Results 61 to 70 of about 35,066 (146)

Evidence of Gradients of Density and Magnetic Field in the Remnant of Tycho’s Supernova

The Astrophysical Journal
By using surface brightness maps of Tycho’s supernova remnant (SNR) in radio and X-rays, along with the properties of thermal and synchrotron emission, we have derived the postshock density and magnetic field (MF) strength distributions over the ...
Oleh Petruk, Taras Kuzyo, Mariana Patrii, Laura Chomiuk, Maria Arias, Marco Miceli, Salvatore Orlando, Fabrizio Bocchino   +7 more
doaj   +1 more source

Interstellar extinction and polarization -- A spheroidal dust grain approach perspective

, 2010
We extend and investigate the spheroidal model of interstellar dust grains used to simultaneously interpret the observed interstellar extinction and polarization curves.
Anderson, Bessell, Carnochan, Clayton, Corradi, Coyne, Cutri, Das, Davis, Davis, Dobashi, Draine, Draine, Draine, Draine, Draine, Ducati, Fitzpatrick, Genova, Goodman, Gordon, Greenberg, Greenberg, Gupta, H. K. Das, Hanson, Hildebrand, Hong, Iatì, Il'in, Jones, Kim, Kim, Krełowski, Laor, Larson, Lasue, Lazarian, Lee, Li, Li, Li, Li, Li, Mamajek, Martin, Martin, Martin, Mathis, Mathis, Mathis, Mermilliod, Min, Monet, Moreno, N. V. Voshchinnikov, North, Onaka, Penprase, Platais, Rogers, Rouleau, Serkowski, Skiff, Snow, Snow, Sofia, Stark, Straizys, V. B. Il'in, Vaidya, Valencic, Vallée, Vallée, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Wegner, Weingartner, Welsh, Whittet, Wilking, Wilking, Wolf, Zubko, Zubko   +89 more
core   +1 more source

Ph3PC – A Monosubstituted C(0) Atom in Its Triplet State

Angewandte Chemie International Edition, Volume 64, Issue 10, March 3, 2025.
In contrast to divalent C(0) compounds, such as carbodiphosphoranes, monovalent C(0) compounds are largely underrepresented in chemistry. Now the first monovalent C(0) compound, Ph3P→C, has been characterized, in which triphenylphosphine forms a bond to a carbon atom in its electronic 3P ground state.
Yury Kutin, Taichi Koike, Maria Drosou, Alexander Schnegg, Dimitrios A. Pantazis, Müge Kasanmascheff, Max M. Hansmann   +6 more
wiley   +1 more source

Slope of Magnetic Field–Density Relation as an Indicator of Magnetic Dominance

The Astrophysical Journal
The electromagnetic field is a fundamental force in nature that regulates the formation of stars in the Universe. Despite decades of efforts, a reliable assessment of the importance of the magnetic fields in star formation relations remains missing.
Mengke Zhao, Guang-Xing Li, Keping Qiu
doaj   +1 more source

Magnetic Fields in Irregular Galaxies

, 2007
Magnetic fields are an important component of the interstellar medium, especially in low-mass galaxies like irregulars where the magnetic pressure may be significant. However, few irregular galaxies have observed magnetic field structures. Using the VLA,
Everett, John, Heiles, Carl, Kepley, Amanda A., Muehle, Stefanie, Robishaw, Timothy, Wilcots, Eric M., Zweibel, Ellen   +6 more
core   +1 more source

Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short‐Lived Radioactive Isotopes?

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT We run a three‐dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn (exclusively produced from type Ia supernovae, SNIa), 60Fe (exclusively produced from core‐collapse supernovae, CCSNe), 182Hf (exclusively produced from intermediate mass stars, IMSs), and 244Pu (exclusively produced from neutron star mergers ...
Benjamin Wehmeyer, Andrés Yagüe López, Benoit Côté, Maria K. Petö, Chiaki Kobayashi, Maria Lugaro   +5 more
wiley   +1 more source

Applying the Velocity Gradient Technique in NGC 1333: Comparison with Dust Polarization Observations

The Astrophysical Journal
Magnetic fields ( B -fields) are ubiquitous in the interstellar medium (ISM), and they play an essential role in the formation of molecular clouds and subsequent star formation.
Archana Soam, Ka Ho Yuen, Ian Stephens, Chi Yan Law, Ka Wai Ho, Simon Coudé   +5 more
doaj   +1 more source

Magnetic Fields in the Milky Way

, 2014
This chapter presents a review of observational studies to determine the magnetic field in the Milky Way, both in the disk and in the halo, focused on recent developments and on magnetic fields in the diffuse interstellar medium.
A. Boulares, A. Fletcher, A. Noutsos, A.G. Bruyn de, A.L. Lazaryan, A.R. Taylor, A.R. Taylor, A.W. Clegg, A.W. Strong, A.W. Strong, B. Ruiz-Granados, B.M. Gaensler, C. Heiles, C. Heiles, C.L. Eck Van, D. Mitra, D. Moss, D.H.F.M. Schnitzeler, D.H.F.M. Schnitzeler, D.H.F.M. Schnitzeler, D.P. Cox, E. Carretti, E. Carretti, E.G. Zweibel, E.M. Berkhuijsen, E.M. Bierman, G. Golup, G. Heald, G. Hinshaw, G.C. Gómez, H. Men, H. Ohno, H. Röttgering, J.A. Green, J.C. Brown, J.C. Brown, J.H. Simonetti, J.J. Condon, J.L. Han, J.L. Han, J.L. Han, J.L. Han, J.L. Han, J.M. Stil, J.P. Vallee, J.P. Vallée, J.P. Vallée, J.P. Vallée, K. Ferrière, K. Ferrière, K.M. Rae, K.T. Chyży, L. Fauvet, L. Fauvet, L. Page, L. Xiao, M. Haverkorn, M. Haverkorn, M. Haverkorn, M. Haverkorn, M. Haverkorn, M. Iacobelli, M. Simard-Normandin, M. Wolleben, M. Wolleben, M. Wolleben, M.-A. Miville-Deschênes, M.A. Brentjens, M.A. Malkov, M.D. Pavel, M.D. Pavel, M.S. Pshirkov, P. Frick, P.C. Frisch, P.P. Kronberg, R. Beck, R. Beck, R. Jansson, R. Jansson, R. Jansson, R. Stepanov, R.C. Thomson, R.J. Rand, R.M. Crutcher, R.N. Manchester, S. Johnston, S. Nishiyama, S.A. Mao, S.A. Mao, T. Nota, T. Oosterloo, T.A.T. Spoelstra, T.R. Jaffe, T.R. Jaffe, V.L. Fish, X.H. Sun, X.H. Sun, X.H. Sun, X.Y. Gao   +98 more
core   +1 more source

Dynamics of Energetic Heliospheric Ions in Pluto's Induced Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 130, Issue 2, February 2025.
Abstract We present a model of the interaction between energetic heliospheric ions and Pluto's induced magnetosphere. The electromagnetic fields near the dwarf planet are highly non‐uniform, displaying extended signatures of pile‐up and draping.
Randall T. Ruch, Sven Simon, C. Michael Haynes   +2 more
wiley   +1 more source

Galactic Magnetic Fields. I. Theoretical Model and Scaling Relations

The Astrophysical Journal
Galactic dynamo models have generally relied on input parameters that are very challenging to constrain. We address this problem by developing a model that uses observable quantities as input: the galaxy rotation curve, the surface densities of the gas ...
Luke Chamandy, Rion Glenn Nazareth, Gayathri Santhosh   +2 more
doaj   +1 more source