Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Sikhosana, S P"'
Autor:
Wagenveld, J. D., Klöckner, H-R., Gupta, N., Sekhar, S., Jagannathan, P., Deka, P. P., Jose, J., Balashev, S. A., Borgaonkar, D., Chatterjee, A., Combes, F., Emig, K. L., Gaunekar, A. N., Hilton, M., Józsa, G. I. G., Klutse, D. Y., Knowles, K., Krogager, J. -K., Momjian, E., Muller, S., Sikhosana, S. P.
We present the second data release of the MeerKAT Absorption Line Survey (MALS), consisting of wideband continuum catalogues of 391 pointings observed at L~band. The full wideband catalogue covers 4344 deg$^2$ of sky, reaches a depth of 10 $\mu$Jy be
Externí odkaz:
http://arxiv.org/abs/2408.16619
Autor:
Chatterjee, Swarna, Pillay, Denisha, Datta, Abhirup, Raja, Ramij, Knowles, Kenda, Rahaman, Majidul, Sikhosana, S. P.
Multiwavelength studies of galaxy clusters are crucial for understanding the complex interconnection of the thermal and non-thermal constituents of these massive structures and uncovering the physical processes involved in their formation and evoluti
Externí odkaz:
http://arxiv.org/abs/2408.09571
Autor:
Klutse, D. Y., Hilton, M., Heywood, I., Smail, I., Swinbank, A. M., Knowles, K., Sikhosana, S. P.
We present the first detailed radio study of the galaxy cluster XMMXCS J2215.9-1738 at $z$ = 1.46 using MeerKAT $L$-band (1.3 GHz) observations. We combine our radio observation with archival optical and infrared data to investigate the star formatio
Externí odkaz:
http://arxiv.org/abs/2407.03667
Autor:
Sikhosana, S. P., Hilton, M., Bernardi, G., Kesebonye, K., Klutse, D. Y., Knowles, K., Moodley, K., Mroczkowski, T., Partridge, B., Sifón, C., Vargas, C., Wollack, E.
In the current paradigm, high redshift radio halos are expected to be scarce due to inverse Compton energy losses and redshift dimming, which cause them to be intrinsically faint. This low occurrence fraction is predicted by cosmic ray electron turbu
Externí odkaz:
http://arxiv.org/abs/2404.03944
Autor:
Deka, P. P., Gupta, N., Jagannathan, P., Sekhar, S., Momjian, E., Bhatnagar, S., Wagenveld, J., Klöckner, H. -R., Jose, J., Balashev, S. A., Combes, F., Hilton, M., Borgaonkar, D., Chatterjee, A., Emig, K. L., Gaunekar, A. N., Józsa, G. I. G., Klutse, D. Y., Knowles, K., Krogager, J-. K., Mohapatra, A., Moodley, K., Muller, Sébastien, Noterdaeme, P., Petitjean, P., Salas, P., Sikhosana, S.
The MeerKAT Absorption Line Survey (MALS) has observed 391 telescope pointings at L-band (900 - 1670 MHz) at $\delta\lesssim$ $+20\deg$. We present radio continuum images and a catalog of 495,325 (240,321) radio sources detected at a signal-to-noise
Externí odkaz:
http://arxiv.org/abs/2308.12347
Autor:
Wagenveld, J. D., Klöckner, H. -R., Gupta, N., Deka, P. P., Jagannathan, P., Sekhar, S., Balashev, S. A., Boettcher, E., Combes, F., Emig, K. L., Hilton, M., Józsa, G. I. G., Kamphuis, P., Klutse, D. Y., Knowles, K., Krogager, J. -K., Mohapatra, A., Momjian, E., Moodley, K., Muller, S., Petitjean, P., Salas, P., Sikhosana, S., Srianand, R.
Publikováno v:
A&A 673, A113 (2023)
The number counts of homogeneous samples of radio sources are a tried and true method of probing the large scale structure of the Universe, as most radio sources outside the galactic plane are at cosmological distances. As such they are expected to t
Externí odkaz:
http://arxiv.org/abs/2302.10696
The Bullet cluster (1E 0657-55.8) is a massive merging system at redshift $z$=0.296, known to host a powerful radio halo and a relic. Here we present high fidelity MeerKAT L-band (0.9-1.7 GHz) observations of the Bullet cluster, in which we trace a l
Externí odkaz:
http://arxiv.org/abs/2207.05492
Autor:
Kale, R., Parekh, V., Rahaman, M., Joshi, D. C., Venturi, T., Kolokythas, K., Chibueze, J. O., Sikhosana, S., Pillay, D., Knowles, K.
We aim to carry out a radio study of the SoUthern Cluster sCale Extended Source Survey (SUCCESS) sample consisting of twenty massive (M$_{500} > 5\times10^{14}$ M$_{\odot}$), nearby (redshift $<0.3$) and southern ($-50^{\circ} < \delta < -30^\circ$)
Externí odkaz:
http://arxiv.org/abs/2206.10895
Autor:
Giacintucci, S., Venturi, T., Markevitch, M., Bourdin, H., Mazzotta, P., Merluzzi, P., Dallacasa, D., Bardelli, S., Sikhosana, S. P., Smirnov, O., Bernardi, G.
Using a MeerKAT observation of the galaxy cluster A3562 (a member of the Shapley Supercluster), we have discovered a narrow, long and straight, very faint radio filament, which branches out at a straight angle from the tail of a radio galaxy located
Externí odkaz:
http://arxiv.org/abs/2206.06176
Autor:
Venturi, T., Giacintucci, S., Merluzzi, P., Bardelli, S., Busarello, G., Dallacasa, D., Sikhosana, S. P., Marvil, J., Smirnov, O., Bourdin, H., Mazzotta, P., Rossetti, M., Rudnick, L., Bernardi, G., Bruggen, M., Carretti, E., Cassano, R., Di Gennaro, G., Gastaldello, F., Kale, R., Knowles, K., Koribalski, B. S., Heywood, I., Hopkins, A. M., Norris, R. P., Reiprich, T. H., Tasse, C., Vernstrom, T., Zucca, E., Bester, L. H., Diego, J. M., Kanapathippillai, J.
Publikováno v:
A&A 660, A81 (2022)
The Shapley Supercluster ($\langle z \rangle\approx0.048$) contains several tens of gravitationally bound clusters and groups, making it it is an ideal subject for radio studies of cluster mergers. We used new high sensitivity radio observations to i
Externí odkaz:
http://arxiv.org/abs/2201.04887