Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Gröningsson, P."'
Autor:
Larsson, J., Fransson, C., Östlin, G., Gröningsson, P., Jerkstrand, A., Kozma, C., Sollerman, J., Challis, P., Kirshner, R. P., Chevalier, R. A., Heng, K., McCray, R., Suntzeff, N. B., Bouchet, P., Crotts, A., Danziger, J., Dwek, E., France, K., Garnavich, P. M., Lawrence, S. S., Leibundgut, B., Lundqvist, P., Panagia, N., Pun, C. S. J., Smith, N., Sonneborn, G., Wang, L., Wheeler, J. C.
We present the late-time optical light curve of the ejecta of SN 1987A measured from HST imaging observations spanning the past 17 years. We find that the flux from the ejecta declined up to around year 2001, powered by the radioactive decay of 44Ti.
Externí odkaz:
http://arxiv.org/abs/1106.2300
Autor:
Mattila, Seppo, Lundqvist, Peter, Groeningsson, Per, Meikle, Peter, Stathakis, Raylee, Fransson, Claes, Cannon, Russell
We present optical spectroscopic data of the inner circumstellar ring around SN 1987A from the Anglo-Australian Telescope (AAT) and the Very Large Telescope (VLT) between ~1400 and ~5000 days post-explosion. We also assembled the available optical an
Externí odkaz:
http://arxiv.org/abs/1002.4195
Autor:
Groeningsson, Per, Fransson, Claes, Leibundgut, Bruno, Lundqvist, Peter, Challis, Peter, Chevalier, Roger A., Spyromilio, Jason
We present seven epochs between October 1999 and November 2007 of high resolution VLT/UVES echelle spectra of the ejecta-ring collision of SN 1987A. The fluxes of most of the narrow lines from the unshocked gas decreased by a factor of 2-3 during thi
Externí odkaz:
http://arxiv.org/abs/0810.2661
Autor:
Groeningsson, Per, Fransson, Claes, Lundqvist, Peter, Lundqvist, Natalia, Leibundgut, Bruno, Spyromilio, Jason, Chevalier, Roger A., Gilmozzi, Roberto, Kjaer, Karina, Mattila, Seppo, Sollerman, Jesper
We discuss high resolution VLT/UVES observations (FWHM ~ 6 km/s) from October 2002 (day ~5700 past explosion) of the shock interaction of SN 1987A and its circumstellar ring. A nebular analysis of the narrow lines from the unshocked gas indicates gas
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703788
Autor:
Kjaer, Karina, Leibundgut, Bruno, Fransson, Claes, Groeningsson, Per, Spyromilio, Jason, Kissler-Patig, Markus
Publikováno v:
AIPConf.Proc.937:76-80,2007
SN 1987A in the Large Magellanic Cloud is close enough for a study of the very late time evolution of a supernova and its transition to a supernova remnant. Nearly two decades after explosion we are witnessing the supernova shock wave engaging the in
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703720
Publikováno v:
AIPConf.Proc.924:366-372,2007
After nearly two decades at least five emission mechanisms can be found in SN 1987A. The ejecta continue to glow as a result of the radioactive decay of long-lived nuclei (mostly 44Ti), but is fading continuously because of the expansion and the redu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612177
Autor:
Groeningsson, Per, Fransson, Claes, Lundqvist, Peter, Nymark, Tanja, Lundqvist, Natalia, Chevalier, Roger, Leibundgut, Bruno, Spyromilio, Jason
High resolution spectra with UVES/VLT of SN 1987A from December 2000 until November 2005 show a number of high ionization lines from gas with velocities of roughly 350 km/s, emerging from the shocked gas formed by the ejecta-ring collision. These inc
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603815
Akademický článek
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Akademický článek
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Autor:
Gröningsson, P., Fransson, C., Leibundgut, B., Lundqvist, P., Challis, P., Chevalier, R. A., Spyromilio, J., Gröningsson, P., Fransson, C., Leibundgut, B., Lundqvist, P., Challis, P., Chevalier, R. A., Spyromilio, J.
Publikováno v:
Astronomy and Astrophysics; December 2008, Vol. 492 Issue: 2 p481-491, 11p
