Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Hartman, J M"'
Autor:
Price, D. C., Greenhill, L. J., Fialkov, A., Bernardi, G., Garsden, H., Barsdell, B. R., Kocz, J., Anderson, M. M., Bourke, S. A., Craig, J., Dexter, M. R., Dowell, J., Eastwood, M. W., Eftekhari, T., Ellingson, S. W., Hallinan, G., Hartman, J. M., Kimberk, R., Lazio, T. J. W., Leiker, S., MacMahon, D., Monroe, R., Schinzel, F., Taylor, G. B., Tong, E., Werthimer, D., Woody, D. P.
The Large-Aperture Experiment to Detect the Dark Age (LEDA) was designed to detect the predicted O(100)mK sky-averaged absorption of the Cosmic Microwave Background by Hydrogen in the neutral pre- and intergalactic medium just after the cosmological
Externí odkaz:
http://arxiv.org/abs/1709.09313
Autor:
Obenberger, K. S., Taylor, G. B., Hartman, J. M., Clarke, T. E., Dowell, J., Dubois, A., Dubois, D., Henning, P. A., Lazio, J., Michalak, S., Schinzel, F. K.
We present a description of the Prototype All-Sky Imager (PASI), a backend correlator and imager of the first station of the Long Wavelength Array (LWA1). PASI cross-correlates a live stream of 260 dual-polarization dipole antennas of the LWA1, creat
Externí odkaz:
http://arxiv.org/abs/1503.05150
Autor:
Obenberger, K. S., Taylor, G. B., Hartman, J. M., Dowell, J., Ellingson, S. W., Helmboldt, J. F., Henning, P. A., Kavic, M., Schinzel, F. K., Simonetti, J. H., Stovall, K., Wilson, T. L.
Publikováno v:
ApJ, 788, L26 2014
We present the findings from the Prototype All-Sky Imager (PASI), a backend correlator of the first station of the Long Wavelength Array (LWA1), which has recorded over 11,000 hours of all-sky images at frequencies between 25 and 75 MHz. In a search
Externí odkaz:
http://arxiv.org/abs/1405.6772
Autor:
Obenberger, K. S., Hartman, J. M., Taylor, G. B., Craig, J., Dowell, J., Helmboldt, J. F., Henning, P. A., Schinzel, F. K., Wilson, T. L.
As a backend to the first station of the Long Wavelength Array (LWA1) the Prototype All Sky Imager (PASI) has been imaging the sky $>$ -26$^{\circ}$ declination during 34 Gamma Ray Bursts (GRBs) between January 2012 and May 2013. Using this data we w
Externí odkaz:
http://arxiv.org/abs/1403.3674
Autor:
Patruno, A., Bult, P., Gopakumar, A., Hartman, J. M., Wijnands, R., van der Klis, M., Chakrabarty, D.
The accreting millisecond pulsar SAX J1808.4-3658 has shown a peculiar orbital evolution in the past with an orbital expansion much faster than expected from standard binary evolutionary scenarios. Previous limits on the pulsar spin frequency derivat
Externí odkaz:
http://arxiv.org/abs/1111.6967
Autor:
Hartman, J. M., Patruno, A., Chakrabarty, D., Markwardt, C. B., Morgan, E. H., van der Klis, M., Wijnands, R.
Publikováno v:
Astrophys.J.702:1673-1678,2009
The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4-3658 during 1998-2008. We present a pulse timing study of the most recent outburst and compare it with the previous timing solu
Externí odkaz:
http://arxiv.org/abs/0902.2112
Autor:
Krimm, H. A., Markwardt, C. B., Deloye, C. J., Romano, P., Chakrabarty, D., Campana, S., Cummings, J. R., Galloway, D. K., Gehrels, N., Hartman, J. M., Kaaret, P., Morgan, E. H., Tueller, J.
Publikováno v:
Erratum-ibid.703:L183,2009
We report on the discovery by the Swift Gamma-Ray Burst Explorer of the eighth known transient accretion-powered millisecond pulsar, SWIFT J1756.9-2508, as part of routine observations with the Swift Burst Alert Telescope hard X-ray transient monitor
Externí odkaz:
http://arxiv.org/abs/0709.1693
Helium atoms are strongly attracted to the interstitial channels within a bundle of carbon nanotubes. The strong corrugation of the axial potential within a channel can produce a lattice gas system where the weak mutual attraction between atoms in ne
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908234
Akademický článek
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Autor:
Alessandro Patruno, Hartman, J. M., Wijnands, R., Klis, M., Chakrabarty, D., Morgan, E. H., Markwardt, C. B.
Publikováno v:
The astronomer's telegram, 1760
NASA Astrophysics Data System
NASA Astrophysics Data System
Since the start of its current X-ray outburst on 2008 Sep 21 (ATel #1728), the accretion-powered millisecond pulsar SAX J1808.4-3658 has been observed for roughly 10 ks per day with the RXTE PCA. Coherent 401 Hz pulsations are clear throughout at an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::aa6400beeb93d235905e776b2ae4cc7b
https://dare.uva.nl/personal/pure/en/publications/pulse-timing-of-the-ongoing-outburst-of-sax-j180843658-with-rxte(9d3017d0-93e1-401f-974e-67161a068022).html
https://dare.uva.nl/personal/pure/en/publications/pulse-timing-of-the-ongoing-outburst-of-sax-j180843658-with-rxte(9d3017d0-93e1-401f-974e-67161a068022).html