Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
Murphy, Michael T., Tzanavaris, Panayiotis, Webb, Jonathan K., Lovis, Christophe
Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
Murphy, Michael T., Tzanavaris, Panayiotis, Webb, Jonathan K., Lovis, Christophe
Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, Jonathan K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
Murphy, Michael T., Tzanavaris, Panayiotis, Webb, Jonathan K., Lovis, Christophe
Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Murphy, Michael T., Tzanavaris, Panayiotis, Webb, J. K., Lovis, Christophe
Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
Detection of broad 21-cm absorption at z(abs)=0.656 in the complex sight-line towards 3C 336 (2007)
Curran, Stephen J., Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report the detection of 21-cm absorption at z(abs) = 0.656 towards 1622 + 238 (3C 336). The line is very broad with a full width to half-maximum of 235 km s(-1), giving a velocity-integrated...
Murphy, Michael T., Tzanavaris, Panayiotis, Webb, J. K., Lovis, Christophe
Echelle spectrographs currently provide some of the most precise and detailed spectra in astronomy, the interpretation of which sometimes depends on the wavelength calibration accuracy. In some...
Tzanavaris, Panayiotis, Murphy, Michael T., Webb, J. K., Flambaum, Victor V., Curran, Stephen J.
Nine quasar absorption spectra at 21-cm and ultraviolet (UV) rest-frame wavelengths are used to estimate possible variations in x equivalent to alpha(2)g(p)mu, where alpha is the fine structure...
Tzanavaris, Panayiotis, Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Tzanavaris, Panayiotis, Webb, Jonathan K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Tzanavaris, Panayiotis, Webb, J. K., Murphy, Michael T., Flambaum, Victor V., Curran, Stephen J.
Abstract not available.
Tzanavaris, Panayiotis, Carswell, Robert F.
A new analysis of Keck/HIRES observations of the broad absorption line QSO APM 0827+5255 indicates that a number of intervening C IV absorbers give rise to absorption lines for which the observed...
Galactic winds in the intergalactic medium (2002)
Theuns, Tom, Viel, Matteo, Kay, Scott, Schaye, Joop, Carswell, Robert F., Tzanavaris, Panayiotis
We have performed hydrodynamical simulations to investigate the effects of galactic winds on the high-redshift (z=3) universe. Strong winds suppress the formation of low-mass galaxies significantly,...
Constraints on reionization from the thermal history of the intergalactic medium (2002)
Theuns, Tom, Schaye, Joop, Zaroubi, Saleem, Kim, Tae-Sun, Tzanavaris, Panayiotis, Carswell, Bob
The temperature of the diffuse, photo-heated intergalactic medium (IGM) depends on its reionization history because the thermal time scales are long. The widths of the hydrogen Lyman-alpha absorption...
Temperature fluctuations in the intergalactic medium (2001)
Theuns, Tom, Zaroubi, Saleem, Kim, Tae-Sun, Tzanavaris, Panayiotis, Carswell, Robert F.
The temperature of the low-density intergalactic medium is set by the balance between adiabatic cooling resulting from the expansion of the universe, and photo-heating by the UV-background. We have...