Mizuno, Yosuke, Zhang, Bing, Giacomazzo, Bruno, Nishikawa, Ken-Ichi, Hardee, Philip E., Nagataki, Shigehiro, ...
We solve the Riemann problem for the deceleration of an arbitrarily magnetized relativistic flow injected into a static unmagnetized medium in one dimension. We find that for the same initial Lorentz...
Extinction trends in GRB host galaxies (2009)
Updike, Adria C., Hartmann, Dieter H., Greiner, Jochen, Klose, Sylvio
On The Origin Of The Highest Redshift Gamma-Ray Burst GRB 080913 (2008)
Belczynski, Krzysztof, Hartmann, Dieter H., Fryer, Chris L., Holz, Daniel E., O'Shea, Brian
GRB 080913, discovered by SWIFT, is the most distant gamma-ray burst (GRB) known to-date, with a spectroscopically determined redshift of z=6.7. The detection of a burst at such an early epoch of the...
Mizuno, Yosuke, Zhang, Bing, Giacomazzo, Bruno, Nishikawa, Ken-Ichi, Hardee, Philip E., Nagataki, Shigehiro, ...
We solve the Riemann problem for the deceleration of an arbitrarily magnetized relativistic flow injected into a static unmagnetized medium in one dimension. We find that for the same initial Lorentz...
The Rapidly Flaring Afterglow of the Very Bright and Energetic GRB 070125 (2008)
Updike, Adria C., Haislip, Joshua B., Nysewander, Melissa C., Fruchter, Andrew S., Kann, D. Alexander, Klose, Sylvio, ...
We report on multi-wavelength observations, ranging from the X-ray to radio wave bands, of the IPN-localized gamma-ray burst GRB 070125. Spectroscopic observations reveal the presence of absorption...
Nuclear astrophysics capabilities of the GRIPS telescope (2008)
Zoglauer, Andreas, Andritschke, Robert, Boggs, Steven E., Diehl, Roland, Greiner, Jochen, Hartmann, Dieter H., ...
The Locations Of Gamma-Ray Bursts Measured By Comptel (2007)
Marc Kippen, James M. Ryan, Alanna Connors, Dieter H. Hartmann, Christoph Winkler, Lucien Kuiper, ...
The COMPTEL instrument on the Compton Gamma Ray Observatory is used to measure the locations of gamma-ray bursts through direct imaging of MeV photons. In a comprehensive search, we have detected and...
A Magnetohydrodynamic Boost for Relativistic Jets (2007)
Mizuno, Yosuke, Hardee, Philip, Hartmann, Dieter H., Nishikawa, Ken-Ichi, Zhang, Bing
We performed relativistic magnetohydrodynamic simulations of the hydrodynamic boosting mechanism for relativistic jets explored by Aloy & Rezzolla (2006) using the RAISHIN code. Simulation results...
Radioactive 26Al and massive stars in the Galaxy (2006)
Diehl, Roland, Halloin, Hubert, Kretschmer, Karsten, Lichti, Giselher G., Schoenfelder, Volker, Strong, Andrew W., ...
Gamma-rays from radioactive 26Al (half life ~7.2 10^5 yr) provide a 'snapshot' view of ongoing nucleosynthesis in the Galaxy. The Galaxy is relatively transparent to such gamma-rays, and emission has...
Radioactive 26Al from massive stars in the galaxy (2006)
Diehl, Roland, Halloin, Hubert, Kretschmer, Karsten, Lichti, Giselher G., Schönfelder, Volker, Strong, Andrew W., ...
Yoshida, Takashi, Kajino, Toshitaka, Hartmann, Dieter H.
We constrain energy spectra of supernova neutrinos through the avoidance of an overproduction of the 11B abundance during Galactic chemical evolution. In supernova nucleosynthesis calculations with a...
A preliminary exposure-map based comparision of SPI and RHESSI 26 Al flux measurements (2004)
Wunderer, Cornelia B., Boggs, Steven E., Kalemci, Emrah, Smith, David, Kretschmer, Karsten, Diehl, Roland, ...
Gamma-rays from massive stars in Cygnus and Orion (2003)
Diehl, Roland, Kretschmer, Karsten, Plüschke, Stefan, Cerviño, Miguel, Hartmann, Dieter H.
Evolution of the polarization of the optical afterglow of the y-ray burst GRB030329 (2003)
Greiner, Jochen, Klose, Sylvio, Reinsch, Klaus, Schmid, Hans Martin, Sari, Re'em, Hartmann, Dieter H., ...
Kneiske, Tanja M., Mannheim, Karl, Hartmann, Dieter H.
Gamma-ray absorption due to gamma-gamma-pair creation on cosmological scales depends on the line-of-sight integral of the evolving density of low-energy photons in the Universe, i.e. on the history...
The Discovery of an Embedded Cluster of High-Mass Stars Near SGR 1900+14 (2000)
Vrba, Frederick J., Henden, Arne A., Luginbuhl, Christian B., Guetter, Harry H., Hartmann, Dieter H., Klose, Sylvio
Deep I-band imaging to approximately I = 26.5 of the soft gamma-ray repeater SGR 1900+14 region has revealed a compact cluster of massive stars located only a few arcseconds from the fading radio...
Incorporating Technology into a First Course in Physics for Engineers (1999)
John P. Mccarten, Dieter H. Hartmann
A variety of new teaching tools have come into existence in recent years because of advancements with computers and the worldwide web. At Clemson University, we have spent the last tow years using a...
Properties of GRB Host Galaxies (1997)
Hartmann, Dieter H., Band, David L.
The transients following GRB970228 and GRB970508 showed that these (and probably all) GRBs are cosmological. However, the host galaxies expected to be associated with these and other bursts are...
GRB Repetition Limits from Current BATSE Observations (1997)
Hakkila, Jon, Meegan, Charles A., Pendleton, Geoffrey N., Briggs, Michael S., Horack, John M., Hartmann, Dieter H., ...
Revised upper limits on gamma-ray burst repetition rates are found using the BATSE 3B and 4B catalogs. A statistical repetition model is assumed in which sources burst at a mean rate but in which...
A Statistical Treatment of the Gamma-Ray Burst "No Host Galaxy" Problem: I. Methodology (1997)
Band, David L., Hartmann, Dieter H.
If gamma-ray bursts originate in galaxies at cosmological distances, the host galaxy should be detected if a burst error box is searched deep enough; are the host galaxies present? We present and...
The Locations of Gamma-Ray Bursts Measured by COMPTEL (1997)
Kippen, R. Marc, Ryan, James M., Connors, Alanna, Hartmann, Dieter H., Winkler, Christoph, Kuiper, Lucien, ...
The COMPTEL instrument on the Compton Gamma Ray Observatory is used to measure the locations of gamma-ray bursts through direct imaging of MeV photons. In a comprehensive search, we have detected and...
Testing the Dipole and Quadrupole Moments of Galactic Models (1996)
Briggs, Michael S., Paciesas, William S., Pendleton, Geoffrey N., Meegan, Charles A., Fishman, Gerald J., Horack, John M., ...
If gamma-ray bursts originate in the Galaxy, at some level there should be a galactic pattern in their distribution on the sky. We test published galactic models by comparing their dipole and...
Search for Supergalactic Anisotropies in the 3B Catalog (1996)
Hartmann, Dieter H., Briggs, Michael S., Mannheim, Karl
The angular distribution of GRBs is isotropic, while the brightness distribution of bursts shows a reduced number of faint events. These observations favor a cosmological burst origin. If GRBs are...
BATSE Observations of the Large-Scale Isotropy of Gamma-Ray Bursts (1995)
Briggs, Michael S., Paciesas, William S., Pendleton, Geoffrey N., Meegan, Charles A., Fishman, Gerald J., Horack, John M., ...
We use dipole and quadrupole statistics to test the large-scale isotropy of the first 1005 gamma-ray bursts observed by the Burst and Transient Source Experiment (BATSE). In addition to the entire...
Do Gamma-Ray Burst Sources Repeat? (1995)
Meegan, Charles A., Hartmann, Dieter H., Brainerd, J. J., Briggs, Michael S., Paciesas, William S., Pendleton, Geoffrey, ...
The demonstration of repeated gamma-ray bursts from an individual source would severely constrain burst source models. Recent reports (Quashnock and Lamb 1993; Wang and Lingenfelter 1993) of evidence...
Afterglows from the largest explosions in the universe
The distinction of “largest explosions in the universe” has been bestowed on cosmic gamma-ray bursts. Their afterglows are brighter than supernovae and therefore are called hypernovae. Photometry...
Afterglows from the largest explosions in the universe
The distinction of “largest explosions in the universe” has been bestowed on cosmic gamma-ray bursts. Their afterglows are brighter than supernovae and therefore are called hypernovae. Photometry...