Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Lamy, H."'
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
We present new optical circular polarization measurements with typical uncertainties < 0.1% for a sample of 21 quasars. All but two objects have null circular polarization. We use this result to constrain the polarization due to photon-pseudoscalar m
Externí odkaz:
http://arxiv.org/abs/1009.4049
Publikováno v:
ASP Conf. Series 449 (2011) 441
Based on a sample of 355 quasars with significant optical polarization, we found that quasar polarization vectors are not randomly oriented over the sky as naturally expected. The probability that the observed distribution of polarization angles is d
Externí odkaz:
http://arxiv.org/abs/0809.3088
Publikováno v:
Astron.Astrophys.441:915-930,2005
Based on a new sample of 355 quasars with significant optical polarization and using complementary statistical methods, we confirm that quasar polarization vectors are not randomly oriented over the sky with a probability often in excess of 99.9%. Th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507274
Publikováno v:
Astron.Astrophys.433:757,2005
New linear polarization measurements (mainly in the V band) are presented for 203 quasi-stellar objects (QSOs). The sample is made up of 94 QSOs located in the North Galactic Pole (NGP) region and of 109 QSOs in the South Galactic Pole (SGP) region.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507023
Autor:
Lamy, H., Hutsemekers, D.
Publikováno v:
Astron.Astrophys. 427 (2004) 107-123
We report the results of statistical tests performed on a sample of 139 broad absorption line (BAL) QSOs with good quality optical spectra and/or optical polarization data. Correlations between optical indices and the polarization degree p_0 are syst
Externí odkaz:
http://arxiv.org/abs/astro-ph/0408476
Publikováno v:
Astrophys.J. 606 (2004) 542-554
Because of the semi-collisional nature of the solar wind, the collisionless or exospheric approach as well as the hydrodynamic one are both inaccurate. However, the advantage of simplicity makes them useful for enlightening some basic mechanisms of s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402358
Autor:
Hutsemekers, D., Lamy, H.
Correlations between BAL QSO intrinsic properties and polarization have been searched for. Some results are summarized here, providing possible constraints on BAL outflow models.
Comment: 4 pages, 5 figures; to appear in ``Mass Outflow in Active
Comment: 4 pages, 5 figures; to appear in ``Mass Outflow in Active
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109528
Autor:
Hutsemekers, D., Lamy, H.
In order to verify the existence of coherent orientations of quasars polarization vectors on very large scales, we have obtained new polarization measurements for a sample of quasars located in a given region of the three-dimensional Universe where t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012182
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Recent observations with spectro-photo-polarimeters have shown that the auroral emissions from oxygen at 577.7 nm (green line), and from the N2+ 1st negative band emissions at 427.8 nm (blue line) and 391.4 nm (purple line) are polarized at a few per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cf955b043d4932fcc2901aad345263b