Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Stephen T Holland"'
Autor:
Jan F. McGarry, Claudia C. Carabajal, Joseph-Paul A Swinski, Stephen P. Palm, James E. Golder, Peter Liiva, Ann R Reese, Jack L. Saba, Stephen T Holland
Publikováno v:
Earth and Space Science, Vol 8, Iss 4, Pp n/a-n/a (2021)
Earth and Space Science (Hoboken, N.j.)
Earth and Space Science (Hoboken, N.j.)
The Advanced Topographic Laser Altimetry System (ATLAS) is the sole instrument on the Ice, Cloud, and land Elevation Satellite 2 (ICESat‐2). Without some method of reducing the transmitted data, the volume of ATLAS telemetry would far exceed the no
Autor:
Stephen T. Holland, M. J. Page, M. de Pasquale, A. A. Breeveld, S. R. Oates, F. E. Marshall, N. P. M. Kuin, Patricia Schady
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 426:L86-L90
We examine a sample of 48 Swift/UVOT long Gamma-ray Burst light curves and find a correlation between the logarithmic luminosity at 200s and average decay rate determined from 200s onwards, with a Spearman rank coefficient of -0.58 at a significance
Autor:
Massimiliano De Pasquale, Patricia Schady, M. J. Page, Stephen T. Holland, Silvia Zane, M. Still, A. A. Breeveld, Phil Evans, S. R. Oates
Publikováno v:
Advances in Space Research. 48:1411-1414
An increasing sample of Gamma-Ray Bursts (GRBs) observed by Swift show evidence of 'chromatic breaks', i.e. breaks that are present in the X-ray but not in the optical. We find that in a significant fraction of these GRB afterglows the X-ray and the
Autor:
Wayne B. Landsman, Daniel E. Vanden Berk, Stephen T. Holland, Carlos Allende Prieto, Erik A. Hoversten, Michael H. Siegel, A. A. Breeveld, N. P. M. Kuin, Peter de Nully Brown, Peter W. A. Roming, Mat Page
Publikováno v:
The Astrophysical Journal. 725:1215-1225
At present, the precision of deep ultraviolet photometry is somewhat limited by the dearth of faint ultraviolet standard stars. In an effort to improve this situation, we present a uniform catalog of eleven new faint (u sim17) ultraviolet standard st
Autor:
Stefan Immler, Peter A. Milne, Filomena Bufano, Cody Raskin, Christopher J. Fontes, Steven Diehl, Stephen T. Holland, Francis Timmes, Krzysztof Belczynski, Ashley J. Ruiter, Paolo A. Mazzali, Lucille H. Frey, Casey Meakin, Peter J. Brown, Aimee Hungerford, Chris L. Fryer
Publikováno v:
The Astrophysical Journal. 725:296-308
The merger of two white dwarfs (a.k.a. double degenerate merger) has often been cited as a potential progenitor of type Ia supernovae. Here we combine population synthesis, merger and explosion models with radiation-hydrodynamics light-curve models t
Autor:
Martin Still, Patricia Schady, Stephen T. Holland, Bing Zhang, Jay Cummings, Pall Jakobsson, Elisabet Leitet, Staffan Linné, Johan P. U. Fynbo, Emmanuel U. Fonseca, B. Sbarufatti, Peter W. A. Roming, Rongfeng Shen
Publikováno v:
The Astrophysical Journal. 717:223-234
GRB 090417B was an unusually long burst with a T_90 duration of at least 2130 s and a multi-peaked light curve at energies of 15-150 keV. It was optically dark and has been associated with a bright star-forming galaxy at a redshift of 0.345 that is b
Autor:
S. R. Oates, Tom Dwelly, M. de Pasquale, Mat Page, Patricia Schady, N. P. M. Kuin, M. Still, P. W. A. Roming, Stephen T. Holland, Frank Marshall
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 401:2773-2792
In this paper we present the results from the analysis of a sample of 28 gamma-ray burst (GRB) afterglow spectral energy distributions, spanning the X-ray through to near-infrared wavelengths. This is the largest sample of GRB afterglow spectral ener
Autor:
Stefan Immler, Evan Scannapieco, Nevin N. Weinberg, Paolo A. Mazzali, Patrick A. Young, Peter A. Milne, Christopher J. Fontes, Peter J. Brown, Aimee Hungerford, Jon A. Dahl, Stephen T. Holland, Filomena Bufano, Chris L. Fryer, Lucille H. Frey
Publikováno v:
The Astrophysical Journal. 707:193-207
Astronomers have proposed a number of mechanisms to produce supernova explosions. Although many of these mechanisms are now not considered primary engines behind supernovae, they do produce transients that will be observed by upcoming ground-based su
Autor:
Filomena Bufano, Massimo Turatto, Stefan Immler, Luca Zampieri, Paolo A. Mazzali, P. W. A. Roming, Neil Gehrels, Stefano Benetti, Peter J. Brown, Stephen T. Holland, Enrico Cappellaro, A. A. Breeveld, Nino Panagia, Wayne B. Landsman, Elena Pian, Peter A. Milne
Publikováno v:
The Astrophysical Journal. 700:1456-1472
We present the entire sample of ultraviolet (UV) spectra of supernovae (SNe) obtained with the Ultraviolet/Optical Telescope (UVOT) on board the Swift satellite during the first 2 years of observations (2005/2006). A total of 29 UV-grism and 22 V-gri
Autor:
Bing Zhang, Pierre F. L. Maxted, A. Melandri, D. Bersier, Andrew J. Levan, Nial R. Tanvir, Stephen T. Holland, James E. Geach, J. P. Osborne, Richard Willingale, David N. Burrows, R. L. C. Starling, K. L. Page, P. T. O'Brien
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 395:328-334
Swift-detected GRB 080307 showed an unusual smooth rise in its X-ray light-curve around 100 seconds after the burst, at the start of which the emission briefly softened. This `hump' has a longer duration than is normal for a flare at early times and