Astrophysics with Radioactive Atomic Nuclei (2009)
Diehl, R., Von Ballmoos, P., Boggs, S., Burkert, A., Chieffi, A., Gehrels, N., ...
We propose to advance investigations of electromagnetic radiation originating in atomic nuclei beyond its current infancy to a true astronomy. This nuclear emission is independent from conditions of...
Abstract: Increasingly, the need to seamlessly link high-level behavioural descriptions of electronic hardware for modelling and simulation purposes to the final application hardware highlights the...
The Angular Distribution of COMPTEL Gamma-Ray Bursts (2008)
J. Ryan, A. Connors, M. Mcconnell
The superior burst location capability of the COMPTEL instrument aboard the Compton Gamma-Ray Observatory allows us to study the small-scale angular distribution of burst sources with good...
Ryan, J., Croft, K., Mori, T., Wesnes, Keith A., Spong, Jo, Downey, Luke A., ...
The study examines the effects of the antioxidant flavonoid Pycnogenol on a range of cognitive and biochemical measures in healthy elderly individuals. The study used a double-blind,...
O. R. Williams, K. Bennett, V. Schonfelder, J. J. Blom, J. Ryan
Statistical analysis of COMPTEL maximum likelihood-ratio distributions: evidence for a signal from previously undetected AGN
Latest Comptel Results on Galactic Black Hole Candidates (2007)
M. Mcconnell, K. Bennett, W. Collmar, R. Van Dijk, D. Forrest, W. Hermsen, ...
Since its launch in April of 1991, the COMPTEL experiment on the Compton Gamma-Ray Observatory has surveyed the entire sky in the energy range of 0:75 \Gamma 30:0 MeV. Here we survey the latest...
Diffuse Galactic Continuum Emission: Recent Studies using COMPTEL Data (2007)
A. W. Strong, R. Diehl, V. Schonfelder, K. Bennett, M. Mcconnell, J. Ryan
Abstract. COMPTEL full sky maximum entropy maps using 5 years of data have been produced using background estimates based on high-latitude observations. The Galactic diffuse emission can be studied...
COMPTEL gamma-ray study of the Crab nebula (2007)
Van Der, W. Hermsen, L. Kuiper, J. Ryan, V. Schonfelder, A. Strong
. We re-examine the Crab nebula, using five years of COMPTEL observations. A 30 bin 0.78--30 MeV spectrum is presented. It shows a spectral break at the edge of the COMPTEL energy range, and connects...
Astronomy And Astrophysics (2007)
K. Bennett, W. Hermsen, L. Kuiper, J. Ryan, V. Schonfelder, ...
. We report on a study of the fl-ray continuum emission from the Crab supernova nebula and on a search for nuclear de-excitation fl-ray lines. Crab is the brightest continuum source in the 1--10 MeV...
COMPTEL observations of GRO J1655-40 R. van Dijk, K. Bennett, C. Winkler (2007)
Astrophysics Division Estec, R. Van Dijk, K. Bennett, C. Winkler, H. Bloemen, W. Hermsen, ...
GRO J1655-40 is a transient black-hole candidate that has been shown to eject matter at apparently superluminal velocities. OSSE spectra measured during X-ray outbursts are consistent with a single...
COMPTEL Observation of GRB 930131 (2007)
Kippen Connors, A. Connors, W. Collmar, J. Greiner, L. Hanlon, G. Lichti, ...
On 1993 January 31 at 18:57:11 UT, COMPTEL detected high energy (0.730 MeV) emission from the intense cosmic gamma-ray burst GRB 930131. Upon rapid notification of this burst by the BATSE experiment...
Recent Results From Comptel Observations Of Cygnus X-1 M (2007)
M. Mcconnell, D. Forrest, J. Ryan, W. Collmar, V.Schönfelder, H. Steinle, ...
The COMPTEL experiment on the Compton Gamma-Ray Observatory (CGRO) has now observed Cyg X-1 on four separate occasions during phase 1 and phase 2 of its orbital mission (April, 1991 to August, 1993)....
COMPTEL Measurements of MeV Gamma-Ray Burst Spectra (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, C. Winkler, L. O. Hanlon, ...
ent of rapid variability at MeV energies in the stronger bursts provides evidence that either the sources are nearby (within the Galaxy) or the gamma-ray emission is relativistically beamed....
Strong Gamma-Ray Bursts Observed By Comptel During Its Second Year Of Operation (2007)
Kippen Connors, J. Ryan, J. Greiner, W. Hermsen, O. R. Williams, C. Winkler
The imaging Compton telescope COMPTEL onboard the Compton Gamma Ray Observatory can localize gamma-ray bursts occurring inside its ~1 sr field-of-view in the energy range from 0.75 to 30 MeV with...
Cgro-Comptel Observations Of The Centaurus A Region (2007)
H. Steinle, K. Bennett, H. Bloemen, W. Collmar, R. Diehl, W. Hermsen, ...
The sky region containing the active radio-galaxy Centaurus A has repeatedly been observed with the COMPTEL instrument onboard the Compton Gamma Ray Observatory (CGRO). The nine observation periods...
Application of a neural network simulation to the modelling of the COMPTEL background (2007)
Varendorff Forrest, D. Forrest, M. Mcconnell, J. Ryan
. COMPTEL onboard the Compton Gamma Ray Observatory (CGRO) measures gamma-rays in the background dominated energy range from 750 keV to 30 MeV. The event rate of the background varies strongly with...
Analysis Of Comptel Gamma-Ray Burst Locations And Spectra (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, C. Winkler, L. O. Hanlon, ...
. In its first three years of operation, the COMPTEL instrument on the Compton Gamma-Ray Observatory has measured the locations (mean accuracy ¸1 ffi ) and spectra (0.75--30 MeV) of 18 gamma-ray...
The Angular Distribution of COMPTEL Gamma-Ray Bursts (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, D. H. Hartmann, C. Winkler, ...
NTRODUCTION The isotropic, inhomogeneous distribution of burst sources derived from BATSE data has led to the general acknowledgment that GRBs could be of cosmological origin. If bursts are...
Large graphs with small degree and diameter: A voltage assignment approach (2007)
Ljiljana Brankovic, Mirka Miller, Ján Plesník, J. Ryan, J. Sirán, Joe Ryan
Voltage graphs are a powerful tool for constructing large graphs (called lifts) with prescribed properties as covering spaces of small base graphs. The main objective of the paper is to revisit the...
COMPTEL Observation of GRB 930131 (2007)
A. Connors, W. Collmar, J. Greiner, L. Hanlon, G. Lichti, W. Hermsen, ...
On 1993 January 31 at 18:57:11 UT, COMPTEL detected high energy (0.7-30 MeV) emission from the intense cosmic gamma-ray burst GRB 930131. Upon rapid notification of this burst by the BATSE experiment...
COMPTEL Observations of X-Ray Binaries (2007)
M. Mcconnell, K. Bennett, W. Collmar, A. Connors, R. Van Dijk, D. Forrest, ...
Over the past several years, there have been sporadic reports of emission at energies> 1 MeV from several X-ray binary (XRB) sources. This includes not only observations in the 1-10 MeV range, but...
The Preliminary Cosmic Di use-Ray Spectrum from 800 keV to 30 MeV Measured with COMPTEL (2007)
J. Ryan, K. Bennett, H. Bloeman, D. Forrest, W. Hermsen, M. Mcconnell, ...
A preliminary Cosmic Di use-ray (CDG) spectrum from 800 keV to 30 MeV is presented, using the COMPTEL instrument, the Imaging Compton Telescope on-board the Compton Gamma Ray Observatory. The...
COMPTEL Measurements of MeV Gamma-Ray Burst Spectra (2007)
J. Ryan, A. Connors, M. Mcconnell, C. Winkler Y, V. Schonfelder Z, ...
We present results from the on-going spectral analysis of gamma-ray bursts measured by the COMPTEL instrument in its main Compton \Telescope " observing mode (0.75{30 MeV). Thus far, 18...
COMPTEL OBSERVATIONS OF CYGNUS X-1 (2007)
M. Mcconnell, A. Connors, D. Forrest, J. Ryan, W. Collmar, R. Diehl, ...
We report on the latest results from an analysis of data on Cygnus X-1 as collected by the COMPTEL experiment on the Compton Gamma-Ray Observatory (CGRO). COMPTEL detected the source around 1 MeV...
RECENT RESULTS FROM COMPTEL OBSERVATIONS OF CYGNUS X-1 (2007)
M. Mcconnell, D. Forrest, J. Ryan, W. Collmar, V. Schönfelder, H. Steinle, ...
The COMPTEL experiment on the Compton Gamma-Ray Observatory (CGRO) has now observed Cygnus X-1 on four separate ocasions during phase 1 and phase 2 of its orbital mission (between April, 1991 and...
J. Ryan, K. Bennett, H. Bloeman, D. Forrest, W. Hermsen, M. Mcconnell, ...
A preliminary Cosmic Diffuse fl-ray (CDG) spectrum from 800 keV to 30 MeV is presented, using the COMPTEL instrument, the Imaging Compton Telescope on-board the Compton Gamma Ray Observatory. The...
The Preliminary Cosmic Diffuse (2007)
J. Ryan, K. Bennett, H. Bloemen, D. Forrest, W. Hermsen, M. Mcconnell, ...
A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are:
A.: An information-theoretic primer on complexity, self-organisation and emergence (2007)
Mikhail Prokopenko, Fabio Boschetti, J. Ryan
Abstract. Complex Systems Science aims to understand concepts like complexity, self-organization, emergence and adaptation, among others. The inherent fuzziness in complex systems definitions is...
Lahoud, R., Al-Jefout, M., Tyler, J., Ryan, J., Driscoll, G.
BACKGROUND: The effect of early- and mid-follicular LH concentrations on the ovarian response and pregnancy outcomes was evaluated in women receiving pituitary down-regulation with a GnRH agonist and...
Lahoud, R., Tyler, J., Ryan, J., Driscoll, G.
BACKGROUND: The effect of early- and mid-follicular LH concentrations on the ovarian response and pregnancy outcomes was evaluated in women receiving pituitary down-regulation with a GnRH agonist and...
Lahoud, R., Al-Jefout, M., Tyler, J., Ryan, J., Driscoll, G.
BACKGROUND: The effect of early- and mid-follicular LH concentrations on the ovarian response and pregnancy outcomes was evaluated in women receiving pituitary down-regulation with a GnRH agonist and...
The relational grid monitoring architecture: Mediating information about the grid (2004)
A. W. Cooke, W. Nutt, J. Magowan, M. Oevers, P. Taylor, ...
Abstract. We have developed and implemented the Relational Grid Monitoring Architecture (R-GMA) as part of the DataGrid project, to provide a flexible information and monitoring service for use by...
The relational grid monitoring architecture: Mediating information about the grid (2004)
A. W. Cooke, W. Nutt, J. Magowan, M. Oevers, P. Taylor, ...
Abstract. We have developed and implemented the Relational Grid Monitoring Architecture (R-GMA) as part of the DataGrid project, to provide a flexible information and monitoring service for use by...
Using Visualization Tools to Gain Insight Into Your Data (2003)
C. Plaisant, G. Chintalapani, C. Lukehart, D. Schiro, J. Ryan
Dependable Perception for Robots (2001)
Chuck Thorpe, Olivier Clatz, Dave Duggins, Jay Gowdy, Rob Maclachlan, J. Ryan, ...
The weakest link in many mobile robots is perception. In order to build robots that are reliable and dependable and safe, we need to build robots that can see. Perception is becoming a solved problem...
Dependable Perception for Robots (2001)
Chuck Thorpe, Olivier Clatz, Dave Duggins, Jay Gowdy, Rob Maclachlan, J. Ryan, ...
The weakest link in many mobile robots is perception. In order to build robots that are reliable and dependable and safe, we need to build robots that can see. Perception is becoming a solved problem...
COMPTEL Observations of a source in the (2001)
Direction Of The, A. W. Strong, W. Collmar, K. Bennett, H. Bloemen, R. Diehl, ...
During the CGRO mission, the Galactic centre region was well exposed by COMPTEL.
BENNETT, NA, RYAN, J, BIELY, P, VRSANSKA, M, KREMNICKY, L, MACRIS, BJ, ...
BENNET, NA, RYAN, J, BIELY, P, VRSANSKA, M, KREMNICKY, L, MACRIS, BJ, ...
The Solar Flare On 15 June 1991 (1997)
Rank Debrunner, H. Debrunner, L. Kocharov, G. Kovaltsov, J. Lockwood, M. Mcconnell, ...
In June 1991 the Sun produced a series of six X-class flares. For the flare event on 15 June 1991 there exists a rich set of measurements, including Ha , radio and microwaves, X-rays, gamma-rays,...
A Search for Gamma-Ray Flares From Black-Hole Candidates on Time Scales of (1997)
Hours Van Dijk, K. Bennett, H. Bloemen, R. Diehl, W. Hermsen, M. Mcconnell, ...
. Strong short-lived flares from black-hole candidates have been detected in the hard X-ray regime and possibly also at fl-ray energies. Here we present a search for short-lived flares in the...
Extended Gamma-Ray Emission Of The Solar Flares In June 1991 (1997)
Rank Debrunner, H. Debrunner, J. Lockwood, M. Mcconnell, J. Ryan, V. Schonfelder
In June 1991, a series of six X-class solar flares took place in the active region 6659. We present measurements of gamma-rays that were performed with the Compton telescope COMPTEL during the flares...
New Comptel Results on Pulsar Studies at MeV Energies (1997)
W. Hermsen, L. Kuiper, V. Schönfelder, A. W. Strong, K. Bennett, R. Much, ...
COMPTEL, aboard the Compton Gamma-Ray Observatory, has detected at MeV energies PSR B1951+32 and found indications for a signal from PSR B0656+14. In the combined COMPTEL -- EGRET spectra it is...
The MeV Spectrum of Cygnus X-1 as Observed with COMPTEL (1997)
Mcconnell Bennett, M. Mcconnell, K. Bennett, H. Bloemen, W. Collmar, L. Kuiper, ...
. The COMPTEL experiment on the Compton Gamma-Ray Observatory (CGRO) has observed the Cygnus region on several occasions since launch. These data represent the most sensitive observations to date of...
ALL-SKY IMAGING AT 2.2 MeV (1997)
Mcconnell Bennett, M. Mcconnell, K. Bennett, H. Bloemen, R. Diehl, S. Fletcher, ...
It is now generally accepted that accretion of matter onto a compact object (white dwarf, neutron star or black hole) is one of the most efficient processes in the universe for producing high energy...
O. R. Williams, K. Bennett, R. Much, V. Schonfelder, W. Collmar, J.J. Blom, ...
. GRO J1753+57 was first reported by COMPTEL as a very bright source in the range 1-3 MeV during an observation in November 1992. It was not detected in three other observations of the same region...
Diffuse Galactic Continuum Emission: Recent Studies using COMPTEL Data (1997)
Strong Diehl, A. W. Strong, R. Diehl, V. Schonfelder, K. Bennett, M. Mcconnell, ...
. COMPTEL full sky maximum entropy maps using 5 years of data have been produced using background estimates based on high-latitude observations. The Galactic diffuse emission can be studied using...
COMPTEL All-Sky Imaging at 2.2 MeV (1997)
Mcconnell Fletcher, M. Mcconnell, S. Fletcher, K. Bennett, H. Bloemen, W. Hermsen, ...
. It is now generally accepted that accretion of matter onto a compact object (white dwarf, neutron star or black hole) is one of the most efficient processes in the universe for producing high...
The Total Cosmic Diffuse Gamma-Ray Spectrum from 9 to 30 MeV Measured with COMPTEL (1997)
Kappadath Ryan, J. Ryan, K. Bennett, H. Bloemen, R. Diehl, W. Hermsen, ...
. A preliminary COMPTEL Cosmic Diffuse Gamma-Ray (CDG) spectrum from 800 keV to 30 MeV was presented earlier at the 3 rd Compton Symposium. The COMPTEL results represent the first significant...
COMPTEL observations of GRO J1655-40 (1997)
R. Van Dijk, K. Bennett, C. Winkler, H. Bloemen, W. Hermsen, R. Diehl, ...
GRO J1655-40 is a transient black-hole candidate that has been shown to eject matter at apparently superluminal velocities. OSSE spectra measured during X-ray outbursts are consistent with a single...
fl-Ray Emission in Solar Flares (1996)
Rank Bennett, K. Bennett, H. Bloemen, H. Debrunner, J. Lockwood, M. Mcconnell, ...
INTRODUCTION Before the large solar flares in June 1991 occured, fl-ray emission from flares has been observed for no longer than about half an hour. For the 11 June flare EGRET detected emission ?...
COMPTEL Overview: Achievements and Expectations (1996)
V. Schönfelder, K. Bennett, H. Bloemen, R. Diehl, W. Hermsen, G. Lichti, ...
. The Imaging Compton Telescope (COMPTEL) aboard NASA's Compton Gamma-Ray Observatory has opened the 1 to 30 MeV fl-ray energy range as a new window to astronomy. The first-ever broadband...
COSPAR PAPER E.3-S.5.06 page 1 COMPTEL OBSERVATIONS OF SOLAR FLARE GAMMA-RAYS (1993)
Mcconnell Bennett Forrest, M. Mcconnell, K. Bennett, D. Forrest, L. Hanlon, J. Ryan, ...
The imaging g-ray telescope COMPTEL on board NASA's Compton Gamma-Ray Obserrvatory has observed a number of solar flares during its first year in orbit. Of particular interest were those X-class...
PHOTOTHERMAL DETECTION OF PICOSECOND PHOTOINDUCED DICHROISM (1983)
Ironside, C., Taylor, R., Ryan, J.
A technique which uses photothermal deflection spectroscopy to detect photoinduced dichroism is described. It has the advantage that effects due to nonlinear mixing of pulse and probe in picosecond...
Somatostatin in human pancreatic and gastric juice (1981)
Arimura, A., Groot, K., Taminato, T., Ertan, A., Akdamar, K., Ryan, J., ...
Considerable amounts of IRS are secreted after secretin injection in human pancreatic juice collected during endoscopic retrograde cholangiopancreatography. The mean IRS levels in the pancreatic...
OBSERVATION OF COUPLED AMPLITUDE MODES IN THE RAMAN SPECTRUM OF INCOMMENSURATE γ-Na2CO3 (1981)
The Raman spectrum of incommensurate γ-Na2CO3 reveals an additional number of modes which are activated by the distortion. A complex coupled mode spectrum observed at low frequencies is...
Ryan, J., Katiyar, R., Taylor, W.
The low frequency Raman spectra of a number of KH2PO4 (KDP) isomorphs have been recorded over a range of temperatures in the paraelectric phase. We have extended the measurements to frequencies of...