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...
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...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, J. K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, Jonathan K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
Curran, Stephen J., Whiting, Matthew T., Murphy, Michael T., Webb, J. K., Longmore, Steven N., Pihlstrom, Ylva M., ...
We are currently undertaking a large survey for redshifted atomic and molecular absorption lines at radio frequencies. In this paper, we present the results from the first phase of this survey: the...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have attributed...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, Jonathan K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have...
Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman α systems (2005)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Purcell, Cormac R.
We investigate the practice of assigning high spin temperatures to damped Lyman α absorption systems (DLAs) not detected in H i 21-cm absorption. In particular, Kanekar & Chengalur have attributed...
Atomic and molecular absorption at high redshift (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Pihlstrom, Ylva M.
Strong constraints on possible variations in fundamental constants can be derived from HI 21-cm and molecular rotational absorption lines observed towards quasars. With the aim of forming a...
Molecular fraction limits in damped Lyman alpha absorption systems (2004)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Bolatto, A. D., Bower, Geoffrey C.
We have used the Green Bank Telescope (GBT) and Berkeley-Illinois-Maryland Association (BIMA) array to search for redshifted millimetre absorption in a sample of damped Lyman alpha absorption systems...
Atomic and molecular absorption at high redshift (2004)
Curran, Stephen J., Webb, J. K., Murphy, Michael T., Pihlstrom, Ylva M.
Strong constraints on possible variations in fundamental constants can be derived from HI 21-cm and molecular rotational absorption lines observed towards quasars. With the aim of forming a...
Molecular fraction limits in damped Lyman alpha absorption systems (2004)
Curran, Stephen J., Murphy, Michael T., Pihlstrom, Ylva M., Webb, J. K., Bolatto, A. D., Bower, Geoffrey C.
We have used the Green Bank Telescope (GBT) and Berkeley-Illinois-Maryland Association (BIMA) array to search for redshifted millimetre absorption in a sample of damped Lyman alpha absorption systems...
A 22-GHz search for molecular absorption at z similar to 3 with the upgraded ATCA (2003)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report a λ. ≲ 1 cm search for rotational molecular absorption towards quasars, now possible with the upgraded Australia Telescope Compact Array (ATCA). The targets were PKS 0201+113, PKS...
A 22-GHz search for molecular absorption at z similar to 3 with the upgraded ATCA (2003)
Curran, Stephen J., Murphy, Michael T., Webb, J. K., Pihlstrom, Ylva M.
We report a λ. ≲ 1 cm search for rotational molecular absorption towards quasars, now possible with the upgraded Australia Telescope Compact Array (ATCA). The targets were PKS 0201+113, PKS...
Radio studies of circumnuclear gas in active galaxies / (2001)
Pihlstrom, Ylva M., Onsala Rymdobservatorium., Chalmers Tekniska Högskola.
Thesis (Ph. D.)--Chalmers University of Technology, 2001.