Results 41 to 50 of about 8,434 (211)

Constraints on Association of Single-pulse Gamma-ray Bursts and Supernovae [PDF]

, 1998
We explore the hypothesis, similar to one recently suggested by Bloom and colleagues, that some nearby supernovae are associated with smooth, single-pulse gamma-ray bursts, possibly having no emission above ~ 300 keV.
Hudson M. J., J. P. Norris, J. T. Bonnell, K. Watanabe, Piro L.   +4 more
core   +1 more source

Circumstellar Emission from Type Ib and Ic Supernovae [PDF]

The Astrophysical Journal, 2006
The presumed Wolf-Rayet star progenitors of Type Ib/c supernovae have fast, low density winds and the shock waves generated by the supernova interaction with the wind are not expected to be radiative at typical times of observation. The injected energy spectrum of radio emitting electrons typically has an observed index p=3, which is suggestive of ...
Chevalier, Roger A., Fransson, Claes
openaire   +2 more sources

A Central Excess of Stripped-Envelope Supernovae within Disturbed Galaxies

, 2012
This paper presents an analysis of core-collapse supernova distributions in isolated and interacting host galaxies, paying close attention to the selection effects involved in conducting host galaxy supernova studies.
Alonso-Herrero, Anderson, Anderson, Anderson, Anderson, Anderson, Arcavi, Armus, Barnes, Barnes, Bartunov, Bartunov, Boissier, Cappellaro, Caputi, Conselice, Crowther, Dessart, Djorgovski, Ekström, Eldridge, Eldridge, Eldridge, Elias-Rosa, Elmegreen, Evans, Filippenko, Filippenko, Franceschini, Gal-Yam, Georgy, Habergham, Hakobyan, Heger, Henry, Hibbard, Iwasawa, J. P. Anderson, James, Joseph, Joseph, Kaiser, Keel, Kennicutt, Kennicutt, Kewley, Kewley, Kiewe, Klessen, Kruijssen, Kudritzki, Larson, Law, Leloudas, Lennarz, Li, Li, Li, Lotz, Maund, Maund, Maíz-Apellániz, Meurer, Meynet, Meynet, Meynet, Mihos, Mihos, Milone, Minkowski, Miralles-Caballero, Modjaz, Mokiem, Muller, Neff, P. A. James, Pastorello, Perets, Petrosian, Pettini, Podsiadlowski, Puls, Pèrez-Torres, Rampazzo, Rau, Rupke, S. M. Habergham, Sanders, Schmidt, Shaw, Smartt, Smartt, Smith, Sollima, Sollima, Sollima, Thöne, Tsvetkov, van den Bergh, van den Bergh, Van Dyk, Van Dyk, Van Dyk, Veilleux, Yoon, Zamojski   +105 more
core   +1 more source

WHY NS AND BH MASS DISTRIBUTION IS BIMODAL?

Odessa Astronomical Publications, 2017
The observed mass distribution for the compact remnants of massive stars (neutron stars and black holes) and its relationship to possible mechanisms for the ejection of the envelopes of type II and Ib/c supernovae is analyzed.
M. E. Prokhorov, K. A. Postnov
doaj   +1 more source

Constraints from $^{26}$Al Measurements on the Galaxy's Recent Global Star Formation Rate and Core Collapse Supernovae Rate [PDF]

, 1997
Gamma-rays from the decay of $^{26}$Al offer a stringent constraint on the Galaxy's global star formation rate over the past million years, supplementing other methods for quantifying the recent Galactic star formation rate, such as equivalent widths of ...
Cappellaro E., Diehl R., Diehl R., Elmgreen B. G., Elmgreen B. G., Gallagher J. S., Hunter D. A., Kennicut R. C., Lequeux J., Reid N., Scalo J. M., Smith L. F., Tinsley B. M., van den Bergh S.   +13 more
core   +2 more sources

Inhomogeneities and the modeling of radio supernovae

, 2017
Observations of radio supernovae often exhibit characteristics not readily accounted for by a homogeneous, spherically symmetric synchrotron model; e.g., flat-topped spectra/lightcurves.
Bjornsson, Claes-I., Keshavarzi, Said T.
core   +1 more source

Helium Emission in the Type Ic SN 1999cq [PDF]

, 2000
We present the first unambiguous detection of helium emission lines in spectra of Type Ic supernovae (SNe Ic). The presence of He I lines, with full width at half maximum ~ 2000 km/s, and the distinct absence of any other intermediate-width emission (e.g.
Alexei V. Filippenko, Almog Y., Barbon R., Baron E., Branch D., Chugai N. N., Chugai N. N., Douglas C. Leonard, Gouiffes C., Munari U., Ryan Chornock, Stathakis R. A., Thomas Matheson, Turatto M., Uomoto A., van den Bergh S., Weidong Li, Yamaoka H., Zwicky F.   +18 more
core   +3 more sources

SN 2014C: A Metamorphic Supernova Exploded in the Intricate and Hydrogen-rich Surroundings

The Astrophysical Journal
We present photometric and spectroscopic observations of supernova (SN) SN 2014C, primarily emphasizing the initial month after the explosion at approximately daily intervals.
Qian Zhai, Jujia Zhang, Weili Lin, Paolo Mazzali, Elena Pian, Stefano Benetti, Lina Tomasella, Jialian Liu, Liping Li   +8 more
doaj   +1 more source

Stellar Properties of Observed Stars Stripped in Binaries in the Magellanic Clouds

The Astrophysical Journal, 2023
Massive stars (∼8–25 M _⊙ ) stripped of their hydrogen-rich envelopes via binary interaction are thought to be the main progenitors for merging neutron stars and stripped-envelope supernovae.
Y. Götberg, M. R. Drout, A. P. Ji, J. H. Groh, B. A. Ludwig, P. A. Crowther, N. Smith, A. de Koter, S. E. de Mink   +8 more
doaj   +1 more source

On the multiple supernova population of Arp 299: constraints on progenitor properties and host galaxy star formation characteristics

, 2011
Throughout the last 20 years 7 supernovae (SNe) have been discovered within Arp 299. One of these is unclassified, leaving 6 core-collapse events; 2 type II, 2 type Ib, a type IIb and one object of indistinct type; Ib/IIb. We analyse the relative numbers
Alonso-Herrero, Alonso-Herrero, Anderson, Anderson, Anderson, Arcavi, Barbon, Bartunov, Boissier, Bresolin, Calzetti, Crockett, Eldridge, Elias-Rosa, Filippenko, Filippenko, Filippenko, Fraser, Fruchter, García-Marín, Gaskell, Gehrz, Georgy, Habergham, Hakobyan, Heger, Huang, J. P. Anderson, James, Jha, Kelly, Kewley, Klessen, Leloudas, Leonard, Li, Li, Mattila, Mattila, Mattila, Maund, Meynet, Modjaz, Modjaz, Neff, Nelemans, Newton, P. A. James, Pettini, Prieto, Pérez-Torres, Qiu, Richardson, Richardson, Rieke, Ryder, Ryder, S. M. Habergham, Salpeter, Sanders, Skrutskie, Smartt, Smartt, Treffers, Tsvetkov, Tsvetkov, Ulvestad, van Buren, van den, Weedman   +69 more
core   +1 more source