Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Cohn, H. N."'
Autor:
Heinke, C. O., Ivanov, M. G., Koch, E. W., Andrews, R., Chomiuk, L., Cohn, H. N., Crothers, S., de Boer, T., Ivanova, N., Kong, A. K. H., Leigh, N. W. C., Lugger, P. M., Nelson, L., Parr, C. J., Rosolowsky, E. W., Ruiter, A. J., Sarazin, C. L., Shaw, A. W., Sivakoff, G. R., Berg, M. van den
The dynamical production of low-mass X-ray binaries and brighter cataclysmic variables (CVs) in dense globular clusters is well-established. We investigate how the X-ray emissivity of fainter X-ray binaries (principally CVs and coronally active binar
Externí odkaz:
http://arxiv.org/abs/2001.09476
Autor:
Shaw, A. W., Heinke, C. O., Steiner, A. W., Campana, S., Cohn, H. N., Ho, W. C. G., Lugger, P. M., Servillat, M.
X-ray spectra of quiescent low-mass X-ray binaries containing neutron stars can be fit with atmosphere models to constrain the mass and the radius. Mass-radius constraints can be used to place limits on the equation of state of dense matter. We perfo
Externí odkaz:
http://arxiv.org/abs/1803.00029
Autor:
Sandoval, L. E. Rivera, Berg, M. van den, Heinke, C. O., Cohn, H. N., Lugger, P. M., Anderson, J., Cool, A. M., Edmonds, P. D., Wijnands, R., Ivanova, N., Grindlay, J. E.
We present 22 new (+3 confirmed) cataclysmic variables (CVs) in the non core-collapsed globular cluster 47 Tucanae (47 Tuc). The total number of CVs in the cluster is now 43, the largest sample in any globular cluster so far. For the identifications
Externí odkaz:
http://arxiv.org/abs/1705.07100
Akademický článek
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Discovery of near-ultraviolet counterparts to millisecond pulsars in the globular cluster 47 Tucanae
Autor:
Rivera-Sandoval, L. E., Berg, M. van den, Heinke, C. O., Cohn, H. N., Lugger, P. M., Freire, P., Anderson, J., Serenelli, A. M., Althaus, L. G., Cool, A. M., Grindlay, J. E., Edmonds, P. D., Wijnands, R., Ivanova, N.
We report the discovery of the likely white dwarf companions to radio millisecond pulsars 47 Tuc Q and 47 Tuc S in the globular cluster 47 Tucanae. These blue stars were found in near-ultraviolet images from the Hubble Space Telescope for which we de
Externí odkaz:
http://arxiv.org/abs/1508.05291
Autor:
van den Berg, M, Rivera Sandoval, L E, Heinke, C O, Cohn, H N, Lugger, P M, Grindlay, J E, Edmonds, P D, Anderson, J, Catuneanu, A
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jun2024, Vol. 531 Issue 1, p1653-1670, 18p
Autor:
Heinke, C. O., Cohn, H. N., Lugger, P. M., Webb, N. A., Ho, W. C. G., Anderson, J., Campana, S., Bogdanov, S., Haggard, D., Cool, A. M., Grindlay, J. E.
We use Chandra and XMM observations of the globular clusters $\omega$ Cen and NGC 6397 to measure the spectrum of their quiescent neutron stars (NSs), and thus to constrain the allowed ranges of mass and radius for each. We also use Hubble Space Tele
Externí odkaz:
http://arxiv.org/abs/1406.1497
Autor:
Forestell, L. M., Heinke, C. O., Cohn, H. N., Lugger, P. M., Sivakoff, G. R., Bogdanov, S., Cool, A. M., Anderson, J.
We combine new and archival Chandra observations of the globular cluster NGC 6752 to create a deeper X-ray source list, and study the faint radio millisecond pulsars (MSPs) of this cluster. We detect four of the five MSPs in NGC 6752, and present evi
Externí odkaz:
http://arxiv.org/abs/1403.4624
We observed the globular cluster NGC 6652 with Chandra for 47.5 ks, detecting six known X-ray sources, as well as five previously undetected X-ray sources. Source A (XB 1832-330) is a well-known bright low-mass X-ray binary (LXMB). The second brighte
Externí odkaz:
http://arxiv.org/abs/1204.0552
Our 5 ks Chandra ACIS-S observation of the globular cluster NGC 6652 detected 7 X-ray sources, 3 of which are previously unidentified. This cluster hosts a well-known bright low-mass X-ray binary, source A (or XB 1832-330). Source B shows unusual rap
Externí odkaz:
http://arxiv.org/abs/1105.2975