Zobrazeno 1 - 10
of 401
pro vyhledávání: '"McHardy I. M."'
Autor:
Dullo, B. T., Knapen, J. H., Baldi, R. D., Williams, D. R. A., Beswick, R. J., McHardy, I. M., Green, D. A., de Paz, A. Gil, Aalto, S., Alberdi, A., Argo, M. K., Gallagher, J. S., Klöckner, H. -R., Marcaide, J. M., Mutie, I. M., Saikia, D. J., Saikia, P., Stevens, I. R., Torrejón, S.
[Abridged] The relation between nuclear star clusters (NSCs) and the growth of the central SMBHs, as well as their connection to the properties of the host galaxies, is crucial for understanding the evolution of galaxies. Recent observations have rev
Externí odkaz:
http://arxiv.org/abs/2407.10850
Autor:
Dullo, B. T., Knapen, J. H., Beswick, R. J., Baldi, R. D., Williams, D. R. A., McHardy, I. M., Green, D. A., de Paz, A. Gil, Aalto, S., Alberdi, A., Argo, M. K., Klöckner, H. -R., Mutie, I. M., Saikia, D. J., Saikia, P., Stevens, I. R.
Multiwavelength studies indicate that nuclear activity and bulge properties are closely related, but the details remain unclear. To study this further, we combine $Hubble~Space~Telescope$ bulge structural and photometric properties with 1.5 GHz, $e$-
Externí odkaz:
http://arxiv.org/abs/2304.06642
Autor:
Dullo, B. T., Knapen, J. H., Beswick, R. J., Baldi, R. D., Williams, D. R. A., McHardy, I. M., Gallagher, J. S., Aalto, S., Argo, M. K., de Paz, A. Gil, Klöckner, H. -R., Marcaide, J. M., Mundell, C. G., Mutie, I. M., Saikia, P.
Publikováno v:
A&A 675, A105 (2023)
[Abridged] We use high-resolution $HST$ imaging and $e$-MERLIN 1.5-GHz observations of galaxy cores from the LeMMINGs survey to investigate the relation between optical structural properties and nuclear radio emission for a large sample of galaxies.
Externí odkaz:
http://arxiv.org/abs/2303.11154
Autor:
Kumari, Kavita, Dewangan, G. C., Papadakis, I. E., Beard, Max W. J., McHardy, I. M., Singh, K. P., Bhattacharya, D., Bhattacharyya, S., Chandra, S.
We study accretion disk-corona connection in Seyfert 1 galaxies using simultaneous UV/X-ray observations of NGC 4593 (July 14-18, 2016) and NGC 7469 (October 15-19, 2017) performed with AstroSat. We use the X-ray (0.5-7.0 keV) data acquired with the
Externí odkaz:
http://arxiv.org/abs/2303.01556
Autor:
McHardy, I. M., Beard, M., Breedt, E., Knapen, J. H., Vincentelli, F. M., Veresvarska, M., Dhillon, V. S., Marsh, T. R., Littlefair, S. P., Horne, K., Glew, R., Goad, M. R., Kammoun, E., Emmanoulopoulos, D.
We present fast (~200s sampling) ugriz photometry of the low mass AGN NGC 4395 with the Liverpool Telescope, followed by very fast (3s sampling) us, gs, rs, is and zs simultaneous monitoring with HiPERCAM on the 10.4m GTC. These observations provide
Externí odkaz:
http://arxiv.org/abs/2212.08015
Autor:
Williams, D. R. A., Pahari, M., Baldi, R. D., McHardy, I. M., Mathur, S., Beswick, R. J., Beri, A., Boorman, P., Aalto, S., Alberdi, A., Argo, M. K., Dullo, B. T., Fenech, D. M., Green, D. A., Knapen, J. H., Martí-Vidal, I., Moldon, J., Mundell, C. G., Muxlow, T. W. B., Panessa, F., Pérez-Torres, M., Saikia, P., Shankar, F., Stevens, I. R., Uttley, P.
All 280 of the statistically-complete Palomar sample of nearby (<120 Mpc) galaxies dec > 20 degrees have been observed at 1.5 GHz as part of the LeMMINGs e-MERLIN legacy survey. Here, we present Chandra X-ray observations of the nuclei of 213 of thes
Externí odkaz:
http://arxiv.org/abs/2111.09077
Autor:
Kiehlmann S., Savolainen T., Jorstad S. G., Sokolovsky K. V., Schinzel F. K., Agudo I., Arkharov A. A., Benítez E., Berdyugin A., Blinov D. A., Bochkarev N. G., Borman G. A., Burenkov A. N., Casadio C., Doroshenko V. T., Efimova N. V., Fukazawa Y., Gómez J. L., Hagen-Thorn V. A., Heidt J., Hiriart D., Itoh R., Joshi M., Kimeridze G. N., Konstantinova T. S., Kopatskaya E. N., Korobtsev I. V., Kovalev Y. Y., Krajci T., Kurtanidze O., Kurtanidze S. O., Larionov V. M., Larionova E. G., Larionova L. V., Lindfors E., López E., Marscher A. P., McHardy I. M., Molina S. N., Morozova D. A., Nazarov S.V., Nikolashvili M. G., Nilsson K., Pulatova N. G., Reinthal R., Sadun A., Sergeev S. G., Sigua L. A., Sorcia M., Spiridonova O. I., Takalo L. O., Taylor B., Troitsky I. S., Ugolkova L. S., Zensus J. A., Zhdanova V. E.
Publikováno v:
EPJ Web of Conferences, Vol 61, p 06003 (2013)
Quasar 3C 279 is known to exhibit episodes of optical polarization angle rotation. We present new, well-sampled optical polarization data for 3C 279 and introduce a method to distinguish between random and deterministic electric vector position angle
Externí odkaz:
https://doaj.org/article/345188c4006441269f48b6ea758aebf6
Autor:
Baldi, R. D., Williams, D. R. A., McHardy, I. M., Beswick, R. J., Brinks, E., Dullo, B. T., Knapen, J. H., Argo, M. K., Aalto, S., Alberdi, A., Baan, W. A., Bendo, G. J., Corbel, S., Fenech, D. M., Gallagher, J. S., Green, D. A., Kennicutt, R. C., Klöckner, H. -R., Körding, E., Maccarone, T. J., Muxlow, T. W. B., Mundell, C. G., Panessa, F., Peck, A. B., Pérez-Torres, M. A., Romero-Cañizales, C., Saikia, P., Shankar, F., Spencer, R. E., Stevens, I. R., Varenius, E., Ward, M. J., Yates, J.
We present the second data release of high-resolution ($\leq0.2$ arcsec) 1.5-GHz radio images of 177 nearby galaxies from the Palomar sample, observed with the e-MERLIN array, as part of the LeMMINGs (Legacy e-MERLIN Multi-band Imaging of Nearby Gala
Externí odkaz:
http://arxiv.org/abs/2011.03062
Autor:
Dehghanian, M., Ferland, G. J., Kriss, G. A., Peterson, B. M., Korista, K. T., Goad, M. R., Chatzikos, M., Guzman, F., de Rosa, G., Mehdipour, M., Kaastra, J., Mathur, S., Vestergaard, M., Proga, D., Waters, T., Bentz, M. C., Bisogni, S., Brandt, W. N., Bont`a, E. Dalla, Fausnaugh, M. M., Gelbord, J. M., Horne, Keith, McHardy, I. M., Pogge, R. W., Starkey, D. A.
In 2014 the NGC 5548 Space Telescope and Optical Reverberation Mapping campaign discovered a two-month anomaly when variations in the absorption and emission lines decorrelated from continuum variations. During this time the soft X-ray part of the in
Externí odkaz:
http://arxiv.org/abs/2006.06615
Autor:
Muxlow, T. W. B., Thomson, A. P., Radcliffe, J. F., Wrigley, N. H., Beswick, R. J., Smail, Ian, McHardy, I. M., Garrington, S. T., Ivison, R. J., Jarvis, M. J., Prandoni, I., Bondi, M., Guidetti, D., Argo, M. K., Bacon, David, Best, P. N., Biggs, A. D., Chapman, S. C., Coppin, K., Chen, H., Garratt, T. K., Garrett, M. A., Ibar, E., Kneib, Jean-Paul, Knudsen, Kirsten K., Koopmans, L. V. E., Morabito, L. K., Murphy, E. J., Njeri, A., Pearson, Chris, Perez-Torres, M. A., Richards, A. M. S., Rottgering, H. J. A., Sargent, M. T., Serjeant, Stephen, Simpson, C., Simpson, J. M., Swinbank, A. M., Varenius, E., Venturi, T.
We present an overview and description of the eMERLIN Galaxy Evolution survey (eMERGE) Data Release 1 (DR1), a large program of high-resolution 1.5 GHz radio observations of the GOODS-N field comprising $\sim140$ hours of observations with eMERLIN an
Externí odkaz:
http://arxiv.org/abs/2005.02407