Cosmic X-ray background and Earth albedo Spectra with Swift/BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
We use Swift/BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the Cosmic X-ray background (CXB) and of the Earth albedo emission in the 15--200 keV...
Cosmic X-ray background and earth Albedo spectra with Swift BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
McGlynn, S., Clark, D.J., Dean, A.J., Hanlon, L., McBreen, S., Willis, D.R., ...
The spectrometer aboard INTEGRAL, SPI, has the capability to detect the signature of polarised emission from a bright gamma-ray source. GRB 041219a is the most intense burst localised by INTEGRAL and...
A description of sources detected by INTEGRAL during the first 4 years of observations (2007)
Bodaghee, A., Courvoisier, T. J. -L., Rodriguez, J., Beckmann, V., Produit, N., Hannikainen, D., ...
Parameters from the literature, such as positions, photoelectric absorption (nH), spin and orbital periods, and distances or redshifts, were collected for all ~500 sources detected by INTEGRAL-ISGRI...
McGlynn, S., Clark, D. J., Dean, A. J., Hanlon, L., McBreen, S., Willis, D. R., ...
The spectrometer aboard INTEGRAL, SPI, has the capability to detect the signature of polarised emission from a bright gamma-ray source. GRB 041219a is the most intense burst localised by INTEGRAL and...
The Second IBIS/ISGRI Soft Gamma-Ray Survey Catalog (2006)
Dean, A.J., Bird, A.J., Barlow, E.J., Bassani, L., Bazzano, A., Belanger, G., ...
In this paper we report the second soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific data set is based on more than 10 Ms of...
The second IBIS/ISGRI soft gamma-ray survey catalog (2006)
Bird, A.J., Barlow, E.J., Bassani, L., Bazzano, A., Belanger, G., Bodaghee, A., ...
In this paper we report the second soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific data set is based on more than 10 Ms of...
INTEGRAL observations of recurrent fast X-ray transient sources (2005)
Sguera, V., Barlow, E. J., Bird, A. J., Clark, D. J., Dean, A. J., Hill, A. B., ...
Fast X-ray Transients (FXTs) are believed to be non-recurrent bright X-ray sources lasting less than a day and occuring at serendipitous positions, they can best detected and discovered by...
Dean, A. J., Bazzano, A., Hill, A. B., Stephen, J. B., Bassani, L., Barlow, E. J., ...
INTEGRAL is the first gamma-ray astronomy mission with a sufficient sensitivity and angular resolution combination appropriate to the detection and identification of considerable numbers of gamma-ray...
Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922 (2005)
Barlow, E. J., Bird, A. J., Clark, D. J., Cornelisse, R., Dean, A. J., Hill, A. B., ...
We present the transient nature of INTEGRAL source IGR J17285-2922, identified from a single period of activity during an IBIS/ISGRI Galactic Centre Deep Exposure in September 2003. The source has a...
Evidence of polarisation in the prompt gamma-ray emission from GRB 930131 and GRB 960924 (2005)
Willis, D. R., Barlow, E. J., Bird, A. J., Clark, D. J., Dean, A. J., McConnell, M. L., ...
The true nature of the progenitor to GRBs remains elusive; one characteristic that would constrain our understanding of the GRB mechanism considerably is gamma-ray polarimetry measurements of the...
INTEGRAL observations of recurrent fast X-ray transient sources (2005)
Sguera, V., Barlow, E.J., Bird, A.J., Clark, D.J., Dean, A.J., Hill, A.B., ...
Fast X-ray Transients (FXTs) are believed to be non-recurrent bright X-ray sources lasting less than a day and occuring at serendipitous positions, they can best detected and discovered by...
NEARLY FREE MOLECULAR FLOW. A COMPARISON OF THEORY AND EXPERIMENT, (2005)
Sherman, F. S., Willis, D. R., Maslach, G. J.
Measured drag coefficients for cylinders, normal strips and spheres in nearly free-molecular flow at M = 6, 8 and 10 are correlated with a collision-rate parameter suggested by the modified Krook...
The BATSE 9 year histories of the brightest AGN (2004)
Hill, A. B., Barlow, E. J., Bird, A. J., Dean, A. J., Ferguson, C., Shaw, S. E., ...
The Burst and Transient Source Experiment (BATSE) aboard CGRO monitored the whole sky through 8 NaI(Tl) crystal scintillators sensitive in the 20 keV - 2 MeV energy band continuously from April 1991...
Gamma-Ray All Sky Imaging with BATSE (2004)
Hill, A. B., Barlow, E. J., Bird, A. J., Dean, A. J., Ferguson, C., Shaw, S. E., ...
The BATSE mission aboard CGRO observed the whole sky for 9 years in the 20 keV - 2 MeV energy band. Flat-fielding of the temporal variations in the background present in the data set has been...
Gamma-Ray All-Sky Imaging with the Burst and Transient Source Experiment (2004)
Shaw, S. E., Westmore, M. J., Hill, A. B., Bird, A. J., Dean, A. J., Ferguson, C., ...
The BATSE mission aboard CGRO monitored the whole sky in the 20 keV - 1 MeV energy band continuously from April 1991 until June 2000. Although BATSE had very poor intrinsic angular resolution, the...
Shaw, S. E., Westmore, M. J., Bird, A. J., Dean, A. J., Ferguson, C., Lockley, J. J., ...
Orbiting x-ray and gamma ray instruments are subject to large background count rates due to local particle fluxes in the space environment. The ability of an instrument to make calibrated...
Flat-Fielding BATSE Occultation Data for use in a Hard X-Ray All Sky Survey (2001)
Shaw, S. E., Bird, A. J., Dean, A. J., Diallo, N., Ferguson, C., Knodlseder, J., ...
The BATSE mission aboard CGRO can be used to observe hard X-ray sources by using the Earth occultation method. This method relies on measuring a step in the count rate profile in each BATSE detector...
A CAUCHY METHOD FOR AN INTEGRAL EQUATION OF LINEARIZED COUETTE FLOW, (1998)
Casti,J. L., Kalaba,R. E., Willis,D. R.
The report demonstrates the use of the theory of invariant imbedding to reduce the solution of a Fredholm integral equation to the solution of a set of ordinary differential equations with specified...