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Título de Acceso Abierto
The Astrophysical Journal Letters (ApJL)
Resumen/Descripción – provisto por la editorial en inglés
The Astrophysical Journal Letters is an open access express scientific journal that allows astrophysicists to rapidly publish short notices of significant original research. ApJL articles are timely, high-impact, and broadly understandable.Palabras clave – provistas por la editorial
astronomy; astrophysics
Disponibilidad
| Institución detectada | Período | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No detectada | desde ene. 2010 / hasta dic. 2023 | IOPScience |
Información
Tipo de recurso:
revistas
ISSN impreso
2041-8205
ISSN electrónico
2041-8213
Editor responsable
American Astronomical Society (AAS)
Idiomas de la publicación
- inglés
País de edición
Reino Unido
Información sobre licencias CC
Cobertura temática
Tabla de contenidos
Very Slow Rotators from Tidally Synchronized Binaries
David Nesvorný
; David Vokrouhlický; William F. Bottke; Harold F. Levison; William M. Grundy
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L16
Observations of a Quasi-periodic Pulsation in the Coronal Loop and Microwave Flux during a Solar Preflare Phase
Dong Li; Ying Li; Lei Lu; Qingmin Zhang; Zongjun Ning; Sergey Anfinogentov
<jats:title>Abstract</jats:title> <jats:p>We report a quasi-periodic pulsation (QPP) event simultaneously detected from the spatial displacements of the coronal loop at both EUV images and microwave emission during the preflare phase of a C1.1 flare on 2016 March 23. Using the motion magnification technique, a low-amplitude transverse oscillation with the growing period is discovered in a diffuse coronal loop in Atmospheric Imaging Assembly (AIA) image sequences at wavelength of 171 Å, and the initial oscillation period is estimated to be ∼397 s with a slow growth rate of 0.045. At the same time, a QPP with growing periods from roughly 300 s to nearly 500 s is discovered in the microwave flux in the same active region. Based on the imaging observations measured at EUV wavelengths by the AIA and at microwave 17 GHz by Nobeyama Radioheliograph, the diffuse coronal loop and the microwave radiation source are found to be connected through a hot loop seen in AIA images at wavelength of 94 Å. The growing period of the QPP should be related to the modulation of LRC-circuit oscillating process in a current-carrying plasma loop. The existence of electric currents may imply the non-potentialities in the source region during the preflare phase.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L17
Formation of Macroscale Flux Transfer Events at Mercury
J. Zhong; Y. Wei; L. C. Lee; J. S. He; J. A. Slavin; Z. Y. Pu; H. Zhang; X. G. Wang; W. X. Wan
<jats:title>Abstract</jats:title> <jats:p>Flux transfer events (FTEs) are magnetic flux ropes that are produced via magnetic reconnection at the planetary magnetopause where the solar wind directly interacts with the magnetosphere. Previous observations show that FTEs with a duration of several seconds, corresponding to a spatial scale of ∼0.5–1 <jats:italic>R</jats:italic> <jats:sub>M</jats:sub>, can occur at Mercury. However, the formation of these macroscale FTEs at a small dimensional magnetopause with a radius of ∼1.5 <jats:italic>R</jats:italic> <jats:sub>M</jats:sub> remains unclear. Here, we report the observations of active magnetic reconnection events at Mercury’s magnetopause by the MESSENGER spacecraft. The reconnection process is dominated by the formation of a series of multi-scale FTEs. Ion-scale flux ropes, typically with durations of ∼1 s or less, may be produced by the tearing instability in the thin current sheet near the subsolar position. Moreover, the commonly observed macroscale FTEs consist of three to tens of successive small-scale FTEs. We propose that macroscale FTEs at Mercury are generated by the interaction and merging of multiple ion-scale flux ropes, probably through two or more steps. This is distinct from the formation of typical FTEs, mainly between a pair of X-lines, at Earth’s magnetopause. Thus, the formation and evolution of FTEs may differ among planetary magnetospheres with a vast range of scale sizes. We further conclude that Mercury’s magnetopause is a natural plasma laboratory to study flux rope dynamics and evolution for the upcoming Bepi-Colombo mission.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L18
The Changing-look Optical Wind of the Flaring X-Ray Transient Swift J1858.6-0814
T. Muñoz-Darias; M. Armas Padilla; F. Jiménez-Ibarra; G. Panizo-Espinar; J. Casares; D. Altamirano; D. J. K. Buisson; N. Castro Segura; V. A. Cúneo; N. Degenaar; F. A. Fogantini; C. Knigge; D. Mata Sánchez; M. Özbey Arabaci; J. Sánchez-Sierras; M. A. P. Torres; J. van den Eijnden; F. M. Vincentelli
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L19
Proton Synchrotron Gamma-Rays and the Energy Crisis in Blazars
Ioannis Liodakis; Maria Petropoulou
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L20
Constraining the Dense Matter Equation of State with Joint Analysis of NICER and LIGO/Virgo Measurements
G. Raaijmakers; S. K. Greif; T. E. Riley; T. Hinderer; K. Hebeler; A. Schwenk; A. L. Watts; S. Nissanke; S. Guillot; J. M. Lattimer; R. M. Ludlam
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L21
SOFIA-EXES Observations of Betelgeuse during the Great Dimming of 2019/2020
Graham M. Harper; Curtis N. DeWitt; Matthew J. Richter; Edward F. Guinan; Richard Wasatonic; Nils Ryde; Edward J. Montiel; Amanda J. Townsend
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L23
EAGLE and Illustris-TNG Predictions for Resolved eROSITA X-Ray Observations of the Circumgalactic Medium around Normal Galaxies
Benjamin D. Oppenheimer; Ákos Bogdán; Robert A. Crain; John A. ZuHone; William R. Forman; Joop Schaye; Nastasha A. Wijers; Jonathan J. Davies; Christine Jones; Ralph P. Kraft; Vittorio Ghirardini
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L24
In Situ Measurement of Curvature of Magnetic Field in Turbulent Space Plasmas: A Statistical Study
Riddhi Bandyopadhyay; Yan Yang; William H. Matthaeus; Alexandros Chasapis; Tulasi N. Parashar; Christopher T. Russell; Robert J. Strangeway; Roy B. Torbert; Barbara L. Giles; Daniel J. Gershman; Craig J. Pollock; Thomas E. Moore; James L. Burch
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L25
A Binary Comb Model for Periodic Fast Radio Bursts
Kunihito Ioka; Bing Zhang
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L26