Results 71 to 80 of about 200,313 (264)

Fundamental physics studies in time domain and multi-messenger astronomy

Frontiers in Astronomy and Space Sciences
The era of ime domain and multi-messenger astronomy is not only leading to the development of a much broader set of detectors and instruments for astrophysical observations, but is also providing the means for astronomy to tie directly to cutting-edge ...
Chris Fryer
doaj   +1 more source

A surge of light at the birth of a supernova [PDF]

Nature, 2018
It is difficult to establish the properties of massive stars that explode as supernovae. The electromagnetic emission during the first minutes to hours after the emergence of the shock from the stellar surface conveys important information about the ...
M. Bersten, M. Bersten, M. Bersten, G. Folatelli, G. Folatelli, G. Folatelli, F. García, S. V. Dyk, O. Benvenuto, O. Benvenuto, M. Orellana, V. Buso, J. Sanchez, Masaomi Tanaka, K. Maeda, K. Maeda, A. Filippenko, Weikang Zheng, T. Brink, S. B. Cenko, S. B. Cenko, T. D. Jaeger, S. Kumar, T. Moriya, K. Nomoto, D. Perley, I. Shivvers, N. Smith   +27 more
semanticscholar   +1 more source

Radial Velocity Monitoring and Analysis of Gaia Astrometry of Selected Intermediate Mass Stars to Constrain Their Multiplicity Status

Astronomische Nachrichten, EarlyView.
ABSTRACT We present new radial velocity measurements of 13 selected intermediate mass stars (2–6 M⊙). The measurements were performed between 29 April and 6 September 2024 at the University Observatory Jena using the échelle spectrograph FLECHAS. The radial velocity of eight stars was found to be constant during our spectroscopic monitoring, namely: 17
J. Bätz, M. Mugrauer, K.‐U. Michel, J. Reichert, A. Tschirschky, L. Pietsch, F. Edelmann, R. Neuhäuser   +7 more
wiley   +1 more source

Supernovae, by Chandra and XMM-Newton

Universe
X-ray emission from supernovae can arise from multiple interactions during their evolution. The immediate explosion is sufficiently energetic to generate X-rays; so, too, is the impact of the shock as it runs into circumstellar matter from earlier mass ...
Eric M. Schlegel
doaj   +1 more source

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

ChemistryEurope, EarlyView.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer, Jan‐Hendrik Lamm, Hans‐Georg Stammler, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +6 more
wiley   +1 more source

Examining Neutrino–Matter Interactions in the Cassiopeia A Supernova

The Astrophysical Journal, 2023
Neutrino interactions with stellar material are widely believed to be fundamental to the explosion of massive stars. However, this important process has remained difficult to confirm observationally.
Toshiki Sato, Takashi Yoshida, Hideyuki Umeda, John P. Hughes, Keiichi Maeda, Shigehiro Nagataki, Brian J. Williams   +6 more
doaj   +1 more source

Ortho‐Carborane‐Derived Halogen‐Bonded Sandwich Complexes

Chemistry – A European Journal, EarlyView.
A systematic co‐crystallization‐study of a tridentate ortho‐carborane‐based halogen‐bond donor with halides was performed. Several association complexes are evaluated to give further insights into the halogen bond‐strength of this moiety. For iodide, rare octahedral coordination via a sandwich‐like complexation was observed in the solid state when ...
Christoph J. Vonnemann, Elric Engelage, Jas S. Ward, Kari Rissanen, Stefan M. Huber   +4 more
wiley   +1 more source

Observational data on Galactic supernova remnants: II. The supernova remnants within l = 90°-270° [PDF]

Serbian Astronomical Journal, 2004
We have collected all the available data on Galactic supernova remnants given in the literature. The data of Galactic supernova remnants located in the Galactic longitude interval l=90° - 270° in all spectral bands are represented in this work.
Guseinov O.H., Ankayand A., Tagieva S.O.
doaj   +1 more source

Young core collapse supernova remnants and their supernovae

, 2004
Massive star supernovae can be divided into four categories depending on the amount of mass loss from the progenitor star and the star's radius: red supergiant stars with most of the H envelope intact (SN IIP), stars with some H but most lost (IIL, IIb),
Bandiera R., Cappellaro E., Cappellaro E., Dwarkadas V., Garcia-Segura G., Green D. A., Green D. A., Lyne A. G., Meaburn J., Murdin P., Oliva E., Rees M. J., Roger A. Chevalier, Schaller G., Wellstein S.   +14 more
core   +3 more sources

The Carnegie Supernova Project I: analysis of stripped-envelope supernova light curves [PDF]

, 2017
Stripped-envelope (SE) supernovae (SNe) include H-poor (Type IIb), H-free (Type Ib) and He-free (Type Ic) events thought to be associated with the deaths of massive stars. The exact nature of their progenitors is a matter of debate.
F. Taddia, M. Stritzinger, M. Bersten, M. Bersten, M. Bersten, E. Baron, C. Burns, C. Contreras, C. Contreras, S. Holmbo, E. Hsiao, N. Morrell, M. Phillips, J. Sollerman, N. Suntzeff   +14 more
semanticscholar   +1 more source