Zobrazeno 1 - 10
of 359
pro vyhledávání: '"HEILES, CARL"'
Autor:
Chen, Xunzhou, Ching, Tao-Chung, Li, Di, Heiles, Carl, Robishaw, Timothy, Du, Xuan, Krco, Marko, Jiang, Peng, Yang, Qingliang, Lu, Jiguang
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) has been fully operational since 11 January 2020. We present a comprehensive analysis of the beam structure for each of the 19 feed horns on FAST's L-band receiver across the Stokes I,
Externí odkaz:
http://arxiv.org/abs/2411.18865
Autor:
Ching, Tao-Chung, Heiles, Carl, Li, Di, Robishaw, Timothy, Chen, Xunzhou, Meng, Lingqi, Yue, You-Ling, Qian, Lei, Liu, Hong-Fei
We present the polarization calibration of the 19-beam receiver at 1420 MHz within the full illumination of the Five-hundred-meter Aperture Spherical Telescope from October 2018 to March 2023. We perform spider observations to characterize the on-axi
Externí odkaz:
http://arxiv.org/abs/2411.18763
Autor:
Steffes, Lucille, Rybarczyk, Daniel R., Stanimirović, Snežana, Dawson, J. R., Putman, Mary, Richter, Philipp, Gallagher III, John, Liszt, Harvey, Murray, Claire, Dickey, John, Heiles, Carl, Hernandez, Audra, Lindner, Robert, Liu, Yangyang, McClure-Griffiths, Naomi, Wong, Tony, Savage, Blair
Publikováno v:
Publ. Astron. Soc. Aust. 41 (2024) e094
The Magellanic Stream, a tidal tail of diffuse gas falling onto the Milky Way, formed by interactions between the Small and Large Magellanic Clouds, is primarily composed of neutral atomic hydrogen (HI). The deficiency of dust and the diffuse nature
Externí odkaz:
http://arxiv.org/abs/2410.12102
Autor:
Park, Gyueun, Lee, Min-Young, Bialy, Shmuel, Burkhart, Blakesley, Dawson, J. R., Heiles, Carl, Li, Di, Murray, Claire, Nguyen, Hiep, Hafner, Anita, Rybarczyk, Daniel R., Stanimirović, Snežana
In this paper, we investigate the conditions for the HI-to-H$_{2}$ transition in the solar neighborhood by analyzing HI emission and absorption measurements toward 58 Galactic lines of sight (LOSs) along with $^{12}$CO(1$-$0) (CO) and dust data. Base
Externí odkaz:
http://arxiv.org/abs/2307.09513
Autor:
Petzler, Anita, Dawson, J. R., Nguyen, Hiep, Heiles, Carl, Wardle, M., Lee, M. -Y., Murray, Claire E., Thompson, K. L., Stanimirovic, Snezana
We present observations of the four 2 Pi 3/2 J = 3/2 ground-rotational state transitions of the hydroxyl molecule (OH) along 107 lines of sight both in and out of the Galactic plane: 92 sets of observations from the Arecibo telescope and 15 sets of o
Externí odkaz:
http://arxiv.org/abs/2302.11116
Autor:
Ching, Tao-Chung, Li, Di, Heiles, Carl, Li, Zhi-Yun, Qian, Lei, Yue, Youling, Tang, Jing, Jiao, Sihan
Magnetic fields play an important role in the evolution of interstellar medium and star formation. As the only direct probe of interstellar field strength, credible Zeeman measurements remain sparse due to the lack of suitable Zeeman probes, particul
Externí odkaz:
http://arxiv.org/abs/2112.12644
Autor:
Tang, Ningyu, Li, Di, Luo, Gan, Heiles, Carl, Qin, Sheng-Li, Wang, Junzhi, Xia, Jifeng, Chen, Longfei
We present high-sensitivity CH 9 cm ON/OFF observations toward 18 extra-galactic continuum sources that have been detected with OH 18 cm absorption in the Millennium survey with the Arecibo telescope. CH emission was detected toward six of eighteen s
Externí odkaz:
http://arxiv.org/abs/2109.07822
Autor:
Murray, Claire E., Stanimirović, Snežana, Heiles, Carl, Dickey, John M., McClure-Griffiths, N. M., Lee, M. -Y., Goss, W. M., Killerby-Smith, Nicholas
Tracing the transition between the diffuse atomic interstellar medium (ISM) and cold, dense gas is crucial for deciphering the star formation cycle in galaxies. Here we present MACH, a new survey of cold neutral hydrogen (HI) absorption at $21\rm\,cm
Externí odkaz:
http://arxiv.org/abs/2106.15614
Autor:
Liu, Mengting, Krčo, Marko, Li, Di, Hobbs, George, Dawson, J. R., Heiles, Carl, Jameson, Andrew, Stanimirović, Snežana, Johnston, Simon, Dickey, John M.
Publikováno v:
The Astrophysical Journal Letters, 2021, Volume 911, Issue 1, id.L13, 9 pp
Optical depth variations in the Galactic neutral interstellar medium (ISM) with spatial scales from hundreds to thousands of astronomical units have been observed through HI absorption against pulsars and continuum sources, while extremely small stru
Externí odkaz:
http://arxiv.org/abs/2104.07897
Autor:
Reach, William T., Heiles, Carl
The diffuse interstellar medium is dynamic, and its chemistry and evolution is determined by shock fronts as well as photodissociation. Shocks are implied by the supersonic motions and velocity dispersion often statistically called "turbulence". We c
Externí odkaz:
http://arxiv.org/abs/2101.02139