Search Results - "FRANSSON, C"

The nebular spectra of SN 2012aw and constraints on stellar nucleosynthesis from oxygen emission lines by Jerkstrand, A., Smartt, S. J., Fraser, M., Fransson, C., Sollerman, J., Taddia, F., Kotak, R.

“…We present nebular-phase optical and near-infrared spectroscopy of the Type IIP supernova SN 2012aw combined with non-local thermodynamic equilibrium radiative…”
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THREE-DIMENSIONAL DISTRIBUTION OF EJECTA IN SUPERNOVA 1987A AT 10,000 DAYS by Larsson, J., Fransson, C., Spyromilio, J., Leibundgut, B., Challis, P., Chevalier, R. A., France, K., Jerkstrand, A., Kirshner, R. P., Lundqvist, P., Matsuura, M., McCray, R., Smith, N., Sollerman, J., Garnavich, P., Heng, K., Lawrence, S., Mattila, S., Migotto, K., Sonneborn, G., Taddia, F., Wheeler, J. C.

“…ABSTRACT Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present…”
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The Matter Beyond the Ring: The Recent Evolution of SN 1987A Observed by the Hubble Space Telescope by Larsson, J., Fransson, C., Alp, D., Challis, P., Chevalier, R. A., France, K., Kirshner, R. P., Lawrence, S., Leibundgut, B., Lundqvist, P., Mattila, S., Migotto, K., Sollerman, J., Sonneborn, G., Spyromilio, J., Suntzeff, N. B., Wheeler, J. C.

“…The nearby SN 1987A offers a spatially resolved view of the evolution of a young supernova (SN) remnant. Here we present recent Hubble Space Telescope imaging…”
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A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary by De, K, Kasliwal, M M, Ofek, E O, Moriya, T J, Burke, J, Cao, Y, Cenko, S B, Doran, G B, Duggan, G E, Fender, R P, Fransson, C, Gal-Yam, A, Horesh, A, Kulkarni, S R, Laher, R R, Lunnan, R, Manulis, I, Masci, F, Mazzali, P A, Nugent, P E, Perley, D A, Petrushevska, T, Piro, A L, Rumsey, C, Sollerman, J, Sullivan, M, Taddia, F

“…Compact neutron star binary systems are produced from binary massive stars through stellar evolution involving up to two supernova explosions. The final stages…”
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A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger by Mattila, S, Pérez-Torres, M, Efstathiou, A, Mimica, P, Fraser, M, Kankare, E, Alberdi, A, Aloy, M Á, Heikkilä, T, Jonker, P G, Lundqvist, P, Martí-Vidal, I, Meikle, W P S, Romero-Cañizales, C, Smartt, S J, Tsygankov, S, Varenius, E, Alonso-Herrero, A, Bondi, M, Fransson, C, Herrero-Illana, R, Kangas, T, Kotak, R, Ramírez-Olivencia, N, Väisänen, P, Beswick, R J, Clements, D L, Greimel, R, Harmanen, J, Kotilainen, J, Nandra, K, Reynolds, T, Ryder, S, Walton, N A, Wiik, K, Östlin, G

“…Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We…”
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A WC/WO star exploding within an expanding carbon–oxygen–neon nebula by Gal-Yam, A., Bruch, R., Schulze, S., Yang, Y., Perley, D. A., Irani, I., Sollerman, J., Kool, E. C., Soumagnac, M. T., Yaron, O., Strotjohann, N. L., Zimmerman, E., Barbarino, C., Kulkarni, S. R., Kasliwal, M. M., De, K., Yao, Y., Fremling, C., Yan, L., Ofek, E. O., Fransson, C., Filippenko, A. V., Zheng, W., Brink, T. G., Copperwheat, C. M., Foley, R. J., Brown, J., Siebert, M., Leloudas, G., Cabrera-Lavers, A. L., Garcia-Alvarez, D., Marante-Barreto, A., Frederick, S., Hung, T., Wheeler, J. C., Vinkó, J., Thomas, B. P., Graham, M. J., Duev, D. A., Drake, A. J., Dekany, R., Bellm, E. C., Rusholme, B., Shupe, D. L., Andreoni, I., Sharma, Y., Riddle, R., van Roestel, J., Knezevic, N.

“…The final fate of massive stars, and the nature of the compact remnants they leave behind (black holes and neutron stars), are open questions in astrophysics…”
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The morphology of the ejecta of SN 1987A at 31 yr from 1150 to 10 000 Å by Kangas, T, Fransson, C, Larsson, J, France, K, Chevalier, R A, Kirshner, R P, Lundqvist, P, Mattila, S, Sollerman, J, Utrobin, V P

“…ABSTRACT We present spectroscopy of the ejecta of SN 1987A in 2017 and 2018 from the Hubble Space Telescope and the Very Large Telescope, covering the…”
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CONSTRAINTS ON THE PROGENITOR SYSTEM AND THE ENVIRONS OF SN 2014J FROM DEEP RADIO OBSERVATIONS by Perez-Torres, M A, Lundqvist, P, Beswick, R J, Bjornsson, C I, Muxlow, T W B, Paragi, Z, Ryder, S, Alberdi, A, Fransson, C, MARCAIDE, J M, Marti-Vidal, I, Ros, E, Argo, M K, Guirado, J C

“…We report deep EVN and eMERLIN observations of the Type Ia SN 2014J in the nearby galaxy M82. Our observations represent, together with JVLA observations of…”
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Confined dense circumstellar material surrounding a regular type II supernova by Yaron, O., Perley, D. A., Gal-Yam, A., Groh, J. H., Horesh, A., Ofek, E. O., Kulkarni, S. R., Sollerman, J., Fransson, C., Rubin, A., Szabo, P., Sapir, N., Taddia, F., Cenko, S. B., Valenti, S., Arcavi, I., Howell, D. A., Kasliwal, M. M., Vreeswijk, P. M., Khazov, D., Fox, O. D., Cao, Y., Gnat, O., Kelly, P. L., Nugent, P. E., Filippenko, A. V., Laher, R. R., Wozniak, P. R., Lee, W. H., Rebbapragada, U. D., Maguire, K., Sullivan, M., Soumagnac, M. T.

“…With the advent of new wide-field, high-cadence optical transient surveys, our understanding of the diversity of core-collapse supernovae has grown…”
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Clumps and Rings of Ejecta in SNR 0540–69.3 as Seen in 3D by Larsson, J., Sollerman, J., Lyman, J. D., Spyromilio, J., Tenhu, L., Fransson, C., Lundqvist, P.

“…Abstract The distribution of ejecta in young supernova remnants offers a powerful observational probe of their explosions and progenitors. Here we present a 3D…”
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A STUBBORNLY LARGE MASS OF COLD DUST IN THE EJECTA OF SUPERNOVA 1987A by Matsuura, M, Dwek, E, Barlow, M J, Babler, B, Baes, M, Meixner, M, Cernicharo, Jose, Clayton, Geoff C, Dunne, L, Fransson, C

“…We present new Herschel photometric and spectroscopic observations of Supernova 1987A, carried out in 2012. Our dedicated photometric measurements provide new…”
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A PANCHROMATIC VIEW OF THE RESTLESS SN 2009ip REVEALS THE EXPLOSIVE EJECTION OF A MASSIVE STAR ENVELOPE by Margutti, R, Milisavljevic, D, Soderberg, A M, CHORNOCK, R, Zauderer, B A, Murase, K, Guidorzi, C, Sanders, N E, Kuin, P, Fransson, C

“…The double explosion of SN 2009ip in 2012 raises questions about our understanding of the late stages of massive star evolution. Here we present a…”
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Ejecta, Rings, and Dust in SN 1987A with JWST MIRI/MRS by Jones, O. C., Kavanagh, P. J., Barlow, M. J., Temim, T., Fransson, C., Larsson, J., Blommaert, J. A. D. L., Meixner, M., Lau, R. M., Sargent, B., Bouchet, P., Hjorth, J., Wright, G. S., Coulais, A., Fox, O. D., Gastaud, R., Glasse, A., Habel, N., Hirschauer, A. S., Jaspers, J., Krause, O., Lenkić, L., Nayak, O., Rest, A., Tikkanen, T., Wesson, R., Colina, L., van Dishoeck, E. F., Güdel, M., Henning, Th, Lagage, P.-O., Östlin, G., Ray, T. P., Vandenbussche, B.

“…Abstract Supernova (SN) 1987A is the nearest supernova in ∼400 yr. Using the JWST MIRI Medium Resolution Spectrograph, we spatially resolved the ejecta,…”
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JWST NIRSpec Observations of Supernova 1987A—From the Inner Ejecta to the Reverse Shock by Larsson, J., Fransson, C., Sargent, B., Jones, O. C., Barlow, M. J., Bouchet, P., Meixner, M., Blommaert, J. A. D. L., Coulais, A., Fox, O. D., Gastaud, R., Glasse, A., Habel, N., Hirschauer, A. S., Hjorth, J., Jaspers, J., Kavanagh, P. J., Krause, O., Lau, R. M., Lenkić, L., Nayak, O., Rest, A., Temim, T., Tikkanen, T., Wesson, R., Wright, G. S.

“…Abstract We present initial results from JWST NIRSpec integral field unit observations of the nearby supernova SN 1987A. The observations provide the first…”
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Extremely late photometry of the nearby SN 2011fe by Kerzendorf, W. E., McCully, C., Taubenberger, S., Jerkstrand, A., Seitenzahl, I., Ruiter, A. J., Spyromilio, J., Long, K. S., Fransson, C.

“…Abstract Type Ia supernovae are widely accepted to be the outcomes of thermonuclear explosions in white dwarf stars. However, many details of these explosions…”
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Constraining the physical properties of Type II-Plateau supernovae using nebular phase spectra by Maguire, K., Jerkstrand, A., Smartt, S. J., Fransson, C., Pastorello, A., Benetti, S., Valenti, S., Bufano, F., Leloudas, G.

“…We present a study of the nebular phase spectra of a sample of Type II-Plateau supernovae with identified progenitors or restrictive limits. The evolution of…”
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The complex circumstellar environment of supernova 2023ixf by Zimmerman, E. A., Irani, I., Chen, P., Gal-Yam, A., Schulze, S., Perley, D. A., Sollerman, J., Filippenko, A. V., Shenar, T., Yaron, O., Shahaf, S., Bruch, R. J., Ofek, E. O., De Cia, A., Brink, T. G., Yang, Y., Vasylyev, S. S., Ben Ami, S., Aubert, M., Badash, A., Bloom, J. S., Brown, P. J., De, K., Dimitriadis, G., Fransson, C., Fremling, C., Hinds, K., Horesh, A., Johansson, J. P., Kasliwal, M. M., Kulkarni, S. R., Kushnir, D., Martin, C., Matuzewski, M., McGurk, R. C., Miller, A. A., Morag, J., Neil, J. D., Nugent, P. E., Post, R. S., Prusinski, N. Z., Qin, Y., Raichoor, A., Riddle, R., Rowe, M., Rusholme, B., Sfaradi, I., Sjoberg, K. M., Soumagnac, M., Stein, R. D., Strotjohann, N. L., Terwel, J. H., Wasserman, T., Wise, J., Wold, A., Yan, L., Zhang, K.

“…The early evolution of a supernova (SN) can reveal information about the environment and the progenitor star. When a star explodes in vacuum, the first photons…”
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JWST MIRI Imager Observations of Supernova SN 1987A by Bouchet, P., Gastaud, R., Coulais, A., Barlow, M. J., Fransson, C., Kavanagh, P. J., Larsson, J., Temim, T., Jones, O. C., Hirschauer, A. S., Tikkanen, T., Blommaert, J. A. D. L., Fox, O. D., Glasse, A., Habel, N., Hjorth, J., Jaspers, J., Krause, O., Lau, R. M., Lenkić, L., Meixner, M., Nayak, O., Rest, A., Sargent, B., Wesson, R., Wright, G. S., Colina, L., van Dishoeck, E. F., Güdel, M., Henning, Th, Lagage, P.-O., Östlin, G., Ray, T. P., Vandenbussche, B.

“…Abstract There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 yr, gives us…”
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PS1-14bj: A HYDROGEN-POOR SUPERLUMINOUS SUPERNOVA WITH A LONG RISE AND SLOW DECAY by Lunnan, R., Chornock, R., Berger, E., Milisavljevic, D., Jones, D. O., Rest, A., Fong, W., Fransson, C., Margutti, R., Drout, M. R., Blanchard, P. K., Challis, P., Cowperthwaite, P. S., Foley, R. J., Kirshner, R. P., Morrell, N., Riess, A. G., Roth, K. C., Scolnic, D., Smartt, S. J., Smith, K. W., Villar, V. A., Chambers, K. C., Draper, P. W., Huber, M. E., Kaiser, N., Kudritzki, R.-P., Magnier, E. A., Metcalfe, N., Waters, C.

“…ABSTRACT We present photometry and spectroscopy of PS1-14bj, a hydrogen-poor superluminous supernova (SLSN) at redshift z = 0.5215 discovered in the last…”
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Properties of gamma-ray decay lines in 3D core-collapse supernova models, with application to SN 1987A and Cas A by Jerkstrand, A, Wongwathanarat, A, Janka, H-T, Gabler, M, Alp, D, Diehl, R, Maeda, K, Larsson, J, Fransson, C, Menon, A, Heger, A

“…ABSTRACT Comparison of theoretical line profiles to observations provides important tests for supernova explosion models. We study the shapes of radioactive…”
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