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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

Creative Commons Atribución No comercial No obras derivadas Compartir igual

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

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 ZhuORCID; Shichao WuORCID; Yuan-Pei YangORCID; Bing ZhangORCID; He GaoORCID; Yun-Wei YuORCID; Zhuo Li; Zhoujian CaoORCID; Liang-Duan LiuORCID; 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. BrooksORCID; Louise HarraORCID; Stuart D. BaleORCID; Krzysztof BarczynskiORCID; Cristina MandriniORCID; Vanessa PolitoORCID; Harry P. WarrenORCID

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 SchwartzORCID; Cristiana SpingolaORCID; Anna BarnackaORCID

<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 JudgeORCID; Matthias RempelORCID; Rana Ezzeddine; Lucia KleintORCID; Ricky EgelandORCID; Svetlana V. Berdyugina; Thomas BergerORCID; Paul BryansORCID; Joan BurkepileORCID; Rebecca CentenoORCID; Giuliana de TomaORCID; Mausumi DikpatiORCID; Yuhong FanORCID; Holly Gilbert; Daniela A. LacatusORCID

<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 KremerORCID; Nicholas Z. RuiORCID; Newlin C. WeatherfordORCID; Sourav ChatterjeeORCID; Giacomo FragioneORCID; Frederic A. RasioORCID; Carl L. RodriguezORCID; Claire S. YeORCID

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

Pp. 28

Hydrodynamics of Small Transient Brightenings in the Solar Corona

Abhishek RajhansORCID; Durgesh TripathiORCID; Vinay L. KashyapORCID

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 JóhannessonORCID; Troy A. PorterORCID

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 YuORCID; Nevin N. WeinbergORCID; Phil ArrasORCID

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 WendelORCID; Amit ShuklaORCID; Karl Mannheim

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

Pp. 32

A Flexible Gaussian Process Reconstruction Method and the Mass Function of the Coalescing Binary Black Hole Systems

Yin-Jie LiORCID; Yuan-Zhu WangORCID; Ming-Zhe HanORCID; Shao-Peng TangORCID; Qiang YuanORCID; Yi-Zhong FanORCID; Da-Ming WeiORCID

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

Pp. 33