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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

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

Cobertura temática

Tabla de contenidos

Numerical Study of Two Injection Methods for the 2007 November 15 Coronal Mass Ejection in the Inner Heliosphere

Man ZhangORCID; Xueshang FengORCID; Fang ShenORCID; Liping YangORCID

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

Pp. 35

Dynamo Model for North–South Asymmetry of Solar Activity

Leonid KitchatinovORCID; Anna KhlystovaORCID

<jats:title>Abstract</jats:title> <jats:p>Observations reveal a relatively small but statistically significant north–south (NS) asymmetry in sunspot activity varying on a timescale of several solar cycles. This paper proposes a dynamo model for the phenomenon of long-term NS asymmetry. The model separates dynamo equations for magnetic fields of dipolar and quadrupolar equatorial parity. The NS asymmetry results from the superposition of dipolar and quadrupolar fields. Model computations confirm the formerly proposed excitation of the quadrupolar dynamo mode by a dominant dipolar mode mediated by the equator-symmetric fluctuations in the <jats:italic>α</jats:italic>-effect as a mechanism for the long-term NS asymmetry. An analytically solvable example of oscillations excited by short-term random forcing is given to justify the numerical result of NS asymmetry coherent on a timescale of several (about six in the present model) solar cycles resulting from random variations in the <jats:italic>α</jats:italic>-effect on a timescale of one solar rotation. The model computations show the phase-locking phenomenon of dipolar and quadrupolar fields oscillating predominantly in phase (northern type asymmetry) or in antiphase (southern type asymmetry) with relatively short irregular transitions between these two states. Large asymmetry in the simulated Grand minima is found and explained by weak magnetic quenching of the <jats:italic>α</jats:italic>-effect during the minima. The possibility of polar field asymmetry in activity minima as a precursor of sunspot asymmetry in the following activity cycles is discussed based on the dynamo model and observations.</jats:p>

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

Pp. 36

Associated Molecular and Atomic Clouds with X-Ray Shell of Superbubble 30 Doradus C in the LMC

Y. YamaneORCID; H. SanoORCID; M. D. FilipovićORCID; K. TokudaORCID; K. Fujii; Y. Babazaki; I. Mitsuishi; T. Inoue; F. AharonianORCID; T. Inaba; S. InutsukaORCID; N. MaxtedORCID; N. Mizuno; T. OnishiORCID; G. RowellORCID; K. TsugeORCID; F. Voisin; S. YoshiikeORCID; T. Fukuda; A. KawamuraORCID; A. BambaORCID; K. TachiharaORCID; Y. FukuiORCID

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

Pp. 36

How Temporal Symmetry Defines Morphology in BATSE Gamma-Ray Burst Pulse Light Curves

Jon Hakkila

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

Pp. 37

A New Low-beta Regime for Unstable Proton Firehose Modes in Bi-kappa-distributed Plasmas

S. M. ShaabanORCID; M. LazarORCID; R. F. Wimmer-SchweingruberORCID; H. FichtnerORCID

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

Pp. 37

Gravitational Lensing Formalism in a Curved Arc Basis: A Continuous Description of Observables and Degeneracies from the Weak to the Strong Lensing Regime

Simon BirrerORCID

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

Pp. 38

Small-scale Turbulent Motion of the Plasma in a Solar Filament as the Precursor of Eruption

Daikichi SekiORCID; Kenichi OtsujiORCID; Hiroaki IsobeORCID; Giulio Del ZannaORCID; Takako T. Ishii; Takahito SakaueORCID; Kiyoshi IchimotoORCID; Kazunari Shibata

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

Pp. 38

Data-constrained Magnetohydrodynamic Simulation of a Long-duration Eruptive Flare

Yang GuoORCID; Ze ZhongORCID; M. D. DingORCID; P. F. ChenORCID; Chun XiaORCID; Rony KeppensORCID

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

Pp. 39

HAWC+/SOFIA Polarimetry in L1688: Relative Orientation of Magnetic Field and Elongated Cloud Structure

Dennis LeeORCID; Marc Berthoud; Che-Yu ChenORCID; Erin G. CoxORCID; Jacqueline A. Davidson; Frankie J. EncaladaORCID; Laura M. Fissel; Rachel HarrisonORCID; Woojin KwonORCID; Di LiORCID; Zhi-Yun LiORCID; Leslie W. LooneyORCID; Giles NovakORCID; Sarah Sadavoy; Fabio P. SantosORCID; Dominique Segura-CoxORCID; Ian StephensORCID

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

Pp. 39

The Highly Self-absorbed Blazar PKS 1351-018

Brian PunslyORCID; Sándor FreyORCID; Cormac Reynolds; Paola MarzianiORCID; Alexander PushkarevORCID; Sina Chen; Shang Li; Preeti KharbORCID

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

Pp. 40