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
The Multi-slit Approach to Coronal Spectroscopy with the Multi-slit Solar Explorer (MUSE)
Bart De Pontieu
; Juan Martínez-Sykora; Paola Testa; Amy R. Winebarger; Adrian Daw; Viggo Hansteen; Mark C. M. Cheung; Patrick Antolin
<jats:title>Abstract</jats:title> <jats:p>The Multi-slit Solar Explorer (MUSE) is a proposed mission aimed at understanding the physical mechanisms driving the heating of the solar corona and the eruptions that are at the foundation of space weather. MUSE contains two instruments, a multi-slit extreme ultraviolet (EUV) spectrograph and a context imager. It will simultaneously obtain EUV spectra (along 37 slits) and context images with the highest resolution in space (0.″33–0.″4) and time (1–4 s) ever achieved for the transition region (TR) and corona. The MUSE science investigation will exploit major advances in numerical modeling, and observe at the spatial and temporal scales on which competing models make testable and distinguishable predictions, thereby leading to a breakthrough in our understanding of coronal heating and the drivers of space weather. By obtaining spectra in four bright EUV lines (Fe <jats:sc>ix</jats:sc> 171 Å, Fe <jats:sc>xv</jats:sc> 284 Å, Fe <jats:sc>xix</jats:sc> 108Å, Fe <jats:sc>xxi</jats:sc> 108 Å) covering a wide range of TR and coronal temperatures along 37 slits simultaneously, MUSE will be able to “freeze” the evolution of the dynamic coronal plasma. We describe MUSE’s multi-slit approach and show that the optimization of the design minimizes the impact of spectral lines from neighboring slits, generally allowing line parameters to be accurately determined. We also describe a Spectral Disambiguation Code to resolve multi-slit ambiguity in locations where secondary lines are bright. We use simulations of the corona and eruptions to perform validation tests and show that the multi-slit disambiguation approach allows accurate determination of MUSE observables in locations where significant multi-slit contamination occurs.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 3
Shear Measurement Bias Due to Spatially Varying Spectral Energy Distributions in Galaxies
Sowmya Kamath; Joshua E. Meyers; Patricia R. Burchat
<jats:title>Abstract</jats:title> <jats:p>Galaxy color gradients (CGs)—i.e., spectral energy distributions that vary across the galaxy profile—will impact galaxy shape measurements when the modeled point-spread function (PSF) corresponds to that for a galaxy with spatially uniform color. This paper describes the techniques and results of a study of the expected impact of galaxy CGs on weak lensing measurements with the Large Synoptic Survey Telescope (LSST) when the PSF size depends on wavelength. The bias on cosmic shear measurements from CGs is computed both for parametric bulge+disk galaxy simulations and for more realistic chromatic galaxy surface brightness profiles based on <jats:italic>Hubble Space Telescope V</jats:italic>- and <jats:italic>I</jats:italic>-band images in the All-Wavelength Extended Groth Strip International Survey (AEGIS). For the parametric galaxies, and for the more realistic galaxies derived from AEGIS galaxies with a sufficient signal-to-noise ratio that CG bias can be isolated, the predicted multiplicative shear biases due to CGs are found to be at least a factor of two below the LSST full-depth requirement on the <jats:italic>total</jats:italic> systematic uncertainty in the redshift-dependent shear calibration. The analysis code and data products are publicly available (<jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="https://github.com/sowmyakth/measure_cg_bias" xlink:type="simple">https://github.com/sowmyakth/measure_cg_bias</jats:ext-link>).</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 23
Turbulence in the Local Interstellar Medium and the IBEX Ribbon
E. J. Zirnstein; J. Giacalone; R. Kumar; D. J. McComas; M. A. Dayeh; J. Heerikhuisen
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 29
Quasi-simultaneous Spectroscopic and Multiband Photometric Observations of Blazar S5 0716+714 During 2018–2019
Hai-Cheng Feng; H. T. Liu; J. M. Bai; L. F. Xing; Y. B. Li; M. Xiao; Y. X. Xin
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 30
Hubble Space Telescope Imaging of Antlia B: Star Formation History and a New Tip of the Red Giant Branch Distance
J. R. Hargis; S. Albers; D. Crnojević; D. J. Sand; D. R. Weisz; J. L. Carlin; K. Spekkens; B. Willman; A. H. G. Peter; C. J. Grillmair; A. E. Dolphin
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 31
Testing the Cosmic Distance Duality Relation with the Latest Strong Gravitational Lensing and Type Ia Supernovae
Meng-Zhen Lyu; Zheng-Xiang Li; Jun-Qing Xia
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 32
Hα Emission and the Dependence of the Circumgalactic Cool Gas Fraction on Halo Mass
Huanian Zhang; Xiaohu Yang; Dennis Zaritsky; Peter Behroozi; Jessica Werk
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 33
ROBO-AO Kepler Asteroseismic Survey. II. Do Stellar Companions Inhibit Stellar Oscillations?
Jessica Schonhut-Stasik; Daniel Huber; Christoph Baranec; Claire Lamman; Maïssa Salama; Rebecca Jensen-Clem; Dmitry A. Duev; Reed Riddle; S. R. Kulkarni; Nicholas M. Law
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 34
Redshift Determinations from a Self-consistent Grid-based Lens Model for the Hubble Frontiers Field Cluster RXC J2248.7−4431 (AS1063)
Brian M. Y. Chan; Tom Broadhurst; Jeremy Lim; Jess Wong; Jose M. Diego; Dan Coe
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 35
A New Sample of (Wandering) Massive Black Holes in Dwarf Galaxies from High-resolution Radio Observations
Amy E. Reines; James J. Condon; Jeremy Darling; Jenny E. Greene
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 36