Results 71 to 80 of about 197,763 (248)

Oxygen emission in remnants of thermonuclear supernovae as a probe for their progenitor system [PDF]

, 2015
Recent progress in numerical simulations of thermonuclear supernova explosions brings up a unique opportunity in studying the progenitors of Type Ia supernovae.
Blinnikov, S. I., Hillebrandt, W., Kaastra, J. S., Kosenko, D., Kromer, M., Pakmor, R.   +5 more
core   +3 more sources

THE ORIGIN OF KEPLER'S SUPERNOVA REMNANT [PDF]

, 2012
It is now well established that Kepler's supernova remnant (SNR) is the result of a Type Ia explosion. With an age of 407 yr and an angular diameter of ∼4′, Kepler is estimated to be between 3.0 and 7.0 kpc distant.
D. Patnaude, C. Badenes, C. Badenes, C. Badenes, Sangwook Park, J. Laming   +5 more
semanticscholar   +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

Pulsar wind nebulae in supernova remnants [PDF]

, 2000
A spherically symmetric model is presented for the interaction of a pulsar wind with the associated supernova remnant. This results in a pulsar wind nebula whose evolution is coupled to the evolution of the surrounding supernova remnant.
Achterberg, A., Gallant, Y. A., Tóth, G., van der Swaluw, E.   +3 more
core   +2 more sources

DUST IN A TYPE Ia SUPERNOVA PROGENITOR: SPITZER SPECTROSCOPY OF KEPLER'S SUPERNOVA REMNANT [PDF]

, 2012
Characterization of the relatively poorly understood progenitor systems of Type Ia supernovae is of great importance in astrophysics, particularly given the important cosmological role that these supernovae play. Kepler's supernova remnant, the result of
B. Williams, K. Borkowski, S. Reynolds, P. Ghavamian, W. Blair, K. Long, R. Sankrit   +6 more
semanticscholar   +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

Expansion Properties of the Young Supernova Type Iax Remnant Pa 30 Revealed

The Astrophysical Journal Letters
The recently discovered Pa 30 nebula, the putative type Iax supernova remnant associated with the historical supernova of 1181 AD, shows puzzling characteristics that make it unique among known supernova remnants.
Tim Cunningham, Ilaria Caiazzo, Nikolaus Z. Prusinski, James Fuller, John C. Raymond, S. R. Kulkarni, James D. Neill, Paul Duffell, Chris Martin, Odette Toloza, David Charbonneau, Scott J. Kenyon, Zeren Lin, Mateusz Matuszewski, Rosalie McGurk, Abigail Polin, Philippe Z. Yao   +16 more
doaj   +1 more source

Multiband Emission from Pulsar Wind Nebulae: A Possible Injection Spectrum [PDF]

, 2010
A recent research shows that particles with a spectrum of a relativistic Maxwellian plus a high-energy tail can be accelerated by relativistic collisionless shocks.
Fang, J., Zhang, L.
core   +1 more source

SUPERNOVA REMNANT PROGENITOR MASSES IN M31 [PDF]

, 2012
Using Hubble Space Telescope photometry, we age-date 59 supernova remnants (SNRs) in the spiral galaxy M31 and use these ages to estimate zero-age main-sequence masses (MZAMS) for their progenitors. To accomplish this, we create color–magnitude diagrams (
Z. Jennings, B. Williams, Jeremiah W. Murphy, J. Dalcanton, K. Gilbert, A. Dolphin, M. Fouesneau, D. Weisz   +7 more
semanticscholar   +1 more source

Trigonal Bipyramidal Clusters [Tl5]7−: Synthesis and Characterization of the Zintl Phase K7−xAxTl5 (A = Rb, Cs; 0 < x ≤ 2.35)

Chemistry – A European Journal, EarlyView.
Mixed alkali metals, potassium and additional rubidium or cesium, allow for the synthesis of a straightforward, electron‐precise Zintl phase K7−xAxTl5. The new phase is characterized by SCXRD, PXRD, and DFT. Its metastability is proven by DSC measurements.
Vanessa F. Schwinghammer, Tomáš Kovářík, Ilya G. Shenderovich, Ján Minár, Stefanie Gärtner   +4 more
wiley   +1 more source