Swift captures the spectrally evolving prompt emission of GRB 070616 (2007)
Starling, R. L. C., O'Brien, P. T., Willingale, R., Page, K. L., Osborne, J. P., De Pasquale, M., ...
The origins of Gamma-ray Burst prompt emission are currently not well understood and in this context long, well-observed events are particularly important to study. We present the case of GRB 070616,...
Page, K. L., Willingale, R., Osborne, J. P., Zhang, B., Godet, O., Marshall, F. E., ...
Swift triggered on a precursor to the main burst of GRB 061121 (z=1.314), allowing observations to be made from the optical to gamma-ray bands. Many other telescopes, including Konus-Wind,...
Extreme Properties Of GRB061007: A Highly Energetic Or A Highly Collimated Burst? (2006)
Schady, P., De Pasquale, M., Page, M. J., Vetere, L., Pandey, S. B., Wang, X. Y., ...
GRB061007 is the brightest gamma-ray burst (GRB) to be detected by Swift and is accompanied by an exceptionally luminous afterglow that had a V-band magnitude
Gehrels, N., Norris, J. P., Mangano, V., Barthelmy, S. D., Burrows, D. N., Granot, J., ...
Gamma ray bursts (GRBs) are known to come in two duration classes, separated at ~2 s. Long bursts originate from star forming regions in galaxies, have accompanying supernovae (SNe) when near enough...
Donaghy, T. Q., Lamb, D. Q., Sakamoto, T., Norris, J. P., Nakagawa, Y., Villasenor, J., ...
Here we report the localizations and properties of four short-duration GRBs localized by the High Energy Transient Explorer 2 satellite (HETE-2): GRBs 010326B, 040802, 051211 and 060121, all of which...
GRB 050717: A Long, Short-Lag, High Peak Energy Burst Observed by Swift and Konus (2006)
Krimm, H. A., Hurkett, C., Pal'shin, V., Norris, J. P., Zhang, B., Barthelmy, S. D., ...
The long burst GRB 050717 was observed simultaneously by the Burst Alert Telescope (BAT) on Swift and the Konus instrument on Wind. Significant hard to soft spectral evolution was seen. Early...
A new y-ray burst classification scheme from GRB 060614. (2006)
Gehrels, N., Norris, J.P., Barthelmy, S., Granot, J., Kaneko, Y., Kouveliotou, C., ...
Preliminary results of the analysis of the BATSE TTE data (2005)
Horvath, I., Norris, J. P., Scargle, J. D., Balazs, L. G.
The Compton Gamma Ray Observatory (CGRO) observed many types of data and one of them is the time-tagged photon events (TTE data). We use the Bayesian block analysis, using Bayesian statistics,...
Long-lag, Wide-Pulse Gamma-Ray Bursts (2005)
Norris, J. P., Bonnell, J. T., Kazanas, D., Scargle, J. D., Hakkila, J., Giblin, T. W.
Currently, the best available probe of the early phase of gamma-ray burst (GRB) jet attributes is the prompt gamma-ray emission, in which several intrinsic and extrinsic variables determine GRB pulse...
Erratum: The Swift Gamma-Ray Burst Mission (2005)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift 0.225 (2005)
Gehrels, Neil, Sarazin, C.L., O'Brien, Paul T., Zhang, B., Barbier, L., Barthelmy, Scott D., ...
A short gamma-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225 (2005)
Gehrels, N., Sarazin, C.L., O'Brien, P.T., Zhang, B., Barbier, L., Barthelmy, S.D., ...
Gamma-ray bursts (GRBs) come in two classes: long (> 2s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at high...
Discovery of a New Low-Latitude Milky Way Globular Cluster using GLIMPSE (2004)
Kobulnicky, Chip, Monson, A. J., Buckalew, B. A, Darnel, J. M., Uzpen, B., Whitney, B. A., ...
Spitzer Space Telescope imaging as part of the Galactic Legacy Mid-Plane Survey Extraordinaire (GLIMPSE) reveals a previously unidentified low-latitude rich star cluster near l=31.3 degrees, b=-0.1...
The Swift gamma-ray burst mission (2004)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
Burst Statistics Using the Lag-Luminosity Relationship (2003)
Band, D. L., Norris, J. P., Bonnell, J. T.
Using the lag-luminosity relation and various BATSE catalogs we create a large catalog of burst redshifts, peak luminosities and emitted energies. These catalogs permit us to evaluate the...
Gamma-Ray Bursts and Cosmology (2003)
The unrivalled, extreme luminosities of gamma-ray bursts (GRBs) make them the favored beacons for sampling the high redshift Universe. To employ GRBs to study the cosmic terrain -- e.g., star and...
How Can The SN-GRB Time Delay Be Measured? (2003)
The connection between SNe and GRBs, launched by SN 1998bw/GRB 980425 and clinched by SN 2003dh/GRB 030329 -- with the two GRBs differing by a factor of approximately 50000 in luminosity -- so far...
Triggers and alerts with GLAST (2003)
Cohen-Tanugi, J., Omodei, N., Longo, F., Bansal, S., Bonnell, J., Norris, J. P., ...
We present preliminary results on Gamma Ray Burst (GRB) triggers with the Gamma-ray Large Area Space Telescope (GLAST). After a brief summary of the detector layout, GLAST expected performances on...
Short Gamma-Ray Bursts Are Different (2001)
Norris, J. P., Scargle, J. D., Bonnell, J. T.
We analyze BATSE time-tagged event (TTE) data for short gamma-ray bursts (T90 duration < 2.6 s), studying spectral lag vs. peak flux and duration, as well as the number of distinct pulse structures...
GLAST, GRBs, and Quantum Gravity (1999)
Norris, J. P., Bonnell, J. T., Marani, G. F., Scargle, J. D.
The fast temporal structures and cosmological distances of gamma-ray bursts (GRBs) afford a natural laboratory for testing theories of frequency-dependent propagation of high-energy photons, as...
"No High Energy Emission" GRB Class Is Attributable to Brightness Bias (1999)
The inhomogeneous brightness distribution of BATSE detected gamma-ray bursts has been considered strong evidence for their cosmological origin. However, subclasses of gamma-ray bursts have been shown...
Beam Test of Gamma-ray Large Area Space Telescope Components (1999)
Atwood, W. B., Ritz, S., Anthony, P., Bloom, E. D., Bosted, P. E., Bourotte, J., ...
A beam test of GLAST (Gamma-ray Large Area Space Telescope) components was performed at the Stanford Linear Accelerator Center in October, 1997. These beam test components were simple versions of the...
Connection Between Energy-dependent Lags And Peak Luminosity In Gamma-ray Bursts (1999)
Norris, J. P., Marani, G. F., Bonnell, J. T.
We suggest a connection between the pulse paradigm at gamma-ray energies and the recently demonstrated luminosity distribution in gamma-ray bursts: the spectral evolution timescale of pulse...
Signal Coherence Recovery Using Acousto-Optic Fourier Transform Architectures. (1998)
The X-ray Astronomy Branch at the Naval Research Laboratory is pursuing a program to develop a program for optical computing devices for fast processing of data in ground- and space-based...
Gravitationally Lensed Gamma-Ray Bursts as Probes of Dark Compact Objects (1998)
Marani, G. F., Nemiroff, R. J., Norris, J. P., Hurley, K., Bonnell, J. T.
If dark matter in the form of compact objects comprises a large fraction of the mass of the universe, then gravitational lensing effects on gamma-ray bursts are expected. We utilize BATSE and Ulysses...
Constraints on Association of Single-pulse Gamma-ray Bursts and Supernovae (1998)
Norris, J. P., Bonnell, J. T., Watanabe, K.
We explore the hypothesis, similar to one recently suggested by Bloom and colleagues, that some nearby supernovae are associated with smooth, single-pulse gamma-ray bursts, possibly having no...
On Suggestive Correlations Between GRBs and Clusters of Galaxies (1996)
Marani, G. F., Nemiroff, R. J., Norris, J. P., Bonnell, J. T.
Recent claims of angular correlations between gamma-ray bursts (GRBs) and clusters of galaxies are evaluated in light of existing but previously uncorrelated GRB positional data. Additional GRB data...
Time-Dilation, Log N - Log P, and Cosmology (1996)
Nemiroff, R. J., Norris, J. P., Bonnell, J. T., Scargle, J. D.
We investigate whether a simple cosmology can fit GRB results in both time dilation and Log N - Log P simultaneously. Simplifying assumptions include: all GRBs are spectrally identical to BATSE...
Test for Time Dilation of Intervals Between Pulse Structures in GRBs (1996)
Norris, J. P., Bonnell, J. T., Nemiroff, R. J., Scargle, J. D.
If $\gamma$-ray bursts are at cosmological distances, then not only their constituent pulses but also the intervals between pulses should be time-dilated. Unlike time-dilation measures of pulse...
Calibration of Tests for Time Dilation in GRB Pulse Structures (1996)
Norris, J. P., Nemiroff, R. J., Bonnell, J. T., Scargle, J. D.
Two tests for cosmological time dilation in $\gamma$-ray bursts -- the peak alignment and auto-correlation statistics -- involve averaging information near the times of peak intensity. Both tests...
Canonical Timescales In GRBs--199 (1996)
Understanding the bimodal duration distribution (dynamic range $>$ 10$^{4}$) of $\gamma$-ray bursts is central to determining if the phenomenon is in fact a singular one. A unifying concept, beyond...
Low-frequency quasi-periodic oscillations in the X-ray transient GRO J1719-24 (1996)
Hooft, F. Van Der, Kouveliotou, C., Paradijs, J.A. Van, Rubin, B.C., Crary, D.J., Finger, M.H., ...
Timescale in variance of rapid X-ray variability of the black hole candidate GRO J1719-24 (1996)
Hooft, F. Van Der, Kouveliotou, C., Rubin, B.C., Paradijs, J.A. Van, Crary, D.J., Finger, M.H., ...
Gamma-Ray Burst Peak Duration as a Function of Energy (1995)
Fenimore, E. E., Norris, J. P., Bonnell, J. T., Nemiroff, R. J.
Gamma-ray burst time histories often consist of many peaks. These peaks tend to be narrower at higher energy. If gamma-ray bursts are cosmological, the energy dependence of gamma-ray burst time...
Low-frequency QPO in the X-Ray transient GRO J1719-24 (1995)
Hooft, F. Van Der, Lewin, W.H.G., Norris, J.P., Paradijs, J. Van, Klis, M. Van Der, Kouveliotou, C., ...
Duration Distributions of Bright and Dim BATSE Gamma-Ray Bursts (1994)
Norris, J. P., Bonnell, J. T., Nemiroff, R. J., Scargle, J. D., Kouveliotou, C., Paciesas, W. S., ...
We have measured the T90 and T50 durations of bright and dim gamma-ray bursts (GRBs) detected by the Compton Gamma Ray Observatory's Burst and Transient Source Experiment (BATSE). The T90 (T50)...
Gross Spectral Differences between Bright and Dim Gamma-Ray Bursts (1994)
Nemiroff, R. J., Norris, J. P., Bonnell, J. T., Kouveliotou, C., Paciesas, W. S., ...
We find that dim gamma-ray bursts (GRBs) are softer than bright GRBs, as indicated on average by data from the Burst and Transient Source Experiment (BATSE) on board the Compton Gamma Ray...
Null Result in Gamma-Ray Burst Lensed Echo Search (1994)
Nemiroff, R. J., Norris, J. P., Kouveliotou, C., Fishman, G. J., Meegan, C. A., ...
We have searched for gravitational-lens induced echoes between gamma-ray bursts (GRBs) in NASA's orbiting {\it Compton} Gamma Ray Observatory's Burst and Transient Source Experiment (BATSE) data. The...
Low frequency QPO in GRO J1719--24 (1994)
Hooft, F. Van Der, Kouveliotou, C., Paradijs, J. Van, Rubin, B., Finger, M., Harmon, A., ...
Searches for millisecond pulsations in low-mass x-ray binaries with Ginga data (1994)
Vaughan, B.A., Klis, M. Van Der, Wood, K.S., Norris, J.P., Hertz, P., Michelson, P.F., ...
The rarity of soft gamma repeaters deduced from reactivation of SGR 1806-20 (1994)
Kouveliotou, C., Fishman, G.J., Meegan, C.A., Paciesas, W.S., Paradijs, J.A. Van, Norris, J.P., ...
Searches for millisecond pulsations on low-mass x-ray binaries, II (1994)
Vaughan, B.A., Klis, M. Van Der, Wood, K.S., Norris, J.P., Hertz, P., Michelson, P.F., ...
Detection of Signature Consistent with Cosmological Time Dilation in Gamma-Ray Bursts (1993)
Norris, J. P., Nemiroff, R. J., Scargle, J. D., Kouveliotou, C., Fishman, G. J., Meegan, C. A., ...
If gamma-ray bursters are at cosmological distances - as suggested by their isotropic distribution on the sky and by their number-intensity relation - then the burst profiles will be stretched in...
Gamma-Ray Bursts are Time-Asymmetric (1993)
Nemiroff, R. J., Norris, J. P., Kouveliotou, C., Fishman, G. J., Meegan, C. A., Paciesas, W. S.
A simple test for time-asymmetry is devised and carried out on the brightest gamma-ray bursts detected by the Burst and Transient Source Experiment (BATSE) on board the {\it Compton} Gamma Ray...