Zobrazeno 1 - 10
of 367
pro vyhledávání: '"Kosakowski, P."'
Autor:
Kosakowski, Alekzander, Dorsch, Matti, Brown, Warren R., Kupfer, Thomas, Daya, Fatma Ben, Kilic, Mukremin
We present the discovery and analysis of a nearby eclipsing ultra-compact accreting binary at coordinates 11:38:10.91 $-$51:39:49.15 (SMSS J1138$-$5139), the first well-constrained LISA-detectable Type Ia supernova progenitor. Our time series optical
Externí odkaz:
http://arxiv.org/abs/2411.19391
Autor:
Jewett, Gracyn, Kilic, Mukremin, Bergeron, Pierre, Moss, Adam, Blouin, Simon, Brown, Warren R., Kosakowski, Alekzander, Toonen, Silvia, Agüeros, Marcel A.
We present a detailed model atmosphere analysis of massive white dwarfs with $M > 0.9~M_\odot$ and $T_{\rm eff}\geq11,000$ K in the Montreal White Dwarf Database 100 pc sample and the Pan-STARRS footprint. We obtained follow-up optical spectroscopy o
Externí odkaz:
http://arxiv.org/abs/2407.04827
Autor:
Groot, Paul J., Bloemen, S., Vreeswijk, P., van Roestel, J., Jonker, P. G., Nelemans, G., Klein-Wolt, M., Poole, R. Le, Pieterse, D., Rodenhuis, M., Boland, W., Haverkorn, M., Aerts, C., Bakker, R., Balster, H., Bekema, M., Dijkstra, E., Dolron, P., Elswijk, E., van Elteren, A., Engels, A., Fokker, M., de Haan, M., Hahn, F., ter Horst, R., Lesman, D., Kragt, J., Morren, J., Nillissen, H., Pessemier, W., de Rijke, A, Raskin, G., Scheers, L. H. A., Schuil, M., Timmer, S. T., Amaral, L. Antunes, Arancibia-Rojas, E., Arcavi, I., Blagorodnova, N., Biswas, S., Breton, R., Dawson, H., Dayal, P., De Wet, S., Duffy, C., Faris, S., Fausnaugh, M., Gal-Yam, A., Geier, S., Horesh, A., Johnston, C., Wijnands, R. A. D., Modiano, D., Katusiime, G., Kelley, C., Kosakowski, A., Kupfer, T., Leloudas, G., Mogawana, O., Munday, J., Paice, J. A., Patat, F., Pelisoli, I., Ramsay, G., Ranaivomanana, P. T., Ruiz-Carmona, R., Schaffenroth, V., Scaringi, S., Stoppa, F., Street, R., Tranin, H., Uzundag, M., Valenti, S., Veresvarska, M., Vuckovic, M., Wichern, H. C. I., Wijers, R. A. M. J., Zimmerman, E.
Publikováno v:
PASP 136 115003 (2024)
The main science aim of the BlackGEM array is to detect optical counterparts to gravitational wave mergers. Additionally, the array will perform a set of synoptic surveys to detect Local Universe transients and short time-scale variability in stars a
Externí odkaz:
http://arxiv.org/abs/2405.18923
Autor:
Boiger, Romana, Churakov, Sergey V., Llagaria, Ignacio Ballester, Kosakowski, Georg, Wüst, Raphael, Prasianakis, Nikolaos I.
Deep subsurface exploration is important for mining, oil and gas industries, as well as in the assessment of geological units for the disposal of chemical or nuclear waste, or the viability of geothermal energy systems. Typically, detailed examinatio
Externí odkaz:
http://arxiv.org/abs/2403.18495
Autor:
Moss, Adam, Bergeron, P., Kilic, Mukremin, Jewett, Gracyn, Brown, Warren R., Kosakowski, Alekzander, Vincent, Olivier
We report the discovery of spectroscopic variations in the magnetic DBA white dwarf SDSS J091016.43+210554.2. Follow-up time-resolved spectroscopy at the Apache Point Observatory (APO) and the MMT show significant variations in the H absorption lines
Externí odkaz:
http://arxiv.org/abs/2312.05749
We present an analysis of new and archival data to the 20.506-minute LISA verification binary J052610.42$+$593445.32 (J0526$+$5934). Our joint spectroscopic and photometric analysis finds that the binary contains an unseen $M_1=0.89\pm0.11~{\rm M_\od
Externí odkaz:
http://arxiv.org/abs/2307.00645
Autor:
Kosakowski, Alekzander, Brown, Warren R., Kilic, Mukremin, Kupfer, Thomas, Bédard, Antoine, Gianninas, A., Agüeros, Marcel A., Barrientos, Manuel
We present the results from our ongoing spectroscopic survey targeting low mass white dwarf binaries, focusing on the southern sky. We used a Gaia DR2 and eDR3 based selection and identified 28 new binaries, including 19 new extremely low mass white
Externí odkaz:
http://arxiv.org/abs/2305.03079
Publikováno v:
npj Materials Sustainability, Vol 2, Iss 1, Pp 1-8 (2024)
Abstract Cement-based materials are integral to radioactive waste repositories, providing versatile solutions for diverse disposal strategies. They are part of the multi-barrier system, and serve to immobilize waste materials, limit the release of ra
Externí odkaz:
https://doaj.org/article/3a6d072985c543b799ad90860322497f
Autor:
Kilic, Mukremin, Moss, Adam G., Kosakowski, Alekzander, Bergeron, P., Conly, Annamarie A., Brown, Warren R., Toonen, Silvia, Williams, Kurtis A., Dufour, P.
We search for merger products among the 25 most massive white dwarfs in the Montreal White Dwarf Database 100 pc sample through follow-up spectroscopy and high-cadence photometry. We find an unusually high fraction, 40%, of magnetic white dwarfs amon
Externí odkaz:
http://arxiv.org/abs/2211.05938
Autor:
Kosakowski, Daniel, Ugalino, Mark Ivan, Fisher, Robert, Graur, Or, Bobrick, Alexey, Perets, Hagai B.
The radiosotope $^{44}$Ti is produced through $\alpha$-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of $^{44}$Ti, either through late-time light curves of SNe Ia, or directly
Externí odkaz:
http://arxiv.org/abs/2210.10804