Zobrazeno 1 - 10
of 615
pro vyhledávání: '"Sridhar, S. S."'
Autor:
Carli, E., Levin, L., Stappers, B. W., Barr, E. D., Breton, R. P., Buchner, S., Burgay, M., Kramer, M., Padmanabh, P. V., Possenti, A., Krishnan, V. Venkatraman, Sridhar, S. S., Turner, J. D.
The Small and Large Magellanic Clouds are the only galaxies outside our own in which radio pulsars have been discovered to date. The sensitivity of the MeerKAT radio interferometer offers an opportunity to search for a population of more distant extr
Externí odkaz:
http://arxiv.org/abs/2410.04658
Autor:
Ranchod, S., Mao, S. A., Deane, R., Sridhar, S. S., Damas-Segovia, A., Livingston, J. D., Ma, Y. K.
Publikováno v:
A&A 686, A104 (2024)
The S-band Polarisation All Sky Survey (SPASS/ATCA) rotation measure (RM) catalogue is the largest broadband RM catalogue to date, increasing the RM density in the sparse southern sky. Through analysis of this catalogue, we report a latitude dependen
Externí odkaz:
http://arxiv.org/abs/2403.13500
Autor:
Padmanabh, P. V., Barr, E. D., Sridhar, S. S., Rugel, M. R., Damas-Segovia, A., Jacob, A. M., Balakrishnan, V., Berezina, M., Bernadich, M. C. i, Brunthaler, A., Champion, D. J., Freire, P. C. C., Khan, S., Klöckner, H. -R., Kramer, M., Ma, Y. K., Mao, S. A., Men, Y. P., Menten, K. M., Sengupta, S., Krishnan, V. Venkatraman, Wucknitz, O., Wyrowski, F., Bezuidenhout, M. C., Buchner, S., Burgay, M., Chen, W., Clark, C. J., Künkel, L., Nieder, L., Stappers, B., Legodi, L. S., Nyamai, M. M.
Galactic plane radio surveys play a key role in improving our understanding of a wide range of astrophysical phenomena. Performing such a survey using the latest interferometric telescopes produces large data rates necessitating a shift towards fully
Externí odkaz:
http://arxiv.org/abs/2303.09231
Autor:
Heald, G. H., Heesen, V., Sridhar, S. S., Beck, R., Bomans, D. J., Brüggen, M., Chyży, K. T., Damas-Segovia, A., Dettmar, R. -J., English, J., Henriksen, R., Ideguchi, S., Irwin, J., Krause, M., Li, J. -T., Murphy, E. J., Nikiel-Wroczyński, B., Piotrowska, J., Rand, R. J., Shimwell, T., Stein, Y., Vargas, C. J., Wang, Q. D., van Weeren, R. J., Wiegert, T.
We present new radio continuum images of the edge-on starburst galaxy NGC 5775, from LOFAR (140 MHz) and the Karl G. Jansky Very Large Array CHANG-ES survey (1500 MHz). We trace the non-thermal radio halo up to 13 kpc from the disc, measuring the non
Externí odkaz:
http://arxiv.org/abs/2109.12267
Autor:
Rozko, K., Kijak, J., Chyzy, K., Lewandowski, W., Shimwell, T., Sridhar, S. S., Curylo, M., Krankowski, A., Blaszkiewicz, L.
Publikováno v:
The Astrophysical Journal, 2020, Volume 903, Issue 2, id.144, 6 pp
In this paper we present recent Low Frequency Array (LOFAR) observations of the pulsar J1740+1000. We confirm that its spectrum has a turnover at 260 MHz, which is unusual for a typical pulsar. We argue that in this case interferometric imaging provi
Externí odkaz:
http://arxiv.org/abs/2104.00397
Autor:
Cantwell, T. M., Bray, J. D., Croston, J. H., Scaife, A. M. M., Mulcahy, D. D., Best, P. N., Bruggen, M., Brunetti, G., Callingham, J. R., Clarke, A. O., Hardcastle, M. J., Harwood, J. J., Heald, G., Heesen, V., Iacobelli, M., Jamrozy, M., Morganti, R., Orru, E., O'Sullivan, S. P., Riseley, C. J., Rottgering, H. J. A., Shulevski, A., Sridhar, S. S., Tasse, C., Van Eck, C. L.
We present LOFAR observations at 150 MHz of the borderline FRI/FRII giant radio galaxy NGC 6251. This paper presents the most sensitive and highest-resolution images of NGC 6251 at these frequencies to date, revealing for the first time a low-surface
Externí odkaz:
http://arxiv.org/abs/2004.11104
Autor:
Heesen, V., Whitler, L., Schmidt, P., Miskolczi, A., Sridhar, S. S., Horellou, C., Beck, R., Gürkan, G., Scannapieco, E., Brüggen, M., Heald, G. H., Krause, M., Paladino, R., Nikiel-Wroczyński, B., Dettmar, R. -J.
Publikováno v:
A&A 628, L3 (2019)
Cosmic rays play a pivotal role in launching galactic winds, particularly in quiescently star-forming galaxies where the hot gas alone is not sufficient to drive a wind. Except for the Milky Way, not much is known about the transport of cosmic rays i
Externí odkaz:
http://arxiv.org/abs/1907.07076
Autor:
Shimwell, T. W., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L., Best, P. N., Röttgering, H. J. A., Callingham, J. R., Dijkema, T. J., de Gasperin, F., Hoang, D. N., Hugo, B., Mirmont, M., Oonk, J. B. R., Prandoni, I., Rafferty, D., Sabater, J., Smirnov, O., van Weeren, R. J., White, G. J., Atemkeng, M., Bester, L., Bonnassieux, E., Brüggen, M., Brunetti, G., Chyży, K. T., Cochrane, R., Conway, J. E., Croston, J. H., Danezi, A., Duncan, K., Haverkorn, M., Heald, G. H., Iacobelli, M., Intema, H. T., Jackson, N., Jamrozy, M., Jarvis, M. J., Lakhoo, R., Mevius, M., Miley, G. K., Morabito, L., Morganti, R., Nisbet, D., Orrú, E., Perkins, S., Pizzo, R. F., Schrijvers, C., Smith, D. J. B., Vermeulen, R., Wise, M. W., Alegre, L., Bacon, D. J., van Bemmel, I. M., Beswick, R. J., Bonafede, A., Botteon, A., Bourke, S., Brienza, M., Rivera, G. Calistro, Cassano, R., Clarke, A. O., Conselice, C. J., Dettmar, R. J., Drabent, A., Dumba, C., Emig, K. L., Enßlin, T. A., Ferrari, C., Garrett, M. A., Génova-Santos, R. T., Goyal, A., Gürkan, G., Hale, C., Harwood, J. J., Heesen, V., Hoeft, M., Horellou, C., Jackson, C., Kokotanekov, G., Kondapally, R., Kunert-Bajraszewska, M., Mahatma, V., Mahony, E. K., Mandal, S., McKean, J. P., Merloni, A., Mingo, B., Miskolczi, A., Mooney, S., Nikiel-Wroczyński, B., O'Sullivan, S. P., Quinn, J., Reich, W., Roskowiński, C., Rowlinson, A., Savini, F., Saxena, A., Schwarz, D. J., Shulevski, A., Sridhar, S. S., Stacey, H. R., Urquhart, S., van der Wiel, M. H. D., Varenius, E., Webster, B., Wilber, A.
The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing sensitive, high-resolution 120-168MHz survey of the entire northern sky for which observations are now 20% complete. We present our first full-quality public data release. For this data release 424
Externí odkaz:
http://arxiv.org/abs/1811.07926
Rotation measure (RM) synthesis is a widely used polarization processing algorithm for reconstructing polarized structures along the line of sight. Performing RM synthesis on large datasets produced by telescopes like LOFAR can be computationally int
Externí odkaz:
http://arxiv.org/abs/1810.06250
Autor:
Riseley, C. J., Lenc, E., Van Eck, C. L., Heald, G., Gaensler, B. M., Anderson, C. S., Hancock, P. J., Hurley-Walker, N., Sridhar, S. S., White, S. V.
The low-frequency polarisation properties of radio sources are poorly studied, particularly in statistical samples. However, the new generation of low-frequency telescopes, such as the Murchison Widefield Array (MWA; the precursor for the low-frequen
Externí odkaz:
http://arxiv.org/abs/1809.09327