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Título de Acceso Abierto

The Astrophysical Journal (ApJ)

Resumen/Descripción – provisto por la editorial en inglés
The Astrophysical Journal is an open access journal devoted to recent developments, discoveries, and theories in astronomy and astrophysics. Publications in ApJ constitute significant new research that is directly relevant to astrophysical applications, whether based on observational results or on theoretical insights or modeling.
Palabras clave – provistas por la editorial

astronomy; astrophysics

Disponibilidad
Institución detectada Período Navegá Descargá Solicitá
No detectada desde jul. 1995 / hasta dic. 2023 IOPScience

Información

Tipo de recurso:

revistas

ISSN impreso

0004-637X

ISSN electrónico

1538-4357

Editor responsable

American Astronomical Society (AAS)

Idiomas de la publicación

  • inglés

País de edición

Reino Unido

Información sobre licencias CC

Creative Commons Atribución No comercial No obras derivadas Compartir igual

https://creativecommons.org/licenses/by/4.0/

Cobertura temática

Tabla de contenidos

State of the Field: Binary Black Hole Natal Kicks and Prospects for Isolated Field Formation after GWTC-2

Thomas A. CallisterORCID; Will M. FarrORCID; Mathieu RenzoORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 157

Electromagnetic Proton Beam Instabilities in the Inner Heliosphere: Energy Transfer Rate, Radial Distribution, and Effective Excitation

Wen LiuORCID; Jinsong ZhaoORCID; Huasheng XieORCID; Yuhang YaoORCID; Dejin WuORCID; L. C. LeeORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 158

Early Universe Physics Insensitive and Uncalibrated Cosmic Standards: Constraints on Ωm and Implications for the Hubble Tension

Weikang LinORCID; Xingang ChenORCID; Katherine J. MackORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 159

Erratum: “The Baryonic Collapse Efficiency of Galaxy Groups in the RESOLVE and ECO surveys” (2017, ApJ, 849, 20)

Kathleen D. EckertORCID; Sheila J. KannappanORCID; Claudia del P. Lagos; Ashley D. BakerORCID; Andreas A. BerlindORCID; David V. StarkORCID; Amanda J. Moffett; Zachary Nasipak; Mark A. Norris

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 160

Erratum: “Polarization Structure of Filamentary Clouds” (2015, ApJ, 807, 47)

Kohji TomisakaORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 161

Erratum: “Nonlinear Damping of Standing Kink Waves Computed With Elsässer Variables” (2021, ApJ, 910, 58)

Tom Van DoorsselaereORCID; Marcel GoossensORCID; Norbert MagyarORCID; Michael S. RudermanORCID; Rajab Ismayilli

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 162

Steep Cosmic-Ray Spectra with Revised Diffusive Shock Acceleration

Rebecca DiesingORCID; Damiano CaprioliORCID

<jats:title>Abstract</jats:title> <jats:p>Galactic cosmic rays (CRs) are accelerated at the forward shocks of supernova remnants (SNRs) via diffusive shock acceleration (DSA), an efficient acceleration mechanism that predicts power-law energy distributions of CRs. However, observations of nonthermal SNR emission imply CR energy distributions that are generally steeper than <jats:italic>E</jats:italic> <jats:sup>−2</jats:sup>, the standard DSA prediction. Recent results from kinetic hybrid simulations suggest that such steep spectra may arise from the drift of magnetic structures with respect to the thermal plasma downstream of the shock. Using a semi-analytic model of nonlinear DSA, we investigate the implications that these results have on the phenomenology of a wide range of SNRs. By accounting for the motion of magnetic structures in the downstream, we produce CR energy distributions that are substantially steeper than <jats:italic>E</jats:italic> <jats:sup>−2</jats:sup> and consistent with observations. Our formalism reproduces both modestly steep spectra of Galactic SNRs (∝<jats:italic>E</jats:italic> <jats:sup>−2.2</jats:sup>) and the very steep spectra of young radio supernovae (∝<jats:italic>E</jats:italic> <jats:sup>−3</jats:sup>).</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 1

Effects of Magnetic Fields in Hot White Dwarfs

J. Peterson; V. DexheimerORCID; R. Negreiros; B. G. Castanheira

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 1

EPIC 228782059: Asteroseismology of What Could Be the Coolest Pulsating Helium-atmosphere White Dwarf (DBV) Known

R. M. Duan; W. ZongORCID; J.-N. FuORCID; Y. H. ChenORCID; J. J. HermesORCID; Zachary P. VanderboschORCID; X. Y. Ma; S. CharpinetORCID

<jats:title>Abstract</jats:title> <jats:p>We present analysis of a new pulsating helium-atmosphere (DB) white dwarf, EPIC 228782059, discovered from 55.1 days of K2 photometry. The long-duration, high-quality light curves reveal 11 independent dipole and quadruple modes, from which we derive a rotational period of 34.1 ± 0.4 hr for the star. An optimal model is obtained from a series of grids constructed using the White Dwarf Evolution Code, which returns <jats:italic>M</jats:italic> <jats:sub>*</jats:sub> = 0.685 ± 0.003<jats:italic>M</jats:italic> <jats:sub>⊙</jats:sub>, <jats:italic>T</jats:italic> <jats:sub>eff</jats:sub> = 21,910 ± 23 K, and <jats:inline-formula> <jats:tex-math> <?CDATA $\mathrm{log}g=8.14\pm 0.01$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>log</mml:mi> <mml:mi>g</mml:mi> <mml:mo>=</mml:mo> <mml:mn>8.14</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.01</mml:mn> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjac22fdieqn1.gif" xlink:type="simple" /> </jats:inline-formula> dex. These values are comparable to those derived from spectroscopy by Koester &amp; Kepler (20,860 ± 160 K, and 7.94 ± 0.03 dex). If these values are confirmed or better constrained by other independent works, it would make EPIC 228782059 one of the coolest pulsating DB white dwarf stars known, and would be helpful for testing different physical treatments of convection, and to further investigate the theoretical instability strip of DB white dwarf stars.</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 2

Gamma-Ray Burst in a Binary System

Ze-Cheng ZouORCID; Bin-Bin ZhangORCID; Yong-Feng HuangORCID; Xiao-Hong ZhaoORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 2