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
On the Origin of Switchbacks Observed in the Solar Wind
F. S. Mozer
; S. D. Bale; J. W. Bonnell; J. F. Drake; E. L. M. Hanson; M. C. Mozer
<jats:title>Abstract</jats:title> <jats:p>The origin of switchbacks in the solar wind is discussed in two classes of theory that differ in the location of the source being either near the transition region near the Sun or in the solar wind itself. The two classes of theory differ in their predictions of the switchback rate (the number of switchbacks observed per hour) as a function of distance from the Sun. To distinguish between these theories, one-hour averages of Parker Solar Probe data were averaged over five orbits to find the following: (1) The hourly averaged switchback rate was independent of distance from the Sun. (2) The average switchback rate increased with solar wind speed. (3) The switchback size perpendicular to the flow increased as <jats:italic>R</jats:italic>, the distance from the Sun, while the radial size increased as <jats:italic>R</jats:italic> <jats:sup>2</jats:sup>, resulting in an increasing switchback aspect ratio with distance from the Sun. (4) The hourly averaged and maximum switchback rotation angles did not depend on the solar wind speed or distance from the Sun. These results are consistent with switchback formation in the transition region because their increase of tangential size with radius compensates for the radial falloff of their equatorial density to produce switchback rates that are independent of radial distance. This constant switchback rate is inconsistent with an in situ source. The switchback size and aspect ratio, but not their hourly average or maximum rotation angle, increased with radial distance to 100 solar radii. Additionally, quiet intervals between switchback patches occurred at the lowest solar wind speeds.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 60
Dissecting the Strong-lensing Galaxy Cluster MS 0440.5+0204. II. New Optical Spectroscopic Observations in a Wider Area and Cluster Dynamical State
Eleazar R. Carrasco; Tomás Verdugo; Verónica Motta; Gael Foëx; E. Ellingson; Percy L. Gomez; Emilio Falco; Marceau Limousin
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 61
Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XIV. A Candidate Type II Quasar at z = 6.1292
Masafusa Onoue; Yoshiki Matsuoka; Nobunari Kashikawa; Michael A. Strauss; Kazushi Iwasawa; Takuma Izumi; Tohru Nagao; Naoko Asami; Seiji Fujimoto; Yuichi Harikane; Takuya Hashimoto; Masatoshi Imanishi; Chien-Hsiu Lee; Takatoshi Shibuya; Yoshiki Toba
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 61
Evolution of Large-amplitude Alfvén Waves and Generation of Switchbacks in the Expanding Solar Wind
Alfred Mallet; Jonathan Squire; Benjamin D. G. Chandran; Trevor Bowen; Stuart D. Bale
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 62
Orientation and Accretion in a Representative Sample of Active Galactic Nuclei
Jessie C. Runnoe; Todd Boroson
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 62
Fast-transient Searches in Real Time with ZTFReST: Identification of Three Optically Discovered Gamma-Ray Burst Afterglows and New Constraints on the Kilonova Rate
Igor Andreoni; Michael W. Coughlin; Erik C. Kool; Mansi M. Kasliwal; Harsh Kumar; Varun Bhalerao; Ana Sagués Carracedo; Anna Y. Q. Ho; Peter T. H. Pang; Divita Saraogi; Kritti Sharma; Vedant Shenoy; Eric Burns; Tomás Ahumada; Shreya Anand; Leo P. Singer; Daniel A. Perley; Kishalay De; U. C. Fremling; Eric C. Bellm; Mattia Bulla; Arien Crellin-Quick; Tim Dietrich; Andrew Drake; Dmitry A. Duev; Ariel Goobar; Matthew J. Graham; David L. Kaplan; S. R. Kulkarni; Russ R. Laher; Ashish A. Mahabal; David L. Shupe; Jesper Sollerman; Richard Walters; Yuhan Yao
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 63
Radial Gradients in Dust-to-gas Ratio Lead to Preferred Region for Giant Planet Formation
Yayaati Chachan; Eve J. Lee; Heather A. Knutson
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 63
Statistical Study on Spatial Distribution and Polarization of Saturn Narrowband Emissions
Siyuan Wu; Shengyi Ye; Georg Fischer; Jian Wang; Minyi Long; John D. Menietti; Baptiste Cecconi; William S. Kurth
<jats:title>Abstract</jats:title> <jats:p>The spatial distribution and polarization of Saturn narrowband (NB) emissions have been studied by using Cassini Radio and Plasma Wave Sciences data and goniopolarimetric data obtained through an inversion algorithm with a preset source located at the center of Saturn. From 2004 January 1 to 2017 September 12, NB emissions were selected automatically by a computer program and rechecked manually. The spatial distribution shows a preference for high latitude and intensity peaks in the region within 6 Saturn radii (<jats:italic>R</jats:italic> <jats:sub> <jats:italic>s</jats:italic> </jats:sub>) for both 5 and 20 kHz NB emissions. 5 kHz NB emissions also show a local time preference roughly in the 18:00−22:00 sector. The Enceladus plasma torus makes it difficult for NB emissions to propagate to the low latitude regions outside the plasma torus. The extent of the low latitude regions where 5 and 20 kHz NB emissions were never observed is consistent with the corresponding plasma torus density contour in the meridional plane. 20 kHz NB emissions show a high circular polarization while 5 kHz NB emissions are less circularly polarized with <jats:inline-formula> <jats:tex-math> <?CDATA $\left|V\right|\lt 0.6$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mfenced close="∣" open="∣"> <mml:mrow> <mml:mi>V</mml:mi> </mml:mrow> </mml:mfenced> <mml:mo><</mml:mo> <mml:mn>0.6</mml:mn> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjac0af1ieqn1.gif" xlink:type="simple" /> </jats:inline-formula> for majority of the cases. And cases of 5 kHz NB emissions with high circular polarization are more frequently observed at high latitude especially at the northern and southern edges of the Enceladus plasma torus.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 64
Variability of Disk Emission in Pre-main Sequence and Related Stars. V. Occultation Events from the Innermost Disk Region of the Herbig Ae Star HD 163296
Monika Pikhartova; Zachary C. Long; Korash D. Assani; Rachel B. Fernandes; Ammar Bayyari; Michael L. Sitko; Carol A. Grady; John P. Wisniewski; Evan A. Rich; Arne A. Henden; William C. Danchi
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 64
Ionized Gas Outflows in Low-excitation Radio Galaxies Are Radiation Driven
M. Singha; C. P. O’Dea; Y. A. Gordon; C. Lawlor-Forsyth; S. A. Baum
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 65