Zobrazeno 1 - 10
of 679
pro vyhledávání: '"Kotak R"'
Autor:
Pursiainen, M., Killestein, T. L., Kuncarayakti, H., Charalampopoulos, P., Lyman, J., Kotak, R., Leloudas, G., Coppejans, D., Kravtsov, T., Maeda, K., Nagao, T., Taguchi, K., Ackley, K., Dhillon, V. S., Galloway, D. K., Kumar, A., O'Neill, D., Steeghs, D.
We present the analysis of optical data of a bright and extremely-rapidly evolving transient, AT2024wpp, whose properties are similar to the enigmatic AT2018cow (aka the Cow). AT2024wpp rose to a peak brightness of c=-21.9mag in 4.3d and remained abo
Externí odkaz:
http://arxiv.org/abs/2411.03272
Autor:
Warwick, B., Lyman, J., Pursiainen, M., Coppejans, D. L., Galbany, L., Jones, G. T., Killestein, T. L., Kumar, A., Oates, S. R., Ackley, K., Anderson, J. P., Aryan, A., Breton, R. P., Chen, T. W., Clark, P., Dhillon, V. S., Dyer, M. J., Gal-Yam, A., Galloway, D. K., Gutiérrez, C. P., Gromadzki, M., Inserra, C., Jiménez-Ibarra, F., Kelsey, L., Kotak, R., Kravtsov, T., Kuncarayakti, H., Magee, M. R., Matilainen, K., Mattila, S., Müller-Bravo, T. E., Nicholl, M., Noysena, K., Nuttall, L. K., O'Brien, P., O'Neill, D., Pallé, E., Pessi, T., Petrushevska, T., Pignata, G., Pollacco, D., Ragosta, F., Ramsay, G., Sahu, A., Sahu, D. K., Singh, A., Sollerman, J., Stanway, E., Starling, R., Steeghs, D., Teja, R. S., Ulaczyk, K.
SN 2023tsz is a Type Ibn supernova (SNe Ibn) discovered in an extremely low-mass host. SNe Ibn are an uncommon subtype of stripped-envelope core-collapse SNe. They are characterised by narrow helium emission lines in their spectra and are believed to
Externí odkaz:
http://arxiv.org/abs/2409.14147
Autor:
Valerin, G., Pastorello, A., Mason, E., Reguitti, A., Benetti, S., Cai, Y. -Z., Chen, T. -W., Eappachen, D., Elias-Rosa, N., Fraser, M., Gangopadhyay, A., Hsiao, E. Y., Howell, D. A., Inserra, C., Izzo, L., Jencson, J., Kankare, E., Kotak, R., Lundqvist, P., Mazzali, P. A., Misra, K., Pignata, G., Prentice, S. J., Sand, D. J., Smartt, S. J., Stritzinger, M. D., Tartaglia, L., Valenti, S., Anderson, J. P., Andrews, J. E., Amaro, R. C., Barbarino, C., Brennan, S., Bufano, F., Callis, E., Cappellaro, E., Dastidar, R., Della Valle, M., Fiore, A., Fulton, M. D., Galbany, L., Gromadzki, M., Heikkilä, T., Hiramatsu, D., Karamehmetoglu, E., Kuncarayakti, H., Leloudas, G., Limongi, M., Lundquist, M., McCully, C., Müller-Bravo, T. E., Nicholl, M., Ochner, P., Gonzalez, E. Padilla, Paraskeva, E., Pellegrino, C., Rau, A., Reichart, D. E., Reynolds, T. M., Roy, R., Salmaso, I., Shahbandeh, M., Singh, M., Sollerman, J., Turatto, M., Tomasella, L., Wyatt, S., Young, D. R.
We investigate the spectroscopic characteristics of Intermediate Luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. We present the extensive optical and near-inf
Externí odkaz:
http://arxiv.org/abs/2407.21733
Autor:
Valerin, G., Pastorello, A., Reguitti, A., Benetti, S., Cai, Y. -Z., Chen, T. -W., Eappachen, D., Elias-Rosa, N., Fraser, M., Gangopadhyay, A., Hsiao, E. Y., Howell, D. A., Inserra, C., Izzo, L., Jencson, J., Kankare, E., Kotak, R., Mazzali, P. A., Misra, K., Pignata, G., Prentice, S. J., Sand, D. J., Smartt, S. J., Stritzinger, M. D., Tartaglia, L., Valenti, S., Anderson, J. P., Andrews, J. E., Amaro, R. C., Brennan, S., Bufano, F., Callis, E., Cappellaro, E., Dastidar, R., Della Valle, M., Fiore, A., Fulton, M. D., Galbany, L., Heikkilä, T., Hiramatsu, D., Karamehmetoglu, E., Kuncarayakti, H., Leloudas, G., Lundquist, M., McCully, C., Müller-Bravo, T. E., Nicholl, M., Ochner, P., Gonzalez, E. Padilla, Paraskeva, E., Pellegrino, C., Reichart, D. E., Reynolds, T. M., Roy, R., Salmaso, I., Singh, M., Turatto, M., Tomasella, L., Wyatt, S., Young, D. R.
We investigate the photometric characteristics of a sample of Intermediate Luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. We present the multi-wavelength pho
Externí odkaz:
http://arxiv.org/abs/2407.21671
Autor:
Killestein, T. L., Kelsey, L., Wickens, E., Nuttall, L., Lyman, J., Krawczyk, C., Ackley, K., Dyer, M. J., Jiménez-Ibarra, F., Ulaczyk, K., O'Neill, D., Kumar, A., Steeghs, D., Galloway, D. K., Dhillon, V. S., O'Brien, P., Ramsay, G., Noysena, K., Kotak, R., Breton, R. P., Pallé, E., Pollacco, D., Awiphan, S., Belkin, S., Chote, P., Clark, P., Coppejans, D., Duffy, C., Eyles-Ferris, R., Godson, B., Gompertz, B., Graur, O., Irawati, P., Jarvis, D., Julakanti, Y., Kennedy, M. R., Kuncarayakti, H., Levan, A., Littlefair, S., Magee, M., Mandhai, S., Sánchez, D. Mata, Mattila, S., McCormac, J., Mullaney, J., Munday, J., Patel, M., Pursiainen, M., Rana, J., Sawangwit, U., Stanway, E., Starling, R., Warwick, B., Wiersema, K.
Time-domain astrophysics continues to grow rapidly, with the inception of new surveys drastically increasing data volumes. Democratised, distributed approaches to training sets for machine learning classifiers are crucial to make the most of this tor
Externí odkaz:
http://arxiv.org/abs/2406.02334
Autor:
Moran, S., Kotak, R., Fraser, M., Pastorello, A., Cai, Y. -Z., Valerin, G., Mattila, S., Cappellaro, E., Kravtsov, T., Gutiérrez, C. P., Elias-Rosa, N., Reguitti, A., Lundqvist, P., Brink, T. G., Filippenko, A. V., Wang, X. -F.
We present results from a five-month-long observing campaign of the unusual transient AT 2022fnm, which displays properties common to both luminous red novae (LRNe) and intermediate-luminosity red transients (ILRTs). Although its photometric evolutio
Externí odkaz:
http://arxiv.org/abs/2406.02816
Autor:
Charalampopoulos, P., Kotak, R., Wevers, T., Leloudas, G., Kravtsov, T., Pursiainen, M., Ramsden, P., Reynolds, T. M., Aamer, A., Anderson, J. P., Arcavi, I., Cai, Y. -Z., Chen, T. -W., Dennefeld, M., Galbany, L., Gromadzki, M., Guti'errez, C. P., Ihanec, N., Kangas, T., Kankare, E., Kool, E., Lawrence, A., Lundqvist, P., Makrygianni, L., Mattila, S., Müller-Bravo, T. E., Nicholl, M., Onori, F., Sahu, A., Smartt, S. J., Sollerman, J., Wang, Y., Young, D. R.
Publikováno v:
A&A 689, A350 (2024)
We present an extensive analysis of the optical and UV properties of AT2023clx, the closest TDE to date, that occurred in the nucleus of the interacting LINER galaxy, NGC3799 (z=0.01107). After correcting for the host reddening (E(B-V) = 0.179 mag),
Externí odkaz:
http://arxiv.org/abs/2401.11773
Observations of type Ia supernova SN 2020nlb up to 600 days after explosion, and the distance to M85
Autor:
Williams, S. C., Kotak, R., Lundqvist, P., Mattila, S., Mazzali, P. A., Pastorello, A., Reguitti, A., Stritzinger, M. D., Fiore, A., Hook, I. M., Moran, S., Salmaso, I.
The type Ia supernova (SN Ia) SN 2020nlb was discovered in the Virgo Cluster galaxy M85 shortly after explosion. Here we present observations that include one of the earliest high-quality spectra and some of the earliest multi-colour photometry of a
Externí odkaz:
http://arxiv.org/abs/2401.08759
Autor:
Nagao, T., Patat, F., Cikota, A., Baade, D., Mattila, S., Kotak, R., Kuncarayakti, H., Bulla, M., Ayala, B.
Publikováno v:
A&A 681, A11 (2024)
The explosion processes of supernovae (SNe) are imprinted in their explosion geometries. Here, we study the intrinsic polarization of 15 hydrogen-rich core-collapse SNe and explore the relation with the photometric and spectroscopic properties. Our s
Externí odkaz:
http://arxiv.org/abs/2308.00996
Publikováno v:
A&A 678, A43 (2023)
We investigate polarization spectra of hydrogen-rich core-collapse supernovae (Type~II SNe). The polarization signal from SNe contains two independent components: intrinsic SN polarization and interstellar polarization (ISP). From these components, w
Externí odkaz:
http://arxiv.org/abs/2307.11455