Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Calvelo, D"'
Autor:
Corbel, S., Aussel, H., Broderick, J. W., Chanial, P., Coriat, M., Maury, A. J., Buxton, M., Tzioumis, J. A. Tomsick A., Markoff, S., Rodriguez, J., Bailyn, C., Brocksopp, C., Fender, R., Petrucci, P. O., Cadolle-Bel, M., Calvelo, D., Harvey-Smith, L.
Galactic black hole binaries produce powerful outflows with emit over almost the entire electromagnetic spectrum. Here, we report the first detection with the Herschel observatory of a variable far-infrared source associated with the compact jets of
Externí odkaz:
http://arxiv.org/abs/1303.2551
Autor:
Emmanoulopoulos, D., Papadakis, I. E., McHardy, I. M., Arevalo, P., Calvelo, D. E., Uttley, P.
We present the first robust evidence of an anti-correlation between the X-ray photon index, \Gamma, and the X-ray luminosity in a single low luminosity active galactic nuclei (LLAGN), NGC 7213. Up to now, such anti-correlation trends have been seen o
Externí odkaz:
http://arxiv.org/abs/1205.3524
We present results from the first successful millimetre (combined 33 GHz and 35 GHz) observations of the neutron star X-ray binary Circinus X-1, using the Australia Telescope Compact Array. The source was clearly detected in all three observing epoch
Externí odkaz:
http://arxiv.org/abs/1110.3997
We present results from the first radio observations of a complete orbit (~ 17 days) of the neutron star X-ray binary Circinus X-1 using the Australia Telescope Compact Array Broadband Backend, taken while the system was in an historically faint stat
Externí odkaz:
http://arxiv.org/abs/1108.5973
We have conducted a deep radio survey of a sample of black hole X-ray binaries in the hard and quiescent states, to determine whether any systems were sufficiently bright for astrometric follow-up with high-sensitivity very long baseline interferomet
Externí odkaz:
http://arxiv.org/abs/1106.0097
Autor:
Bell, M. E., Tzioumis, T., Uttley, P., Fender, R. P., Arevalo, P., Breedt, E., McHardy, I., Calvelo, D. E., Jamil, O., Koerding, E.
We present the results of a ~ 3 year campaign to monitor the low luminosity active galactic nucleus (LLAGN) NGC 7213 in the radio (4.8 and 8.4 GHz) and X-ray bands (2-10 keV). With a reported X-ray Eddington ratio of 7 x 10^-4 L_Edd, NGC 7213 can be
Externí odkaz:
http://arxiv.org/abs/1009.2430
Autor:
Sell, P. H., Heinz, S., Calvelo, D. E., Tudose, V., Soleri, P., Fender, R. P., Jonker, P. G., Schulz, N. S., Brandt, W. N., Nowak, M. A., Wijnands, R., van der Klis, M., Casella, P.
Publikováno v:
Astrophysical Journal Letters 719 (2010) L194-L198
We report the discovery of multi-scale X-ray jets from the accreting neutron star X-ray binary, Circinus X-1. The bipolar outflows show wide opening angles and are spatially coincident with the radio jets seen in new high-resolution radio images of t
Externí odkaz:
http://arxiv.org/abs/1008.0647
Autor:
Calvelo, D. E., Fender, R. P., Russell, D. M., Gallo, E., Corbel, S., Tzioumis, A. K., Bell, M. E., Lewis, F., Maccarone, T. J.
We present the results of radio observations of the black hole binaries GRO J1655-40 and XTE J1550-564 in quiescence, with the upgraded Australia Telescope Compact Array. Neither system was detected. Radio flux density upper limits (3 sigma) of 26 mi
Externí odkaz:
http://arxiv.org/abs/1007.2313
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
Publikováno v:
In Artificial Intelligence In Medicine 2000 19(3):203-223
