Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Bartel, Norbert"'
Autor:
Bietenholz, Michael F., Bartel, Norbert, Dwarkadas, Vikram V., Mtshweni, Leon, Orquera-Rojas, Carlos, Ellingsen, Simon, Horiuchi, Shinji, Tzioumis, Anastasios
We present broadband radio flux-density measurements supernova (SN) 1996cr, made with MeerKAT, ATCA and ALMA, and images made from very long baseline interferometry (VLBI) observations with the Australian Long Baseline Array. The spectral energy dist
Externí odkaz:
http://arxiv.org/abs/2210.16895
Autor:
Bietenholz, Michael F., Bartel, Norbert, Kamble, Atish, Margutti, Raffaella, Matthews, David Jacob, Milisavljevic, Danny
We report on new Very Long Baseline Interferometry radio measurements of supernova 2014C in the spiral galaxy NGC 7331, made with the European VLBI Network ~5 yr after the explosion, as well as on flux density measurements made with the Jansky Very L
Externí odkaz:
http://arxiv.org/abs/2012.12049
Autor:
Bietenholz, Michael F., Margutti, Raffaella, Coppejans, Deanne, Alexander, Kate D., Argo, Megan, Bartel, Norbert, Eftekhari, Tarraneh, Milisavljevic, Dan, Terreran, Giacomo, Berger, Edo
We report on VLBI observations of the fast and blue optical transient (FBOT), AT 2018cow. At ~62 Mpc, AT 2018cow is the first relatively nearby FBOT. The nature of AT 2018cow is not clear, although various hypotheses from a tidal disruption event to
Externí odkaz:
http://arxiv.org/abs/1911.08778
Autor:
Spekkens, Kristine, Chiang, Cynthia, Kothes, Roland, Rosolowsky, Erik, Rupen, Michael, Safi-Harb, Samar, Sievers, Jonathan, Sivakoff, Greg, Stairs, Ingrid, van der Marel, Nienke, Abraham, Bob, Alexandroff, Rachel, Bartel, Norbert, Baum, Stefi, Bietenholz, Michael, Boley, Aaron, Bond, Dick, Brown, Joanne, Brown, Toby, Davis, Gary, English, Jayanne, Fahlman, Greg, Ferrarese, Laura, Di Francesco, James, Gaensler, Bryan, Gaudet, Severin, Graber, Vanessa, Halpern, Mark, Hill, Alex, Hlavacek-Larrondo, Julie, Irwin, Judith, Johnstone, Doug, Joncas, Gilles, Kaspi, Vicky, Kavelaars, JJ, Liu, Adrian, Matthews, Brenda, Mirocha, Jordan, Monsalve, Raul, Ng, Cherry, O'Dea, Chris, Pen, Ue-Li, Plume, Rene, Robishaw, Tim, Sadavoy, Sarah, Sanghai, Viraj, Scholz, Paul, Simard, Luc, Shaw, Richard, Singh, Saurabh, Sigurdson, Kris, Smith, Kendrick, Stevens, David, Stil, Jeroen, Tulin, Sean, van Eck, Cameron, Wall, Jasper, West, Jennifer, Woods, Tyrone, Wulf, Dallas
This white paper submitted for the 2020 Canadian Long-Range Planning process (LRP2020) presents the prospects for Canada and the Square Kilometre Array (SKA) from 2020-2030, focussing on the first phase of the project (SKA1) scheduled to begin constr
Externí odkaz:
http://arxiv.org/abs/1911.03250
We discuss our VLA and VLBI observations of supernova 1986J, which is characterized by a compact radio-bright component within the expanding shell of ejecta. No other supernova (SN) has such a central component at cm wavelengths. The central componen
Externí odkaz:
http://arxiv.org/abs/1905.06690
We discuss the possibility of obtaining Fast Radio Bursts (FRBs) from the interior of supernovae, in particular SN 1986J. Young neutron stars are involved in many of the possible scenarios for the origin of FRBs, and it has been suggested that the hi
Externí odkaz:
http://arxiv.org/abs/1707.07746
We report on VLA measurements between 1 and 45 GHz of the evolving radio spectral energy distribution (SED) of SN 1986J, made in conjunction with VLBI imaging. The SED of SN 1986J is unique among supernovae, and shows an inversion point and a high-fr
Externí odkaz:
http://arxiv.org/abs/1707.06596
We present a new 5-GHz global-VLBI image of supernova 1986J, observed in 2014 at $t=31.6$ yr after the explosion, and compare it to previous images to show the evolution of the supernova. Our new image has a dynamic range of ~100 and a background rms
Externí odkaz:
http://arxiv.org/abs/1701.08447
Autor:
King, Ashley L., Miller, Jon M., Bietenholz, Michael, Gültekin, Kayhan, Reynolds, Mark T., Mioduszewski, Amy, Rupen, Michael, Bartel, Norbert
Publikováno v:
Nature Physics 12 (2016) 772-777
Observational constraints of relativistic jets from black holes has largely come from the most powerful and extended jets\cite{Jorstad05,Asada14}, leaving the nature of the low luminosity jets a mystery\cite{Falcke04}. M81* is one of the nearest low-
Externí odkaz:
http://arxiv.org/abs/1612.05654
Autor:
King, Ashley L., Miller, Jon M., Bietenholz, Michael, Gultekin, Kayhan, Reynolds, Mark, Mioduszewski, Amy, Rupen, Michael, Bartel, Norbert
Accreting black holes are observed to launch relativistic, collimated jets of matter and radiation. In some sources, discrete ejections have been detected with highly relativistic velocities. These particular sources typically have very high mass acc
Externí odkaz:
http://arxiv.org/abs/1412.5695