Results 51 to 60 of about 11,937,910 (228)

Rethinking microtidal systems: Tidal signatures in the fluvial deposits of the Po River, Italy

Sedimentology, EarlyView.
ABSTRACT In microtidally influenced rivers, tides are generally assumed to leave virtually no signatures in the sedimentary record. However, this hypothesis has been surprisingly poorly tested using modern river analogues, which provide an opportunity to assess whether sedimentary signatures of microtidal regimes can develop in rivers that lack ...
Anna E. van Yperen, Alvise Finotello, Riccardo Maitan, Ivar Midtkandal, Fabrizio Nestola, Davide Tognin, Massimiliano Ghinassi   +6 more
wiley   +1 more source

Long Plateau Doth So: How Internal Heating Sources Affect Hydrogen-rich Supernova Light Curves

The Astrophysical Journal
Some hydrogen-rich core-collapse supernovae (SNeIIP) exhibit evidence of a sustained energy source powering their light curves, resulting in a brighter and/or longer-lasting hydrogen recombination plateau phase.
Tatsuya Matsumoto, Brian D. Metzger, Jared A. Goldberg   +2 more
doaj   +1 more source

Supernovae and their host galaxies – II. The relative frequencies of supernovae types in spirals [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
We present an analysis of the relative frequencies of different supernova (SN) types in spirals with various morphologies and in barred or unbarred galaxies. We use a well-defined and homogeneous sample of spiral host galaxies of 692 SNe from the Sloan Digital Sky Survey in different stages of galaxy-galaxy interaction and activity classes of nucleus ...
Hakobyan, A. A., Nazaryan, T. A., Adibekyan, V. Zh., Petrosian, A. R., Aramyan, L. S., Kunth, D., Mamon, G. A., de Lapparent, V., Bertin, E., Gomes, J. M., Turatto, M.   +10 more
openaire   +3 more sources

VLBI observations of young Type II supernovae [PDF]

, 2020
. We give an overview of circumstellar interaction in young Type II supernovae, as seen through the eyes of verylong-baseline interferometry (VLBI) observations. The resolution attained by such observations ( < ∼ 1 mas) is a powerful tool to probe the
A Alberdi, J M Marcaide, Miguel A Pérez-Torres   +2 more
core  

Toward a cosmological Hubble diagram for Type II-P supernovae [PDF]

, 2006
We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based on five events at redshift up to z~0.3. This diagram was constructed using photometry from the Canada-France-Hawaii Telescope Supernova Legacy Survey and ...
Astier, Pierre, Fouchez, Dominique, Conley, A, Conley, Alex, Neill, James D., Astier, P., Sullivan, M., Fouchez, D., Carlberg, RG, Ellis, R, Fabbro, S., Pritchet, CJ, Pritchet, Chris J, Ellis, Richard, Pritchet, Chris J., Nugent, P., Perrett, Kathy, Carlberg, Raymond G, Conley, A., Leonard, DC, Regnault, N., Gal-Yam, Avishay, Carlberg, Raymond G., Pritchet, C. J., Howell, D. Andrew, Pain, Reynald, Howell, DA, Fabbro, Sebastien, Nugent, Peter, Perrett, K., Regnault, Nicolas, Leonard, D. C., Gal-Yam, A, Neill, JD, Sullivan, M, Perrett, K, Fabbro, S, Ellis, R., Pain, R, Howell, D Andrew, Astier, P, Sullivan, Mark, Leonard, Douglas C., Neill, James D, Regnault, N, Neill, J. D., Pain, R., Gal-Yam, A., Nugent, P, Fouchez, D, Carlberg, R. G., Howell, D. A., Carlberg, RaymondG., Leonard, Douglas C   +53 more
core   +1 more source

SN 2019tua: A Type IIb Supernova with Multiple Bumps in the Light Curves

The Astrophysical Journal
We present photometric and spectroscopic observations and analysis of the Type IIb supernova (SN) SN 2019tua, which exhibits multiple bumps in its declining light curves between 40 and 65 days after discovery.
Xin-Bo Huang, Xiang-Gao Wang, Long Li, Li-Ping Xin, Jing Wang, Tian-Ci Zheng, Qi Wang, Hui-Ya Liu, Zi-Min Zhou, Xiao-Meng Lu, Jian-Yan Wei, En-Wei Liang   +11 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

THE STANDARDIZED CANDLE METHOD FOR TYPE II PLATEAU SUPERNOVAE [PDF]

The Astrophysical Journal, 2010
In this paper we study the "standardized candle method" using a sample of 37 nearby (z<0.06) Type II plateau supernovae having BVRI photometry and optical spectroscopy. An analytic procedure is implemented to fit light curves, color curves, and velocity curves. We find that the V-I color toward the end of the plateau can be used to estimate the host-
Olivares, Felipe E., Hamuy, Mario, Pignata, Giuliano, Maza, José, Bersten, Melina, Phillips, Mark M., Suntzeff, Nicholas B., Filippenko, Alexei V., Morrel, Nidia I., Kirshner, Robert P., Matheson, Thomas   +10 more
openaire   +7 more sources

Neutrino treatment in multidimensional astrophysical simulations : a new spectral scheme [PDF]

, 2014
Neutrinos play a central role in modern physics and astrophysics. Their extremely weak interaction rate with baryons and other leptons makes their detection on the Earth difficult and challenging.
Perego, Albino
core   +1 more source

Late-time Optical and X-Ray Emission Evolution of the Oxygen-rich SN 1996cr

The Astrophysical Journal
When the ejecta of a supernova (SN) interact with the progenitor star's circumstellar environment, a strong shock is driven back into the ejecta, causing the material to become bright optically and in X-rays.
Daniel Patnaude, Kathryn E. Weil, Robert A. Fesen, Dan Milisavljevic, Ralph P. Kraft   +4 more
doaj   +1 more source