
The type I X-ray burster and dipper 4U1915-05 (also known as XB1916-053) was monitored by the Rossi X-ray Timing Explorer between February and October, 1996. The source was observed in various...