Zobrazeno 1 - 10
of 450
pro vyhledávání: '"Intema, H."'
Autor:
Shulevski, A., Brienza, M., Massaro, F., Morganti, R., Intema, H., Oosterloo, T., De Gasperin, F., Rajpurohit, K., Pasini, T., Kutkin, A., Vohl, D., Adams, E. A. K., Adebahr, B., Brüggen, M., Hess, K. M., Loose, M. G., Oostrum, L. C., Ziemke, J.
We present the discovery of a very extended (550 kpc) and low-surface-brightness ($ 3.3 \mu \mathrm{Jy} \, arcsec^{-2} $ at 144 MHz) radio emission region in Abell 1318. These properties are consistent with its characterisation as an active galactic
Externí odkaz:
http://arxiv.org/abs/2312.05713
Autor:
Gloudemans, A. J., Saxena, A., Intema, H., Callingham, J. R., Duncan, K. J., Rottgering, H. J. A., Belladitta, S., Hardcastle, M. J., Harikane, Y., Spingola, C.
Publikováno v:
A&A 678, A128 (2023)
We present the low-frequency radio spectra of 9 high-redshift quasars at $5.6 \leq z \leq 6.6$ using the Giant Metre Radio Telescope band-3, -4, and -5 observations ($\sim$300-1200 MHz), archival Low Frequency Array (LOFAR; 144 MHz), and Very Large A
Externí odkaz:
http://arxiv.org/abs/2309.03936
Autor:
Zhang, X., Simionescu, A., Stuardi, C., van Weeren, R. J., Intema, H. T., Akamatsu, H., de Plaa, J., Kaastra, J. S., Bonafede, A., Brüggen, M., ZuHone, J., Ichinohe, Y.
Publikováno v:
A&A 656, A59 (2021)
Knowledge of X-ray shock and radio relic connection in merging galaxy clusters has been greatly extended in terms of both observation and theory over the last decade. ZwCl 2341+0000 is a double-relic merging galaxy cluster; previous studies have show
Externí odkaz:
http://arxiv.org/abs/2110.02094
We present a collection of double-lobed sources towards a 20 sq deg area of the Cygnus region at the northern sky, observed at 325 and 610~MHz with the Giant Metrewave Radio Telescope. The 10'' resolution achieved at 325 MHz is 5.5 times better than
Externí odkaz:
http://arxiv.org/abs/2108.01505
Autor:
Mooley, K. P., Margalit, B., Law, C. J., Perley, D. A., Deller, A. T., Lazio, T. J. W., Bietenholz, M. F., Shimwell, T., Intema, H. T., Gaensler, B. M., Metzger, B. D., Dong, D. Z., Hallinan, G., Ofek, E. O., Sironi, L.
We present new radio and optical data, including very long baseline interferometry, as well as archival data analysis, for the luminous decades-long radio transient FIRST J141918.9+394036. The radio data reveal a synchrotron self-absorption peak arou
Externí odkaz:
http://arxiv.org/abs/2107.04703
Autor:
Hoang, D. N., Zhang, X., Stuardi, C., Shimwell, T. W., Bonafede, A., Brüggen, M., Brunetti, G., Botteon, A., Cassano, R., de Gasperin, F., Di Gennaro, G., Hoeft, M., Intema, H., Rajpurohit, K., Röttgering, H. J. A., Simionescu, A., van Weeren, R. J.
Publikováno v:
A&A 656, A154 (2021)
Mega-parsec scale radio sources in the form of halos and relics are often detected in dynamically disturbed galaxy clusters. Although they are associated with merger-induced turbulence and shocks, respectively, their formation is not fully understood
Externí odkaz:
http://arxiv.org/abs/2106.00679
Autor:
McKean, J. P., Godfrey, L. E. H., Vegetti, S., Wise, M. W., Morganti, R., Hardcastle, M. J., Rafferty, D., Anderson, J., Avruch, I. M., Beck, R., Bell, M. E., van Bemmel, I., Bentum, M. J., Bernardi, G., Best, P., Blaauw, R., Bonafede, A., Breitling, F., Broderick, J. W., Bruggen, M., Cerrigone, L., Ciardi, B., de Gasperin, F., Deller, A., Duscha, S., Engels, D., Falcke, H., Fallows, R. A., Frieswijk, W., Garrett, M. A., Griessmeier, J. M., van Haarlem, M. P., Heald, G., Hoeft, M., van der Horst, A. J., Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kondratiev, V. I., Koopmans, L. V. E., Kuniyoshi, M., Kuper, G., van Leeuwen, J., Maat, P., Mann, G., Markoff, S., McFadden, R., McKay-Bukowski, D., Mulcahy, D. D., Munk, H., Nelles, A., Orru, E., Paas, H., Pandey-Pommier, M., Pietka, M., Pizzo, R., Polatidis, A. G., Reich, W., Rottgering, H. J. A., Rowlinson, A., Scaife, A. M. M., Serylak, M., Shulevski, A., Sluman, J., Smirnov, O., Steinmetz, M., Stewart, A., Swinbank, J., Tagger, M., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., van Weeren, R. J., Wucknitz, O., Yatawatta, S., Zarka, P.
Publikováno v:
MNRAS, 463, 3143 (2016)
The low-frequency radio spectra of the hotspots within powerful radio galaxies can provide valuable information about the physical processes operating at the site of the jet termination. These processes are responsible for the dissipation of jet kine
Externí odkaz:
http://arxiv.org/abs/2103.16961
Autor:
de Gasperin, F., Williams, W. L., Best, P., Bruggen, M., Brunetti, G., Cuciti, V., Dijkema, T. J., Hardcastle, M. J., Norden, M. J., Offringa, A., Shimwell, T., van Weeren, R., Bomans, D., Bonafede, A., Botteon, A., Callingham, J. R., Cassano, R., Chyzy, K. T., Emig, K. L., Edler, H., Haverkorn, M., Heald, G., Heesen, V., Iacobelli, M., Intema, H. T., Kadler, M., Malek, K., Mevius, M., Miley, G., Mingo, B., Morabito, L. K., Sabater, J., Morganti, R., Orru, E., Pizzo, R., Prandoni, I., Shulevski, A., Tasse, C., Vaccari, M., Zarka, P., Rottgering, H.
LOFAR is the only radio telescope that is presently capable of high-sensitivity, high-resolution (<1 mJy/b and <15") observations at ultra-low frequencies (<100 MHz). To utilise these capabilities, the LOFAR Surveys Key Science Project is undertaking
Externí odkaz:
http://arxiv.org/abs/2102.09238
Autor:
Ghirardini, V., Bulbul, E., Hoang, D. N., Klein, M., Okabe, N., Biffi, V., Bruggen, M., Ramos-Ceja, M. E., Comparat, J., Oguri, M., Shimwell, T. W., Basu, K., Bonafede, A., Botteon, A., Brunetti, G., Cassano, R., de Gasperin, F., Dennerl, K., Gatuzz, E., Gastaldello, F., Intema, H., Merloni, A., Nandra, K., Pacaud, F., Predehl, P., Reiprich, T. H., Robrade, J., Röttgering, H., van Weeren, J. Sanders R. J., Williams, W. L.
Publikováno v:
A&A 647, A4 (2021)
We examine the X-ray, optical, and radio properties for the members clusters of a new supercluster discovered during the SRG/eROSITA Performance Verification phase. In the 140 deg2 eROSITA Final Equatorial Depth Survey (eFEDS) field we detect a previ
Externí odkaz:
http://arxiv.org/abs/2012.11607
Autor:
Mandal, S., Prandoni, I., Hardcastle, M. J., Shimwell, T. W., Intema, H. T., Tasse, C., van Weeren, R. J., Algera, H., Emig, K. L., Röttgering, H. J. A., Schwarz, D. J., Siewert, T. M., Best, P. N., Bonato, M., Bondi, M., Jarvis, M. J., Kondapally, R., Leslie, S. K., Mahatma, V. H., Sabater, J., Retana-Montenegro, E., Williams, W. L.
Publikováno v:
A&A 648, A5 (2021)
With the advent of new generation low-frequency telescopes, such as the LOw Frequency ARray (LOFAR), and improved calibration techniques, we have now started to unveil the sub GHz radio sky with unprecedented depth and sensitivity. The LOFAR Two Mete
Externí odkaz:
http://arxiv.org/abs/2011.08829