Browsing by Author "Conway, J. E."

Now showing 1 - 3 of 3
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    Atomic hydrogen bridge fueling NGC 4418 with gas from VV 655
    (2017) Varenius, E.; Costagliola, F.; Kloeckner, H. -R.; Aalto, S.; Spoon, H.; Marti-Vidal, I.; Conway, J. E.; Privon, G. C.; Konig, S.
    Context. The galaxy NGC4418 harbours a compact (< 20 pc) core with a very high bolometric luminosity (similar to 10(11) L-circle dot). As most of the galaxy energy output comes from this small region, it is of interest to determine what fuels this intense activity. An interaction with the nearby blue irregular galaxy VV655 has been proposed, where gas acquired by NGC4418 could trigger intense star formation and / or black hole accretion in the centre.
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    The nature of supernovae 2010O and 2010P in Arp 299-II. Radio emission
    (OXFORD UNIV PRESS, 2014) Romero Canizales, C.; Herrero Illana, R.; Perez Torres, M. A.; Alberdi, A.; Kankare, E.; Bauer, F. E.; Ryder, S. D.; Mattila, S.; Conway, J. E.; Beswick, R. J.; Muxlow, T. W. B.
    We report radio observations of two stripped-envelope supernovae (SNe), 2010O and 2010P, which exploded within a few days of each other in the luminous infrared galaxy Arp 299. Whilst SN 2010O remains undetected at radio frequencies, SN 2010P was detected (with an astrometric accuracy better than 1 milli arcsec in position) in its optically thin phase in epochs ranging from similar to 1 to similar to 3 yr after its explosion date, indicating a very slow radio evolution and a strong interaction of the SN ejecta with the circumstellar medium. Our late-time radio observations towards SN 2010P probe the dense circumstellar envelope of this SN, and imply M [M-circle dot yr(-1)]/upsilon(wind) [10 km s(-1)] = (3.0 - 5.1) x 10(-5), with a 5 GHz peak luminosity of similar to 1.2 x 10(27) erg s(- 1) Hz(- 1) on day similar to 464 after explosion. This is consistent with a Type IIb classification for SN 2010P, making it the most distant and most slowly evolving Type IIb radio SN detected to date.
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    Unveiling the AGN in IC 883: discovery of a parsec-scale radio jet
    (2017) Romero Cañizales, Cristina; Alberdi, A.; Ricci, Claudio; Arévalo, P.; Pérez Torres, M. A.; Conway, J. E.; Beswick, R. J.; Bondi, M.; Muxlow, T. W. B.; Bauer, Franz Erik