Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Chhetri, Rajan"'
Autor:
Aditya, J. N. H. S., Yoon, Hyein, Allison, James R., An, Tao, Chhetri, Rajan, Curran, Stephen J., Darling, Jeremy, Emig, Kimberly L., Glowacki, Marcin, Kerrison, Emily, Koribalski, Bärbel S., Mahony, Elizabeth K., Moss, Vanessa A., Morgan, John, Sadler, Elaine M., Soria, Roberto, Su, Renzhi, Weng, Simon, Whiting, Matthew
We report an ASKAP search for associated HI 21-cm absorption against bright radio sources from the Molonglo Reference Catalogue (MRC) 1-Jy sample. The search uses pilot survey data from the ASKAP First Large Absorption Survey in \hi (FLASH) covering
Externí odkaz:
http://arxiv.org/abs/2310.14571
We present a catalogue of over 7000 sources from the GLEAM survey which have significant structure on sub-arcsecond scales at 162MHz. The compact nature of these sources was detected and quantified via their Interplanetary Scintillation (IPS) signatu
Externí odkaz:
http://arxiv.org/abs/2210.05400
Autor:
Chhetri, Rajan, Morgan, John, Moss, Vanessa, Ekers, Ron, Scott, Danica, Bannister, Keith, Day, Cherie K., Deller, Adam T., Shannon, Ryan M.
We report on a measurement of interplanetary scintillation (IPS) using the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope. Although this proof-of-concept observation utilised just 3 seconds of data on a single source, this is no
Externí odkaz:
http://arxiv.org/abs/2208.04981
Autor:
Drouart, Guillaume, Seymour, Nick, Broderick, Jess W., Afonso, José, Chhetri, Rajan, De Breuck, Carlos, Emonts, Bjorn, Galvin, Tim J., Lehnert, Matthew D., Morgan, John, Stern, Daniel, Vernet, Joël, Wright, Nigel
Publikováno v:
2021PASA...38...49D
We previously reported a putative detection of a radio galaxy at z=10.15, selected from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. The redshift of this source, GLEAM J0917-0012, was based upon three weakly detect
Externí odkaz:
http://arxiv.org/abs/2111.08103
Autor:
Jackson, Neal, Badole, Shruti, Morgan, John, Chhetri, Rajan, Prusis, Kaspars, Nikolajevs, Atvars, Morabito, Leah, Brentjens, Michiel, Sweijen, Frits, Iacobelli, Marco, Orrù, Emanuela, Sluman, J., Blaauw, R., Mulder, H., van Dijk, P., Mooney, Sean, Deller, Adam, Moldon, Javier, Callingham, J. R., Harwood, Jeremy, Hardcastle, Martin, Heald, George, Drabent, Alexander, McKean, J. P., Asgekar, A., Avruch, I. M., Bentum, M. J., Bonafede, A., Brouw, W. N., Brüggen, M., Butcher, H. R., Ciardi, B., Coolen, A., Corstanje, A., Damstra, S., Duscha, S., Eislöffel, J., Falcke, H., Garrett, M., de Gasperin, F., Griessmeier, J. -M., Gunst, A. W., van Haarlem, M. P., Hoeft, M., van der Horst, A. J., Jütte, E., Koopmans, L. V. E., Krankowski, A., Maat, P., Mann, G., Miley, G. K., Nelles, A., Norden, M., Paas, M., Pandey, V. N., Pandey-Pommier, M., Pizzo, R. F., Reich, W., Rothkaehl, H., Rowlinson, A., Ruiter, M., Shulevski, A., Schwarz, D. J., Smirnov, O., Tagger, M., Vocks, C., van Weeren, R. J., Wijers, R., Wucknitz, O., Zarka, P., Zensus, J. A., Zucca, P.
Publikováno v:
A&A 658, A2 (2022)
The Low-Frequency Array (LOFAR) Long-Baseline Calibrator Survey (LBCS) was conducted between 2014 and 2019 in order to obtain a set of suitable calibrators for the LOFAR array. In this paper we present the complete survey, building on the preliminary
Externí odkaz:
http://arxiv.org/abs/2108.07284
Autor:
White, Sarah V., Franzen, Thomas M. O., Riseley, Chris J., Wong, O. Ivy, Kapińska, Anna D., Hurley-Walker, Natasha, Callingham, Joseph R., Thorat, Kshitij, Wu, Chen, Hancock, Paul, Hunstead, Richard W., Seymour, Nick, Swan, Jesse, Wayth, Randall, Morgan, John, Chhetri, Rajan, Jackson, Carole, Weston, Stuart, Bell, Martin, For, Bi-Qing, Gaensler, B. M., Johnston-Hollitt, Melanie, Offringa, André, Staveley-Smith, Lister
Publikováno v:
Publ. Astron. Soc. Aust. 37 (2020) e018
The Murchison Widefield Array (MWA) has observed the entire southern sky (Declination, $\delta <$ 30 deg) at low radio-frequencies, over the range 72-231 MHz. These observations constitute the GaLactic and Extragalactic All-sky MWA (GLEAM) Survey, an
Externí odkaz:
http://arxiv.org/abs/2004.13125
Autor:
White, Sarah V., Franzen, Thomas M. O., Riseley, Chris J., Wong, O. Ivy, Kapińska, Anna D., Hurley-Walker, Natasha, Callingham, Joseph R., Thorat, Kshitij, Wu, Chen, Hancock, Paul, Hunstead, Richard W., Seymour, Nick, Swan, Jesse, Wayth, Randall, Morgan, John, Chhetri, Rajan, Jackson, Carole, Weston, Stuart, Bell, Martin, Gaensler, B. M., Johnston-Hollitt, Melanie, Offringa, André, Staveley-Smith, Lister
The entire southern sky (Declination, $\delta <$ 30 deg) has been observed using the Murchison Widefield Array (MWA), which provides radio imaging of $\sim$2-arcmin resolution at low frequencies (72-231 MHz). This is the GaLactic and Extragalactic Al
Externí odkaz:
http://arxiv.org/abs/2004.13025
Autor:
Chhetri, Rajan, Morgan, John, Moss, Vanessa, Ekers, Ron, Scott, Danica, Bannister, Keith, Day, Cherie K., Deller, Adam T., Shannon, Ryan M.
Publikováno v:
In Advances in Space Research 15 December 2023 72(12):5361-5370
Autor:
Sadler, Elaine M., Chhetri, Rajan, Morgan, John, Mahony, Elizabeth K., Jarrett, Thomas H., Tingay, Steven
Around 10% of bright low-frequency radio sources observed with the Murchison Widefield Array (MWA) show strong Interplanetary Scintillation (IPS) on timescales of a few seconds, implying that almost all their low-frequency radio emission comes from a
Externí odkaz:
http://arxiv.org/abs/1810.13142
Autor:
White, Sarah V., Franzen, Thomas M. O., Wong, O. Ivy, Kapinska, Anna D., Riseley, Chris, Hancock, Paul, Callingham, Joseph, Hunstead, Richard, Hurley-Walker, Natasha, Wu, Chen, Seymour, Nick, Swan, Jesse, Wayth, Randall, Morgan, John S., Chhetri, Rajan, Jackson, Carole, Weston, Stuart, Mauch, Tom
Powerful radio-galaxies feature heavily in our understanding of galaxy evolution. However, when it comes to studying their properties as a function of redshift and/or environment, the most-detailed studies tend to be limited by small-number statistic
Externí odkaz:
http://arxiv.org/abs/1810.01226