Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Andrew Ulmer"'
Autor:
Anup Mohan, Andrew Ulmer, Ahmed S. Kaseb, Arshad Alikhan, Zohar Kapach, Daniel Merrick, George K. Thiruvathukal, Yung-Hsiang Lu
Publikováno v:
IEEE MultiMedia. 26:31-41
Hundreds of millions of network cameras have been installed throughout the world. Each is capable of providing a vast amount of real-time data. Analyzing the massive data generated by these cameras requires significant computational resources and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::081f467ad6cb9919ef412c316bc06c93
https://doi.org/10.1109/mmul.2018.2890255
https://doi.org/10.1109/mmul.2018.2890255
Autor:
Andrew Ulmer
Publikováno v:
The Astrophysical Journal. 473:110-116
The two-point correlation function, $\xi$, of Lyman-alpha forest is found to be large, $\xi = 1.8^{+1.6}_{-1.2}$, > 90% confidence level, on the scale of 250-500 km/s for a sample of absorbers (0 1.7) where $\xi \approx 0.2$ for velocities > 250 km/s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d55520194b4c61a51498e5b7d50d42c6
https://doi.org/10.1086/178130
https://doi.org/10.1086/178130
Autor:
Andrew Ulmer
Publikováno v:
AIP Conference Proceedings.
Tidal disruption flares are differentiated into two classes -- those which are sub-Eddington and those which radiate near the Eddington limit. Flares from black holes above ~2 x 10^7 M_\odot will generally not radiate above the Eddington limit. For a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e515e408f4d2c0acdc768fdfedaee9
https://doi.org/10.1063/1.55887
https://doi.org/10.1063/1.55887
Autor:
Edward L. Fitzpatrick, Andrew Ulmer
We have determined the location of the line-opacity modified Eddington limit for stars in the LMC using the most recent atmosphere models combined with a precise mapping to the HR Diagram through up-to-date stellar evolution calculations. While we fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98e729dd5dc4873e8883922b33d0ee60
http://arxiv.org/abs/astro-ph/9708264
http://arxiv.org/abs/astro-ph/9708264
Autor:
Andrew Ulmer
Tidal disruption flares are differentiated into two classes -- those which are sub-Eddington and those which radiate near the Eddington limit. Flares from black holes above ~2 x 10^7 M_\odot will generally not radiate above the Eddington limit. For a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf3e1872ef7f96ea9ff5b605d3ec86f5
http://arxiv.org/abs/astro-ph/9706247
http://arxiv.org/abs/astro-ph/9706247
Autor:
Abraham Loeb, Andrew Ulmer
We show that the disruption of a star by a 10^6 solar mass black hole in a galactic nucleus could under favorable circumstances produce an optically-thick envelope that radiates with a thermal spectrum at the Eddington limit, 10^{44} erg/s, for tens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59add7de29d65a7fde2da64a7dd79b39
Autor:
John N. Bahcall, Andrew Ulmer
By comparing neutrino fluxes and central temperatures calculated from 1000 detailed numerical solar models, we derive improved scaling laws which show how each of the neutrino fluxes depends upon the central temperature (flux $\propto T^m$); we also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d69089327961888c3f57305ee8e0a1e8
http://arxiv.org/abs/astro-ph/9602012
http://arxiv.org/abs/astro-ph/9602012
Autor:
Andrew Ulmer, Ralph A. M. J. Wijers
Publikováno v:
Astrophysical Journal, 439(1), 303-306. IOP Publishing Ltd.
We examine the width of the gamma-ray burst (GRB) luminosity function through the distribution of GRB peak count rates, C$_{\rm{peak}}$, as detected by BATSE (\cite{batse:93}). In the context of galactic corona spatial distribution models, we attempt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91804f15ed4ffb29a040941d9034ce1f
https://dare.uva.nl/personal/pure/en/publications/the-width-of-the-gammaray-burst-luminosity-function(42e4c7a3-e631-4ba6-8009-e25c31cfc6e0).html
https://dare.uva.nl/personal/pure/en/publications/the-width-of-the-gammaray-burst-luminosity-function(42e4c7a3-e631-4ba6-8009-e25c31cfc6e0).html
Publikováno v:
Astrophysical Journal, 440(1), L9-L12. IOP Publishing Ltd.
Scopus-Elsevier
Scopus-Elsevier
We examine the width of the gamma ray burst luminosity function through the distribution of Gamma Ray Burst (GRB) peak fluxes as detected by the Pioneer Venus Orbiter (PVO) and the Burst and Transient Source Experiment (BATSE). The strength of the an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1598d8c6a95ac1a4ab1a045c2446c47
https://dare.uva.nl/personal/pure/en/publications/constraints-on-the-gammaray-burst-luminosity-function-from-pioneer-venus-orbiter-and-batse-observations(403c454b-8fd7-4866-a316-1995c9f7fcb2).html
https://dare.uva.nl/personal/pure/en/publications/constraints-on-the-gammaray-burst-luminosity-function-from-pioneer-venus-orbiter-and-batse-observations(403c454b-8fd7-4866-a316-1995c9f7fcb2).html
Autor:
Andrew Ulmer
Bursts from soft gamma repeaters have been shown to be super-Eddington by a factor of 1000 and have been persuasively associated with compact objects. Here, a model of super-Eddington radiation transfer on the surface of a strongly magnetic ($\geq 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5da6651ad63ee47d47d623bb622552fc
http://arxiv.org/abs/astro-ph/9408051
http://arxiv.org/abs/astro-ph/9408051