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pro vyhledávání: '"Ozel M."'
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XMM-Newton Observations of Luminous Sources in the Nearby Galaxies: NGC 4395, NGC 4736, and NGC 4258
We present results from a study of the non-nuclear discrete sources in a sample of three nearby spiral galaxies (NGC 4395, NGC 4736, and NGC 4258) based on XMM-Newton archival data supplemented with Chandra data for spectral and timing analyses. A to
Externí odkaz:
http://arxiv.org/abs/1301.1040
We have identified nine new SNR candidates in M74 with [S II]/H$\alpha$ $\geq$ 0.4 as the basic criterion. We obtain [S II]/H$\alpha$ ratio in the range from 0.40 to 0.91 and H$\alpha$ intensities from 2.8 $\times$ $10^{-15}$ erg cm$^{-2}$ s$^{-1}$ t
Externí odkaz:
http://arxiv.org/abs/1005.0149
Autor:
Yuan, F., Schady, P., Racusin, J. L., Willingale, R., Kruhler, T., O'Brien, P. T., Greiner, J., Oates, S. R., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Barthelmy, S. D., Filgas, R., Flewelling, H. A., Gehrels, N., Gogus, E., Guver, T., Horns, D., Kiziloglu, U., Krimm, H. A., McKay, T. A., Ozel, M. E., Pandey, S. B., Phillips, A., Quimby, R. M., Rowell, G., Rujopakarn, W., Schaefer, B. E., Vestrand, W. T., Wheeler, J. C., Wren, J., Zheng, W.
We present a multi-wavelength study of GRB 081008, at redshift 1.967, by Swift, ROTSE-III and GROND. Compared to other Swift GRBs, GRB 081008 has a typical gamma-ray isotropic equivalent energy output (10^53 erg) during the prompt phase, and displaye
Externí odkaz:
http://arxiv.org/abs/1002.0581
Autor:
Rykoff, E. S., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Barthelmy, S. D., Flewelling, H. A., Gehrels, N., Gogus, E., Guver, T., Kiziloglu, U., Krimm, H. A., McKay, T. A., Ozel, M., Phillips, A., Quimby, R. M., Rowell, G., Rujopakarn, W., Schaefer, B. E., Smith, D. A., Vestrand, W. T., Wheeler, J. C., Wren, J., Yuan, F., Yost, S. A.
Publikováno v:
Astrophys.J.702:489-505,2009
We report on a complete set of early optical afterglows of gamma-ray bursts (GRBs) obtained with the ROTSE-III telescope network from March 2005 through June 2007. This set is comprised of 12 afterglows with early optical and Swift/XRT observations,
Externí odkaz:
http://arxiv.org/abs/0904.0261
Autor:
Yost, S. A., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Barthelmy, S., Gehrels, N., Gogus, E., Guver, T., Horns, D., Kiziloglu, U., Krimm, H. A., McKay, T. A., Ozel, M., Phillips, A., Quimby, R. M., Rowell, G., Rujopakarn, W., Rykoff, E. S., Schaefer, B. E., Smith, D. A., Swan, H. F., Vestrand, W. T., Wheeler, J. C., Wren, J., Yuan, F.
We present several cases of optical observations during gamma-ray bursts (GRBs) which resulted in prompt limits but no detection of optical emission. These limits constrain the prompt optical flux densities and the optical brightness relative to the
Externí odkaz:
http://arxiv.org/abs/0707.3132
Autor:
Rykoff, E. S., Mangano, V., Yost, S. A., Sari, R., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Barthelmy, S. D., Burrows, D. N., Gehrels, N., Gogus, E., Horns, D., Kiziloglu, U., Krimm, H. A., McKay, T. A., Ozel, M., Phillips, A., Quimby, R. M., Rowell, G., Rujopakarn, W., Schaefer, B. E., Smith, D. A., Swan, H. F., Vestrand, W. T., Wheeler, J. C., Wren, J., Yuan, F.
Publikováno v:
Astrophys.J.638:L5-L8,2006
The ROTSE-IIIc telescope at the H.E.S.S. site, Namibia, obtained the earliest detection of optical emission from a Gamma-Ray Burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The optical lightcurve does not fade or brighten signi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601350
Autor:
Yost, S. A., Alatalo, K., Rykoff, E. S., Aharonian, F., Akerlof, C. W., Ashley, M. C. B., Blake, C. H., Bloom, J. S., Boettcher, M., Falco, E. E., Gogus, E., Guver, T., Halpern, J. P., Horns, D., Joshi, M., Kiziloglu, U., McKay, T. A., Mirabal, N., Ozel, M., Phillips, A., Quimby, R. M., Rujopakarn, W., Schaefer, B. E., Shields, J. C., Skrutskie, M., Smith, D. A., Starr, D. L., Swan, H. F., Szentgyorgi, A., Vestrand, W. T., Wheeler, J. C., Wren, J.
Publikováno v:
Astrophys.J.636:959-966,2006
We present lightcurves of the afterglow of GRB050502A, including very early data at t-t_{GRB} < 60s. The lightcurve is composed of unfiltered ROTSE-IIIb optical observations from 44s to 6h post-burst, R-band MDM observations from 1.6 to 8.4h post-bur
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509594
Autor:
Rykoff, E. S., Yost, S. A., Krimm, H. A., Aharonian, F., Akerlof, C. W., Alatalo, K., Ashley, M. C. B., Barthelmy, S. D., Gehrels, N., Guver, T., Horns, D., Kiziloglu, U., McKay, T. A., Ozel, M., Phillips, A., Quimby, R. M., Rujopakarn, W., Schaefer, B. E., Smith, D. A., Swan, H. F., Vestrand, W. T., Wheeler, J. C., Wren, J.
Publikováno v:
Astrophys.J.631:L121-L124,2005
The ROTSE-IIIa telescope at Siding Spring Observatory, Australia, detected prompt optical emission from Swift GRB 050401. In this letter, we present observations of the early optical afterglow, first detected by the ROTSE-IIIa telescope 33 s after th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508495
Autor:
Rykoff, E. S., Aharonian, F., Akerlof, C. W., Alatalo, K., Ashley, M. C. B., Guver, T., Horns, D., Kehoe, R. L., Kiziloglu, U., McKay, T. A., Ozel, M., Phillips, A., Quimby, R. M., Schaefer, B. E., Smith, D. A., Swan, H. F., Vestrand, W. T., Wheeler, J. C., Wren, J., Yost, S. A.
Publikováno v:
Astrophys.J.631:1032-1038,2005
We present the results of a search for untriggered gamma-ray burst (GRB) afterglows with the Robotic Optical Transient Search Experiment-III (ROTSE-III) telescope array. This search covers observations from September 2003 to March 2005. We have an ef
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506442