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The Mars Reconnaissance Orbiter (MRO) spacecraft has been in orbit around Mars since March 2006. The Context Camera (CTX) on MRO has returned over 100,000 images of the planet at approximately 5-6 meters per pixel, providing nearly global…

天体物理仪器与方法 · 物理学 2020-03-03 Stuart J. Robbins , Michelle R. Kirchoff , Rachael H. Hoover

We present the design and testing of a compact, low-cost stellar spectrometer developed for undergraduate and outreach applications. The instrument employs a 600 lines/mm diffraction grating, a CMOS monochrome sensor, and a 3D-printed mount…

天体物理仪器与方法 · 物理学 2025-11-07 Abhinav Roy , Niti Singh

Long-term synoptic observations in the resonance line of Ca II K constitute a fundamental database for a variety of retrospective analyses of the state of the solar magnetism. Synoptic Ca II K observations began in late 1904 at the…

太阳与恒星天体物理 · 物理学 2016-06-29 Luca Bertello , Alexei A. Pevtsov , Andrey Tlatov , Jagdev Singh

The IBIS data Archive (IBIS-A) stores data acquired with the Interferometric BIdimensional Spectropolarimeter (IBIS), which was operated at the Dunn Solar Telescope of the US National Solar Observatory from 2003 to 2019. The instrument…

We present an update of the visible and near-infrared colour database of Minor Bodies in the Outer Solar System (MBOSSes), which now includes over 2000 measurement epochs of 555 objects, extracted from over 100 articles. The list is fairly…

地球与行星天体物理 · 物理学 2015-06-11 O. R. Hainaut , H. Boehnhardt , S. Protopapa

The Offline software framework for data analysis of the Pierre Auger Observatory is a set of computational tools developed to cater to the needs of a large and geographically dispersed collaboration established to measure the spectrum,…

天体物理仪器与方法 · 物理学 2019-08-13 Javier G. Gonzalez

The study of the differential rotation in the chromosphere of the Sun is of significant importance as it provides valuable insights into the rotational behaviour of the solar atmosphere at higher altitudes and the coupling mechanism between…

太阳与恒星天体物理 · 物理学 2024-12-25 Dibya Kirti Mishra , Srinjana Routh , Bibhuti Kumar Jha , Subhamoy Chatterjee , Dipankar Banerjee

Dark (hidden) photons are widely recognised as well motivated candidates for physics beyond the standard model, and have been invoked for the solution of several outstanding problems, including to account for the dark matter in the…

高能物理 - 唯象学 · 物理学 2024-07-12 T. O'Shea , M. Giannotti , I. G. Irastorza , L. M. Plasencia , J. Redondo , J. Ruz , J. K. Vogel

We have carried out a deep X-ray observation on a typical Galactic plane region with the Chandra ACIS-I instrument with unprecedented sensitivity and spatial resolution, and detected 274 unidentified X-ray point sources in the \~500 arcmin2…

天体物理学 · 物理学 2015-06-24 Ken Ebisawa , V. Beckmann , T. J. -L. Courvoisier , P. Dubath , H. Kaneda , Y. Maeda , S. Yamauchi , E. Nishihara

Context: The Javalambre Photometric Local Universe Survey (J-PLUS) is an observational campaign that aims to obtain photometry in 12 ultraviolet-visible filters (0.3-1 {\mu}m) of approximately 8 500 deg{^2} of the sky observable from…

(Abridged) Aims: In this paper, we seek to establish the suitability of imaging spectroscopy performed in the Ca II 854.2 nm line as a means to investigate the solar chromosphere at high resolution. Methods: We utilize monochromatic images…

We introduce the concept of a Background-subtracted Solar Activity Map (BaSAM) as a new quantitative tool to assess and visualize the temporal variation of the photospheric magnetic field and the UV 160 nm intensity. The method utilizes…

太阳与恒星天体物理 · 物理学 2019-06-19 Carsten Denker , Meetu Verma

We present a database of 908 spectra of 709 stars obtained with the ELODIE spectrograph at Observatoire de Haute-Provence. 52 orders of the echelle spectra have been carefully fitted together to provide continuous, high-resolution spectra…

天体物理学 · 物理学 2009-11-06 Philippe Prugniel , Caroline Soubiran

A review of the MOA (Microlensing Observations in Astrophysics) project is presented. MOA is a collaboration of approximately 30 astronomers from New Zealand and Japan established with the aim of finding and detecting microlensing events…

As the precision frontier of astrophysics advances towards the one millimagnitude level, flux calibration of photometric instrumentation remains an ongoing challenge. We present the results of a lab-bench assessment of the viability of…

天体物理仪器与方法 · 物理学 2021-08-24 Sasha Brownsberger , Lige Zhang , David Andrade , Christopher Stubbs

In August 2025 a workshop was convened to bring together experts to better understand steps that can be taken to mitigate the impact of satellite constellations on astronomical observations. At the time, just over 12,000 operational…

Unlike other stars, the surface of the Sun can be spatially resolved to a high degree of detail. But the Sun can also be observed as if it was a distant star. The availability of solar disk-resolved and disk-integrated spectra offers an…

太阳与恒星天体物理 · 物理学 2014-11-27 Alexei Pevtsov , Luca Bertello , Brian Harker , Mark Giampapa , Andrew Marble

Due to its unique long-term coverage and high photometric precision, observations from the Kepler asteroseismic investigation will provide us with the possibility to sound stellar cycles in a number of solar-type stars with…

太阳与恒星天体物理 · 物理学 2015-05-14 C. Karoff , T. S. Metcalfe , W. J. Chaplin , S. Frandsen , F. Grundahl , H. Kjeldsen , D. Buzasi , T. Arentoft , J. Christensen-Dalsgaard

The DEEP2/DEIMOS redshift survey, which will begin observing in the Spring of 2002, will gather high quality spectra on ~60000 galaxies in order to study the evolution of the properties and large scale clustering of galaxies at z~1. The…

天体物理学 · 物理学 2007-05-23 Christian Marinoni , Marc Davis , Alison L. Coil , Douglas Finkbeiner