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
Detection of Small Flares from the Crab Nebula with Fermi-LAT
Masanori Arakawa
; Masaaki Hayashida; Dmitry Khangulyan; Yasunobu Uchiyama
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 33
Delay-time Distributions of Solar Energetic Particles. II. Effects of Magnetic Focusing
N. H. Bian; A. Gordon Emslie
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 34
HD 62542: Probing the Bare, Dense Core of a Translucent Interstellar Cloud
Daniel E. Welty; Paule Sonnentrucker; Theodore P. Snow; Donald G. York
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 36
Critical Balance and the Physics of Magnetohydrodynamic Turbulence
S. Oughton; W. H. Matthaeus
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 37
Sensitivity Kernels for Inferring Lorentz Stresses from Normal-mode Frequency Splittings in the Sun
Srijan Bharati Das; Tuneer Chakraborty; Shravan M. Hanasoge; Jeroen Tromp
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 38
A Blueprint for the Milky Way’s Stellar Populations: The Power of Large Photometric and Astrometric Surveys
Deokkeun An; Timothy C. Beers
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 39
Constraining the Dimensionality of SN Ia Spectral Variation with Twins
David Rubin
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 40
The Lyman Continuum Escape Fraction of Galaxies and AGN in the GOODS Fields
Brent M. Smith; Rogier A. Windhorst; Seth H. Cohen; Anton M. Koekemoer; Rolf A. Jansen; Cameron White; Sanchayeeta Borthakur; Nimish Hathi; Linhua Jiang; Michael Rutkowski; Russell E. Ryan; Akio K. Inoue; Robert W. O’Connell; John W. MacKenty; Christopher J. Conselice; Joseph I. Silk
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 41
Evidence for Resonance Scattering in the X-Ray Grating Spectrum of the Supernova Remnant N49
Yuki Amano; Hiroyuki Uchida; Takaaki Tanaka; Liyi Gu; Takeshi Go Tsuru
<jats:title>Abstract</jats:title> <jats:p>Resonance scattering (RS) is an important process in astronomical objects, because it affects measurements of elemental abundances and distorts surface brightness of the object. It is predicted that RS can occur in plasmas of supernova remnants (SNRs). Although several authors reported hints of RS in SNRs, no strong observational evidence has been established so far. We perform a high-resolution X-ray spectroscopy of the SNR N49 with the Reflection Grating Spectrometer on board XMM-Newton. The Reflection Grating Spectrometer spectrum of N49 shows a high G-ratio of O <jats:sc>vii</jats:sc> He<jats:italic>α</jats:italic> lines as well as O <jats:sc>viii</jats:sc> Ly<jats:italic>β</jats:italic>/<jats:italic>α</jats:italic> and Fe <jats:sc>xvii</jats:sc> (3<jats:italic>s</jats:italic>–2<jats:italic>p</jats:italic>)/(3<jats:italic>d</jats:italic>–2<jats:italic>p</jats:italic>) ratios, which cannot be explained by the emission from a thin thermal plasma. These line ratios can be well explained by the effect of RS. Our result implies that RS has a large impact particularly on a measurement of the oxygen abundance.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 12
On the Granulation and Irregular Variation of Red Supergiants
Yi Ren; Bi-Wei Jiang
<jats:title>Abstract</jats:title> <jats:p>The mechanisms and characteristics of the irregular variations of red supergiants (RSGs) are studied based on the RSG samples in the Small Magellanic Cloud (SMC), Large Magellanic Cloud (LMC), and M31. With the time-series data from the All-Sky Automated Survey for SuperNovae and Intermediate Palomar Transient Factory survey, we use the continuous time autoregressive moving average model to estimate the variability features of the light curves and their power spectral density (PSD). The characteristic evolution timescale and amplitude of granulations are further derived from fitting the posterior PSD with the COR function, which is a Harvey-like granulation model. The consistency of theoretical predictions and results is checked to verify the correctness of the assumption that granulations on RSGs contribute to irregular variation. The relations between granulation and stellar parameters are obtained and compared with the results of red giant branch (RGB) stars and Betelgeuse. It is found that the relations are in agreement with predictions from basic physical process of granulation and fall close to the extrapolated relations of RGB stars. The granulations in most of the RSGs evolve at a timescale of several days to a year with a characteristic amplitude of 10–1000 mmag. The results imply that the irregular variations of RSGs can be attributed to the evolution of granulations. When comparing the results from the SMC, LMC, and M31, the timescale and amplitude of granulation seem to increase with metallicity. The analytical relations of the granulation parameters with stellar parameters are derived for the RSG sample of each galaxy.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 24