Zobrazeno 1 - 10
of 29 430
pro vyhledávání: '"Type Ia supernovæ"'
There is a persistent $\sim 5 \sigma$ tension between the value of the Hubble constant, as derived from either the local distance ladder or the cosmic microwave background, signaling either unaccounted for systematics in the measurements or `new phys
Externí odkaz:
http://arxiv.org/abs/2411.05642
Many promising explosion models for the elusive origin of Type Ia supernovae (SNe Ia) ultimately fail to completely reproduce a number of observed properties of these events. One limiting factor for many of these models is the use of the local thermo
Externí odkaz:
http://arxiv.org/abs/2410.22276
Autor:
Mo, Geoffrey, De, Kishalay, Wiston, Eli, J., Nayana A., Margutti, Raffaella, Frostig, Danielle, Sollerman, Jesper, Sharma, Yashvi, Moriya, Takashi J., Burdge, Kevin B., Jencson, Jacob, Karambelkar, Viraj R., Lourie, Nathan P.
Type Ia supernovae arise from the thermonuclear explosions of white dwarfs in multiple star systems. A rare sub-class of SNe Ia exhibit signatures of interaction with circumstellar material (CSM), allowing for direct constraints on companion material
Externí odkaz:
http://arxiv.org/abs/2410.14644
Autor:
Schinasi-Lemberg, Eden, Kushnir, Doron
Type Ia supernovae (SNe Ia) are likely the thermonuclear explosions of carbon-oxygen (CO) white-dwarf (WD) stars, but the exact nature of their progenitor systems remains uncertain. Recent studies have suggested that a propagating detonation within a
Externí odkaz:
http://arxiv.org/abs/2410.02849
Autor:
Siggia, Vincent R., Carlson, Eric D.
The expansion of the universe in $f(R,T)$ gravity is studied. By focusing on functions of the form $f(R,T)=f_1(R)+f_2(T)$, we assert that present day acceleration can be achieved if the functional form of $f_2(T)$ either grows slowly or falls as a fu
Externí odkaz:
http://arxiv.org/abs/2410.01967
Autor:
Giarè, William
Baryon Acoustic Oscillation (BAO) measurements from the Dark Energy Spectroscopic Instrument (DESI) collaboration, when combined with Planck satellite Cosmic Microwave Background (CMB) data and Type Ia Supernovae, suggest a preference for Dynamical D
Externí odkaz:
http://arxiv.org/abs/2409.17074
Autor:
Bora, Zsófia, Könyves-Tóth, Réka, Vinkó, József, Bánhidi, Dominik, Bíró, Imre Barna, Bostroem, K. Azalee, Bódi, Attila, Burke, Jamison, Csányi, István, Cseh, Borbála, Farah, Joseph, Filippenko, Alexei V., Hegedűs, Tibor, Hiramatsu, Daichi, Horti-Dávid, Ágoston, Howell, D. Andrew, Jha, Saurabh W., Kalup, Csilla, Krezinger, Máté, Kriskovics, Levente, McCully, Curtis, Newsome, Megan, Ordasi, András, Gonzalez, Estefania Padilla, Pál, András, Pellegrino, Craig, Seli, Bálint, Sódor, Ádám, Szabó, Zsófia Marianna, Szabó, Norton O., Szakáts, Róbert, Szalai, Tamás, Székely, Péter, Terreran, Giacomo, Varga, Vázsony, Vida, Krisztián, Wang, Xiaofeng, Wheeler, J. Craig
The progenitor system(s) as well as the explosion mechanism(s) of thermonuclear (Type Ia) supernovae are long-standing issues in astrophysics. Here we present ejecta masses and other physical parameters for 28 recent Type Ia supernovae inferred from
Externí odkaz:
http://arxiv.org/abs/2408.11928
Autor:
Iwata, Kazuya, Maeda, Keiichi
The cellular structure is considered to be a key as a criterion in initiation, propagation, and quenching of terrestrial detonation. While a few studies on type Ia supernovae, which are known to involve detonation, have addressed the importance of th
Externí odkaz:
http://arxiv.org/abs/2408.10721
Autor:
Pollin, J. M., Sim, S. A., Pakmor, R., Callan, F. P., Collins, C. E., Shingles, L. J., Roepke, F. K., Srivastav, S.
A leading model for Type Ia supernovae involves the double-detonation of a sub-Chandrasekhar mass white dwarf. Double-detonations arise when a surface helium shell detonation generates shockwaves that trigger a core detonation; this mechanism may be
Externí odkaz:
http://arxiv.org/abs/2408.00917
Autor:
Korol, Valeriya, Buscicchio, Riccardo, Pakmor, Ruediger, Morán-Fraile, Javier, Moore, Christopher J., de Mink, Selma E.
Publikováno v:
A&A 691, A44 (2024)
The nature of progenitors of Type Ia supernovae has long been debated, primarily due to the elusiveness of the progenitor systems to traditional electromagnetic observation methods. We argue that gravitational wave observations with the upcoming Lase
Externí odkaz:
http://arxiv.org/abs/2407.03935