Zobrazeno 1 - 10
of 230
pro vyhledávání: '"McCauley, P. I."'
We have shown previously that the Murchison Widefield Array (MWA), can detect hundreds of Interplanetary Scintillation (IPS) sources simultaneously across a field of view $\sim30^\circ$ in extent. To test if we can use this capability to track helios
Externí odkaz:
http://arxiv.org/abs/2303.09134
Autor:
McCauley, Patrick I.
Low-frequency (80-240 MHz) radio observations of the solar corona are presented using the Murchison Widefield Array (MWA), and several discoveries are reported. The corona is reviewed, followed by chapters on Type III bursts and circularly-polarized
Externí odkaz:
http://arxiv.org/abs/1912.01747
Autor:
Beardsley, A. P., Johnston-Hollitt, M., Trott, C. M., Pober, J. C., Morgan, J., Oberoi, D., Kaplan, D. L., Lynch, C. R., Anderson, G. E., McCauley, P. I., Croft, S., James, C. W., Wong, O. I., Tremblay, C. D., Norris, R. P., Cairns, I. H., Lonsdale, C. J., Hancock, P. J., Gaensler, B. M., Bhat, N. D. R., Li, W., Hurley-Walker, N., Callingham, J. R., Seymour, N., Yoshiura, S., Joseph, R. C., Takahashi, K., Sokolowski, M., Miller-Jones, J. C. A., Chauhan, J. V., Bojičić, I., Filipović, M. D., Leahy, D., Su, H., Tian, W. W., McSweeney, S. J., Meyers, B. W., Kitaeff, S., Vernstrom, T., Gürkan, G., Heald, G., Xue, M., Riseley, C. J., Duchesne, S. W., Bowman, J. D., Jacobs, D. C., Crosse, B., Emrich, D., Franzen, T. M. O., Horsley, L., Kenney, D., Morales, M. F., Pallot, D., Steele, K., Tingay, S. J., Walker, M., Wayth, R. B., Williams, A., Wu, C.
The Murchison Widefield Array (MWA) is an open access telescope dedicated to studying the low frequency (80$-$300 MHz) southern sky. Since beginning operations in mid 2013, the MWA has opened a new observational window in the southern hemisphere enab
Externí odkaz:
http://arxiv.org/abs/1910.02895
Autor:
McCauley, Patrick I., Cairns, Iver H., White, Stephen M., Mondal, Surajit, Lenc, Emil, Morgan, John, Oberoi, Divya
We present spectropolarimetric imaging observations of the solar corona at low frequencies (80 - 240 MHz) using the Murchison Widefield Array (MWA). These images are the first of their kind, and we introduce an algorithm to mitigate an instrumental a
Externí odkaz:
http://arxiv.org/abs/1907.10878
Weak heating events are frequent and ubiquitous in solar corona. They derive their energy from the local magnetic field and form a major source of local heating, signatures of which are seen in EUV and X-ray bands. Their radio emission arise from var
Externí odkaz:
http://arxiv.org/abs/1902.10426
Rapid and stepwise changes of the magnetic field are often observed during flares but cannot be explained by models yet. Using a 45 min sequence of SDO/HMI 135 s fast-cadence vector magnetograms of the X1 flare on 2014-03-29 we construct, at each tim
Externí odkaz:
http://arxiv.org/abs/1808.07079
We present coronal density profiles derived from low-frequency (80-240 MHz) imaging of three type III solar radio bursts observed at the limb by the Murchison Widefield Array (MWA). Each event is associated with a white light streamer at larger heigh
Externí odkaz:
http://arxiv.org/abs/1808.04989
Autor:
McCauley, Patrick I., Cairns, Iver H., Morgan, John, Gibson, Sarah E., Harding, James C., Lonsdale, Colin, Oberoi, Divya
We present low-frequency (80-240 MHz) radio imaging of type III solar radio bursts observed by the Murchison Widefield Array (MWA) on 2015/09/21. The source region for each burst splits from one dominant component at higher frequencies into two incre
Externí odkaz:
http://arxiv.org/abs/1711.04930
Autor:
Lenc, Emil, Anderson, C. S., Barry, N., Bowman, J. D., Cairns, I. H., Farnes, J. S., Gaensler, B. M., Heald, G., Johnston-Hollitt, M., Kaplan, D. L., Lynch, C. R., McCauley, P. I., Mitchell, D. A., Morgan, J., Morales, M. F., Murphy, T., Offringa, A. R., Ord, S. M., Pindor, B., Riseley, C., Sadler, E. M., Sobey, C., Sokolowski, M., Sullivan, I. S., O'Sullivan, S. P., Sun, X. H., Tremblay, S. E., Trott, C. M., Wayth, R. B.
We present techniques developed to calibrate and correct Murchison Widefield Array (MWA) low frequency (72-300 MHz) radio observations for polarimetry. The extremely wide field-of-view, excellent instantaneous (u, v)-coverage and sensitivity to degre
Externí odkaz:
http://arxiv.org/abs/1708.05799
We examine a small prominence eruption that occurred on 2014 May 1 at 01:35 UT and was observed by the Interface Region Imaging Spectrometer (IRIS) and the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO). Pre- and post-erup
Externí odkaz:
http://arxiv.org/abs/1505.07307