Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Omand C"'
Autor:
Gkini, A., Fransson, C., Lunnan, R., Schulze, S., Poidevin, F., Sarin, N., Könyves-Tóth, R., Sollerman, J., Omand, C. M. B., Brennan, S. J., Hinds, K. R., Anderson, J. P., Bronikowski, M., Chen, T. -W., Dekany, R., Fraser, M., Fremling, C., Galbany, L., Gal-Yam, A., Gangopadhyay, A., Geier, S., Gonzalez, E. P., Gromadzki, M., Groom, S. L., Gutiérrez, C. P., Hiramatsu, D., Howell, D. A., Hu, Y., Inserra, C., Kopsacheili, M., Lacroix, L., Masci, F. J., Matilainen, K., McCully, C., Moore, T., Müller-Bravo, T. E., Nicholl, M., Pellegrino, C., Pérez-Fournon, I., Perley, D. A., Pessi, P. J., Petrushevska, T., Pignata, G., Ragosta, F., Sahu, A., Singh, A., Srivastav, S., Wise, J. L., Yan, L., Young, D. R.
We present photometric and spectroscopic observations of SN2020xga and SN2022xgc, two hydrogen-poor superluminous supernovae (SLSNe-I) at $z = 0.4296$ and $z = 0.3103$ respectively, that show an additional set of broad Mg II absorption lines, blueshi
Externí odkaz:
http://arxiv.org/abs/2409.17296
Autor:
Gkini, A., Lunnan, R., Schulze, S., Dessart, L., Brennan, S. J., Sollerman, J., Pessi, P. J., Nichol, M., Yan, L., Omand, C. M. B., Kangas, T., Moore, T., Anderson, J. P., Chen, T. -W., Gonzalez, E. P., Gromadzki, M., Gutiérrez, Claudia P., Hiramatsu, D., Howell, D. A., Ihanec, N., Inserra, C., McCully, C., Müller-Bravo, T. E., Pellegrino, C., Pignata, G., Pursiainen, M., Young, D. R.
SN\,2020zbf is a hydrogen-poor superluminous supernova (SLSN) at $z = 0.1947$ that shows conspicuous \ion{C}{II} features at early times, in contrast to the majority of H-poor SLSNe. Its peak magnitude is $M_{\rm g}$ = $-21.2$~mag and its rise time (
Externí odkaz:
http://arxiv.org/abs/2310.06814
Autor:
Margutti, Raffaella, Bright, J. S., Matthews, D. J., Coppejans, D. L., Alexander, K. D., Berger, E., Bietenholz, M., Chornock, R., DeMarchi, L., Drout, M. R., Eftekhari, T., Jacobson-Galan, W. V., Laskar, T., Milisavljevic, D., Murase, K., Nicholl, M., Omand, C. M. B., Stroh, M., Terreran, G., VanderLey, A. Z.
We present the results from a multi-year radio campaign of the superluminous supernova (SLSN) 2017ens, which yielded the earliest radio detection of a SLSN to date at the age of $\sim$3.3 years after explosion. SN2017ens was not detected at radio fre
Externí odkaz:
http://arxiv.org/abs/2306.13730
Autor:
Schweyer, T., Sollerman, J., Jerkstrand, A., Ergon, M., Chen, T. -W., Omand, C. M. B., Schulze, S., Coughlin, M. W., Andreoni, I., Fremling, C., Rau, A., Sharma, Y., Strotjohann, N. L., Yan, L., Graham, M. J., Kasliwal, M. M., Laher, R. R., Purdum, J., Rosnet, P., Rusholme, B., Smith, R.
We present and analyze observations of the Type Ib supernova (SN) 2019odp (a.k.a ZTF19abqwtfu) covering epochs within days of the explosion to the nebular phase at 360 d post-explosion. We discuss them in the context of recombination cooling emission
Externí odkaz:
http://arxiv.org/abs/2303.14146
Autor:
Poidevin, F., Omand, C. M. B., Könyves-Tóth, Réka, Pérez-Fournon, I., Clavero, R., Geier, S., Angel, C. Jimenez, Marques-Chaves, R., Shirley, R.
New optical photometric, spectrocopic and imaging polarimetry data are combined with publicly available data to study some of the physical properties of the two H-poor superluminous supernovae (SLSN) SN 2021bnw and SN 2021fpl. For each SLSN, the best
Externí odkaz:
http://arxiv.org/abs/2212.07628
Autor:
West, S. L., Lunnan, R., Omand, C. M. B., Kangas, T., Schulze, S., Strotjohann, N., Yang, S., Fransson, C., Sollerman, J., Perley, D., Yan, L., Chen, T. -W., Chen, Z. H., Taggart, K., Fremling, C., Bloom, J. S., Drake, A., Graham, M. J., Kasliwal, M. M., Laher, R., Medford, M. S., Neill, J. D., Riddle, R., Shupe, D.
Publikováno v:
A&A 670, A7 (2023)
SN\,2020qlb (ZTF20abobpcb) is a hydrogen-poor superluminous supernova (SLSN-I) that is among the most luminous (maximum M$_{g} = -22.25$ mag) and that has one of the longest rise times (77 days from explosion to maximum). We estimate the total radiat
Externí odkaz:
http://arxiv.org/abs/2205.11143
Autor:
Poidevin, F., Omand, C. M. B., Pérez-Fournon, I., Clavero, R., Shirley, R., Marques-Chaves, R., Angel, C. Jimenez, Geier, S.
Optical imaging polarimetry was conducted on the hydrogen poor superluminous supernova 2020znr during 3 phases after maximum light (approximately +34 days, +288 days and +289 days). After instrumental and interstellar polarization correction, all mea
Externí odkaz:
http://arxiv.org/abs/2201.03887
Autor:
Eftekhari, T., Margalit, B., Omand, C. M. B., Berger, E., Blanchard, P. K., Demorest, P., Metzger, B. D., Murase, K., Nicholl, M., Villar, V. A., Williams, P. K. G., Alexander, K. D., Chatterjee, S., Coppejans, D. L., Cordes, J. M., Gomez, S., Hosseinzadeh, G., Hsu, B., Kashiyama, K., Margutti, R., Yin, Y.
We present the largest and deepest late-time radio and millimeter survey to date of superluminous supernovae (SLSNe) and long duration gamma-ray bursts (LGRBs) to search for associated non-thermal synchrotron emission. Using the Karl G. Jansky Very L
Externí odkaz:
http://arxiv.org/abs/2010.06612
Autor:
Law, C. J., Omand, C. M. B., Kashiyama, K., Murase, K., Bower, G. C., Aggarwal, K., Burke-Spolaor, S., Butler, B. J., Demorest, P., Lazio, T. J. W., Linford, J., Tendulkar, S. P., Rupen, M. P.
We present results of a search for late-time radio emission and Fast Radio Bursts (FRBs) from a sample of type-I superluminous supernovae (SLSNe-I). We used the Karl G. Jansky Very Large Array to observe ten SLSN-I more than 5 years old at a frequenc
Externí odkaz:
http://arxiv.org/abs/1910.02036
High energy ($> 250$ keV) emission has been detected persisting for several tens of seconds after the initial spike of magnetar giant flares. It has been conjectured that this emission might arise via inverse Compton scattering in a highly extended c
Externí odkaz:
http://arxiv.org/abs/1707.02922