Catálogo de publicaciones - revistas
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
Cobertura temática
Tabla de contenidos
Kilonova Emission from Black Hole–Neutron Star Mergers. II. Luminosity Function and Implications for Target-of-opportunity Observations of Gravitational-wave Triggers and Blind Searches
Jin-Ping Zhu
; Shichao Wu
; Yuan-Pei Yang
; Bing Zhang
; He Gao
; Yun-Wei Yu
; Zhuo Li; Zhoujian Cao
; Liang-Duan Liu
; Yan Huang; Xing-Han Zhang
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 24
The Formation and Lifetime of Outflows in a Solar Active Region
David H. Brooks
; Louise Harra
; Stuart D. Bale
; Krzysztof Barczynski
; Cristina Mandrini
; Vanessa Polito
; Harry P. Warren
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 25
Resolving Complex Inner X-Ray Structure of the Gravitationally Lensed AGN MG B2016+112
Daniel Schwartz
; Cristiana Spingola
; Anna Barnacka
<jats:title>Abstract</jats:title> <jats:p>We use a Chandra X-ray observation of the gravitationally lensed system MG B2016+112 at <jats:italic>z</jats:italic> = 3.273 to elucidate the presence of at least two X-ray sources. We find that these sources are consistent with the very long baseline interferometry (VLBI) components measured by Spingola, which are separated by ∼200 pc. Their intrinsic 0.5–7 keV source frame luminosities are 1.5 × 10<jats:sup>43</jats:sup> and 1.8 × 10<jats:sup>44</jats:sup> erg s<jats:sup>−1</jats:sup>, respectively. Most likely this system contains a dual active galactic nucleus (AGN), but we are possibly detecting an AGN plus a parsec-scale X-ray jet, the latter lying in a region at very high magnification. The quadruply lensed X-ray source is within ±40 pc (1<jats:italic>σ</jats:italic>) of its VLBI counterpart. Using a gravitational lens as a telescope, and a novel statistical application, we have achieved unprecedented accuracy for measuring metric distances at such large redshifts in X-ray astronomy. This is tens of mas if the source is located close to the caustics, while it is of hundreds of mas if the source is in a region at lower amplification. The present demonstration of this approach has implications for future X-ray investigations of large numbers of lensed systems.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 26
Measuring the Magnetic Origins of Solar Flares, Coronal Mass Ejections, and Space Weather
Philip Judge
; Matthias Rempel
; Rana Ezzeddine; Lucia Kleint
; Ricky Egeland
; Svetlana V. Berdyugina; Thomas Berger
; Paul Bryans
; Joan Burkepile
; Rebecca Centeno
; Giuliana de Toma
; Mausumi Dikpati
; Yuhong Fan
; Holly Gilbert; Daniela A. Lacatus
<jats:title>Abstract</jats:title> <jats:p>We take a broad look at the problem of identifying the magnetic solar causes of space weather. With the lackluster performance of extrapolations based upon magnetic field measurements in the photosphere, we identify a region in the near-UV (NUV) part of the spectrum as optimal for studying the development of magnetic free energy over active regions. Using data from SORCE, the Hubble Space Telescope, and SKYLAB, along with 1D computations of the NUV spectrum and numerical experiments based on the MURaM radiation–magnetohydrodynamic and HanleRT radiative transfer codes, we address multiple challenges. These challenges are best met through a combination of NUV lines of bright Mg <jats:sc>ii</jats:sc>, and lines of Fe <jats:sc>ii</jats:sc> and Fe <jats:sc>i</jats:sc> (mostly within the 4<jats:italic>s</jats:italic>–4<jats:italic>p</jats:italic> transition array) which form in the chromosphere up to 2 × 10<jats:sup>4</jats:sup> K. Both Hanle and Zeeman effects can in principle be used to derive vector magnetic fields. However, for any given spectral line the <jats:italic>τ</jats:italic> = 1 surfaces are generally geometrically corrugated owing to fine structure such as fibrils and spicules. By using multiple spectral lines spanning different optical depths, magnetic fields across nearly horizontal surfaces can be inferred in regions of low plasma <jats:italic>β</jats:italic>, from which free energies, magnetic topology, and other quantities can be derived. Based upon the recently reported successful sub-orbital space measurements of magnetic fields with the CLASP2 instrument, we argue that a modest space-borne telescope will be able to make significant advances in the attempts to predict solar eruptions. Difficulties associated with blended lines are shown to be minor in an Appendix.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 27
White Dwarf Subsystems in Core-Collapsed Globular Clusters
Kyle Kremer
; Nicholas Z. Rui
; Newlin C. Weatherford
; Sourav Chatterjee
; Giacomo Fragione
; Frederic A. Rasio
; Carl L. Rodriguez
; Claire S. Ye
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 28
Hydrodynamics of Small Transient Brightenings in the Solar Corona
Abhishek Rajhans
; Durgesh Tripathi
; Vinay L. Kashyap
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 29
Signatures of Recent Cosmic-Ray Acceleration in the High-latitude Gamma-Ray Sky
Guđlaugur Jóhannesson
; Troy A. Porter
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 30
Tides in the High-eccentricity Migration of Hot Jupiters: Triggering Diffusive Growth by Nonlinear Mode Interactions
Hang Yu
; Nevin N. Weinberg
; Phil Arras
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 31
Pair Cascades at the Edge of the Broad-line Region Shaping the Gamma-Ray Spectrum of 3C 279
Christoph Wendel
; Amit Shukla
; Karl Mannheim
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 32