Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Vrtilek, S."'
Autor:
Dickey, John M., Vrtilek, S. D., McCollough, Michael, Boroson, Bram, Tomsick, John A., Bailyn, Charles, Blanchard, Jay M., Johnson, Charlotte
The rapid variability of X-ray binaries produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in their vari
Externí odkaz:
http://arxiv.org/abs/2306.16663
X-ray Binaries (XRBs) consist of a compact object that accretes material from an orbiting secondary star. The most secure method we have for determining if the compact object is a black hole is to determine its mass: this is limited to bright objects
Externí odkaz:
http://arxiv.org/abs/2204.00346
Symbiotic stars show emission across the electromagnetic spectrum from a wide array of physical processes. At cm-waves both synchrotron and thermal emission is seen, often highly variable and associated with outbursts in the optical and X-rays. Most
Externí odkaz:
http://arxiv.org/abs/2102.07340
Autor:
Islam, Nazma, Vrtilek, S. D., Boroson, Bram, Kim, D. -W., O'Sullivan, E., McCollough, M. L., Fabbiano, G., Anderson, C., Burke, D. J., D'Abrusco, R., Fruscione, A., Lauer, J. L., Morgan, D., Mossman, A., Paggi, A., Trinchieri, G.
X-ray binaries exhibit a wide range of properties but there are few accepted methods to determine the nature of the compact object. Color-Color-Intensity diagrams have been suggested as a means of distinguishing between systems containing black holes
Externí odkaz:
http://arxiv.org/abs/2007.05810
Autor:
Fabbiano, G., Elvis, M., Accomazzi, A., Berriman, G. B., Brickhouse, N., Bose, S., Carrera, D., Chilingarian, I., Civano, F., Czerny, B., D'Abrusco, R., Diemer, B., Drake, J., Meibody, R. Emami, Farah, J. R., Fazio, G. G., Feigelson, E., Fornasini, F., Gallagher, Jay, Grindlay, J., Hernquist, L., James, D. J., Karovska, M., Kashyap, V., Kim, D. -W., Lacy, G. M., Lazio, J., Lusso, E., Maksym, W. P., Galarza, R. Martinez, Mazzarella, J., Ntampaka, M., Risaliti, G., Sanders, D., Scoville, N., Shapiro, I., Siemiginowska, A., Smth, A., Smith, S., Szentgyorgyi, A., Tacchella, S., Thakar, A., Tolls, V., Vrtilek, S., Wilkes, B., Wilner, D., Willner, S. P., Wolk, S. J., Zhao, J. -H.
We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We propose exploration as the central question for the Decadal Committee's
Externí odkaz:
http://arxiv.org/abs/1903.06634
We present phase-resolved spectroscopic observations of the low-mass X-ray binary V926 Sco (4U 1735-44), covering the orbital period of 0.23d, obtained with the Walter Baade 6.5m Magellan Telescope at the Las Campanas Observatory in June 2010 and Jun
Externí odkaz:
http://arxiv.org/abs/1310.0806
Autor:
Calvelo, D. E., Vrtilek, S. D., Steeghs, D., Torres, M. A. P., Neilsen, J., Filippenko, A. V., Hernandez, J. I. Gonzalez
We present Doppler and modulation tomography of the X-ray nova XTE J1118+480 with data obtained during quiescence using the 10-m Keck II telescope. The hot spot where the gas stream hits the accretion disc is seen in H-Alpha, H-Beta, He I Lambda-5876
Externí odkaz:
http://arxiv.org/abs/0905.1491
(Shortened) Ultraviolet observations of the black hole X-ray binary Cygnus X-1 were obtained using the STIS on HSTubble. We detect P Cygni line features show strong, broad absorption components when the X-ray source is behind the companion star and n
Externí odkaz:
http://arxiv.org/abs/0710.3499
We present spectroscopic observations of the quiescent black hole binary A0620-00 with the the 6.5-m Magellan Clay telescope at Las Campanas Observatory. We measure absorption-line radial velocities of the secondary and make the most precise determin
Externí odkaz:
http://arxiv.org/abs/0710.3202
Autor:
Hickox, R. C., Vrtilek, S. D.
Publikováno v:
Astrophys.J.633:1064-1075,2005
We present pulse-phase X-ray spectroscopy of the high-mass X-ray pulsar SMC X-1 from five different epochs, using Chandra X-ray Observatory ACIS-S and XMM-Newton EPIC-pn data. The X-ray spectrum consistently shows two distinct components, a hard powe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506438