Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Minter, Anthony H."'
We have used the Green Bank Telescope (GBT) to search for the OH molecule at several locations in the Smith Cloud, one of the most prominent of the high-velocity clouds that surround the Milky Way. Five positions with a high HI column density were se
Externí odkaz:
http://arxiv.org/abs/2403.08704
Autor:
Stinebring, Dan R., Rickett, Barney J., Minter, Anthony H., Hill, Alex S., Jussila, Adam P., Mathis, Lele, McLaughlin, Maura A., Ocker, Stella Koch, Ransom, Scott M.
Context: By providing information about the location of scattering material along the line of sight (LoS) to pulsars, scintillation arcs are a powerful tool for exploring the distribution of ionized material in the interstellar medium. Here, we prese
Externí odkaz:
http://arxiv.org/abs/2207.08756
Autor:
Dutta, Prasun, Chengalur, Jayaram N., Roy, Nirupam, Goss, W. M., Arjunwadkar, Mihir, Minter, Anthony H., Brogan, Crystal L., Lazio, T. J. W.
Publikováno v:
2014, MNRAS, 442, 647
We use MERLIN, VLA and VLBA observations of Galactic \HI absorption towards 3C~138 to estimate the structure function of the \HI opacity fluctuations at AU scales. Using Monte Carlo simulations, we show that there is likely to be a significant bias i
Externí odkaz:
http://arxiv.org/abs/1405.1696
Autor:
Maan, Yogesh, Deshpande, Avinash A., Chandrashekar, Vinutha, Chennamangalam, Jayanth, Rao, K. B. Raghavendra, Somashekar, R., Anderson, Gary, Ezhilarasi, M. S., Sujatha, S., Kasturi, S., Sandhya, P., Bauserman, Jonah, Duraichelvan, R., Amiri, Shahram, Aswathappa, H. A., Barve, Indrajit V., Sarabagopalan, G., Ananda, H. M., Beaudet, Carla, Bloss, Marty, Dhamnekar, Deepa B., Egan, Dennis, Ford, John, Krishnamurthy, S., Mehta, Nikhil, Minter, Anthony H., Nagaraja, H. N., Narayanaswamy, M., O'Neil, Karen, Raja, Wasim, Sahasrabudhe, Harshad, Shelton, Amy, Srivani, K. S., Venugopal, H. V., Viswanathan, Salna T.
We report the design and development of a self-contained multi-band receiver (MBR) system, intended for use with a single large aperture to facilitate sensitive & high time-resolution observations simultaneously in 10 discrete frequency bands samplin
Externí odkaz:
http://arxiv.org/abs/1210.2573
Publikováno v:
2012, ApJ, 749, 144
The structure function of opacity fluctuations is a useful statistical tool to study tiny scale structures of neutral hydrogen. Here we present high resolution observation of HI absorption towards 3C 138, and estimate the structure function of opacit
Externí odkaz:
http://arxiv.org/abs/1203.2925
Autor:
Minter, Anthony H.
OH absorption against PSR B1718-35 at (l,b) =351.688,+0.671 has been discovered at 1665 and 1667 MHz using the Green Bank Telescope. The absorption appears to arise at the interface of an HII region and a molecular cloud which are likely associated w
Externí odkaz:
http://arxiv.org/abs/0801.0819
We have used the Green Bank Telescope to measure HI absorption against the anomalous X-ray pulsar XTE J1810-197. Assuming a flat rotation curve, we find that XTE J1810-197 is located at a distance of 3.4(+0.5,-0.7) kpc. For a rotation curve that inco
Externí odkaz:
http://arxiv.org/abs/0705.4403
We have measured the HI absorption towards pulsar B0329+54 using the Green Bank Telescope during 18 epochs between 2002 June 30 and 2003 October 10. Three observing epochs consisted of a continuous period of 20 hours each, while fifteen epochs were 1
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506046
Publikováno v:
Astrophys.J. 633 (2005) 309-316
The 2s_{1/2} state of hydrogen is metastable and overpopulated in HII regions. In addition, the 2p states may be pumped by ambient Lyman-alpha radiation. Fine structure transitions between these states may be observable in HII regions at 1.1 GHz (2s_
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505456
Publikováno v:
Astrophys.J. 617 (2004) 350-359
We observe significant dust-correlated emission outside of H II regions in the Green Bank Galactic Plane Survey (-4 < b < 4 degrees) at 8.35 and 14.35 GHz. The rising spectral slope rules out synchrotron and free-free emission as majority constituent
Externí odkaz:
http://arxiv.org/abs/astro-ph/0408292