Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Loehmer, O."'
The behaviour of the pulsar spectrum at high radio frequencies can provide decisive information about the nature of the radio emission mechanism. We report recent observations of a selected sample of pulsars at lambda=9mm (32 GHz) with the 100-m Effe
Externí odkaz:
http://arxiv.org/abs/0802.1339
Autor:
Corongiu, A., Kramer, M., Stappers, B. W., Lyne, A. G., Jessner, A., Possenti, A., D'Amico, N., Loehmer, O.
Aims: The binary pulsar PSR J1811-1736 has been identified, since its discovery, as a member of a double neutron star system. Observations of such binary pulsars allow the measurement of general relativistic effects, which in turn lead to information
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611436
Publikováno v:
Astrophys.J. 621 (2005) 388-392
We present the results of precision timing observations of the binary millisecond pulsar PSR J1640+2224. Combining the pulse arrival time measurements made with the Effelsberg 100-m radio telescope and the Arecibo 305-m radio telescope, we have exten
Externí odkaz:
http://arxiv.org/abs/astro-ph/0411742
Publikováno v:
Astron.Astrophys. 426 (2004) 631-640
We present results of timing measurements of the binary millisecond pulsar PSR J2145-0750. Combining timing data obtained with the Effelsberg and Lovell radio telescopes we measure a significant timing parallax of 2.0(6) mas placing the system at 500
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406634
Publikováno v:
Astron.Astrophys. 425 (2004) 763-766
We present observations of nine radio pulsars using the Heinrich-Hertz-Telescope at \lambda 0.87mm and the IRAM 30-m telescope at \lambda 1.2mm in search for a cold dust around these sources. Five of the program pulsars have been observed for the fir
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406602
Publikováno v:
Astron.Astrophys. 425 (2004) 569-575
In this paper we report multi-frequency measurements of pulse broadening times (tau_d) for nine medium dispersion measure (DM $\approx 150-400$ pc cm$^{-3}$) pulsars observed over a wide frequency range. The low frequency data at 243, 325 and 610 MHz
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406601
Publikováno v:
Astron.Astrophys. 419 (2004) 269-276
We present XMM-Newton MOS imaging and PN timing data of the faint millisecond pulsars PSR J0751+1807 and PSR J1012+5307. We find 46 sources in the MOS field of view of PSR J0751+1807 searching down to an unabsorbed flux limit of 3 x 10^-15 ergs cm^-2
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402102
Autor:
Nicastro, L., Cusumano, G., Loehmer, O., Kramer, M., Kuiper, L., Hermsen, W., Mineo, T., Becker, W.
Publikováno v:
Astron.Astrophys.413:1065-1072,2004
We present the results of a BeppoSAX observation of the fastest rotating pulsar known: PSR B1937+21. The ~200 ks observation (78.5 ks MECS/34 ks LECS on-source time) allowed us to investigate with high statistical significance both the spectral prope
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310299
Publikováno v:
Astrophys.J.593:L31-L34,2003
We present results of timing observations of the 143-ms pulsar J0538+2817 that provide a proper motion measurement which clearly associates the pulsar with the supernova remnant S147. We measure a proper motion of 67$_{-22}^{+48}$ mas yr$^{-1}$, impl
Externí odkaz:
http://arxiv.org/abs/astro-ph/0306628
We review the observational evidence for geodetic precession in PSR B1913+16 and present the latest observations and results from modelling the system geometry and beam.
Comment: 4 pages,to appear in "Radio Pulsars" (ASP Conf. Ser.), eds. M. Bai
Comment: 4 pages,to appear in "Radio Pulsars" (ASP Conf. Ser.), eds. M. Bai
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301146