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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
Constraining the Jet Launching Time of GRB 170817A by Utilizing the Baryon Loading
Jia Ren
; Da-Bin Lin; Lu-Lu Zhang; Kai Wang; Xiao-Yan Li; Xiang-Gao Wang; En-Wei Liang
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L26
Physical Conditions and Particle Acceleration in the Kiloparsec Jet of Centaurus A
Takahiro Sudoh; Dmitry Khangulyan; Yoshiyuki Inoue
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L27
Revealing the Formation of the Milky Way Nuclear Star Cluster via Chemo-dynamical Modeling
Tuan Do; Gregory David Martinez; Wolfgang Kerzendorf; Anja Feldmeier-Krause; Manuel Arca Sedda; Nadine Neumayer; Alessia Gualandris
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L28
On the Origin of a Rotating Metal-poor Stellar Population in the Milky Way Nuclear Cluster
Manuel Arca Sedda; Alessia Gualandris; Tuan Do; Anja Feldmeier-Krause; Nadine Neumayer; Denis Erkal
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L29
The Archetypal Ultra-diffuse Galaxy, Dragonfly 44, Is not a Dark Milky Way
Ákos Bogdán
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L30
Atmospheric Erosion by Giant Impacts onto Terrestrial Planets: A Scaling Law for any Speed, Angle, Mass, and Density
J. A. Kegerreis; V. R. Eke; D. C. Catling; R. J. Massey; L. F. A. Teodoro; K. J. Zahnle
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L31
Do All Interplanetary Coronal Mass Ejections Have a Magnetic Flux Rope Structure Near 1 au?
H. Q. Song; J. Zhang; X. Cheng; G. Li; Q. Hu; L. P. Li; S. J. Chen; R. S. Zheng; Y. Chen
<jats:title>Abstract</jats:title> <jats:p>Interplanetary coronal mass ejections (ICMEs) often consist of a shock wave, sheath region, and ejecta region. The ejecta regions are divided into two broad classes: magnetic clouds (MCs) that exhibit the characteristics of magnetic flux ropes, and non-magnetic clouds (NMCs) that do not. As CMEs result from eruption of magnetic flux ropes, it is important to answer why NMCs do not have the flux rope features. One claims that NMCs lose their original flux rope features due to the interactions between ICMEs or ICMEs and other large-scale structures during their transit in the heliosphere. The other attributes this phenomenon to the geometric selection effect; i.e., when an ICME has its nose (flank, including leg and non-leg flanks) pass through the observing spacecraft, the MC (NMC) features will be detected along the spacecraft trajectory within the ejecta. In this Letter, we examine which explanation is more reasonable through the geometric properties of ICMEs. If the selection effect leads to different ejecta types, MCs should have narrower sheath region compared to NMCs from the statistical point of view, which is confirmed by our statistics. In addition, we find that NMCs have similar sizes in solar cycles 23 and 24, and NMCs are smaller than MCs in cycle 23 but larger than MCs in cycle 24. This suggests that most NMCs have their leg flank pass through the spacecraft. Our geometric analyses support that all ICMEs should have a magnetic flux rope structure near 1 au.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L21
On the Maximum Stellar Rotation to form a Black Hole without an Accompanying Luminous Transient
Ariadna Murguia-Berthier; Aldo Batta; Agnieszka Janiuk; Enrico Ramirez-Ruiz; Ilya Mandel; Scott C. Noble; Rosa Wallace Everson
<jats:title>Abstract</jats:title> <jats:p>The collapse of a massive star with low angular momentum content is commonly thought to result in the formation of a black hole without an accompanying bright transient. Our goal in this Letter is to understand the flow in and around a newly formed black hole, involving accretion and rotation, via general relativistic hydrodynamics simulations aimed at studying the conditions under which infalling material can accrete without forming a centrifugally supported structure and, as a result, generate no effective feedback. On the other hand, if the feedback from the black hole is significant, the collapse would be halted and we suggest that the event is likely to be followed by a bright transient. We find that feedback is only efficient if the specific angular momentum of the infalling material at the innermost stable circular orbit exceeds that of geodesic circular flow at that radius by at least ≈20%. We use the results of our simulations to constrain the maximal stellar rotation rates of the disappearing massive progenitors PHL293B-LBV and N6946-BH1, and to provide an estimate of the overall rate of disappearing massive stars. We find that about a few percent of single O-type stars with measured rotational velocities are expected to spin below the critical value before collapse and are thus predicted to vanish without a trace.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L24
An Upper Limit on the Spin of SgrA* Based on Stellar Orbits in Its Vicinity
Giacomo Fragione; Abraham Loeb
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L32
The Phase-curve Signature of Condensible Water-rich Atmospheres on Slowly Rotating Tidally Locked Exoplanets
Feng Ding; Raymond T. Pierrehumbert
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. L33