gammapy/gammapy
A Python package for gamma-ray astronomy (⭐ 276)
Underground Water Cherenkov Muon Detector Array with the Tibet Air Shower Array for Gamma-…
We propose to build a large water-Cherenkov-type muon-detector array (Tibet MD array) around the 37,000 m$^{2}$ Tibet air shower array (Tibet AS array) already constructed at 4,300 m above sea level in Tibet, China. Each muon detector is a waterpro...
Astronomy - Science News
2 days ago · Space Betelgeuse’s buddy leaves a wake in the giant star’s atmosphere The wake left by Betelgeuse’s companion could solve a decades-old mystery of its strange brightness cycles.
See how the Hubble Space Telescope is still revolutionizing astronomy
Apr 24, 2025 · Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.
Space - Science News
3 days ago · The Space topic features the latest news in astronomy, cosmology, planetary science, exoplanets, astrobiology and more.
Transit Search from Antarctica and Chile - Comparison and Combination
Observing sites at the East-Antarctic plateau are considered to provide exceptional conditions for astronomy. The aim of this work is to assess its potential for detecting transiting extrasolar planets through a comparison and combination of photomet...
Modeling Stochastic Variability in Multi-Band Time Series Data
In preparation for the era of the time-domain astronomy with upcoming large-scale surveys, we propose a state-space representation of a multivariate damped random walk process as a tool to analyze irregularly-spaced multi-filter light curves with het...
A Short History of Hindu Astronomy & Ephemeris
We have summarized here the astronomical knowledge of the ancient Hindu astronomers. This knowledge was accumulated from before 1500 B.C. up to around 1200 A.D. In Section \ref{equiv} we have correlated terms used by the Hindu astronomers and their...
Opposite of Zenith: A Complete Guide to Its Meaning, Usage, and …
Jul 2, 2025 · Simply put, the opposite of 'zenith' is 'nadir.' While zenith refers to the highest point, nadir indicates the lowest point—commonly used in astronomy, geography, and metaphorical contexts. …
Timeline of scientific discoveries - Wikipedia
elimination. Mathematics and astronomy flourish during the Golden Age of India (4th to 6th centuries AD) under the Gupta Empire. Meanwhile, Greece and its colonies
Synergy between professional and amateur astronomers
Since the CCD technique became financially reachable for amateur astronomers, they can cover topics of professional science. Mainly in the time-domain astronomy, such as variable star research, their help is invaluable. We focus on cooperation betwee...
Amateur - Wikipedia
Astronomy, chemistry, history, linguistics, and the natural sciences are among the fields that have benefited from the activities of amateurs. Gregor Mendel was an amateur scientist who never held a …
Analysis of the distribution of precipitable water vapor in the Chajnantor area
In this work, we present results from a long-term precipitable water vapor (PWV) study in the Chajnantor area, in northern Chile. Data from several instruments located at relevant sites for sub-millimeter and mid-infrared astronomy were processed to...
FITS - Wikipedia
FITS is the most commonly used digital file format in astronomy. The FITS standard was designed specifically for astronomical data, and includes provisions such as describing photometric and spatial …
flare - WordReference.com Dictionary of English
Astronomy Also called solar flare. a sudden and brief brightening of the solar atmosphere in the vicinity of a sunspot that results from an explosive release of particles and radiation.
Advanced Technologies and Instrumentation and the National Science Foundation
Over its more than thirty-year history, the Advanced Technologies and Instrumentation (ATI) program has provided grants to support technology development for ground-based astronomy. Research from this program has advanced adaptive optics, high resolu...
Variation - Wikipedia
Look up variation in Wiktionary, the free dictionary. Variation or Variations may refer to: Variation (astronomy), any perturbation of the mean motion
Very High Energy Gamma Ray Emission from Crab Nebula with the PACT Array
The Crab nebula has proved to be the nearest to a standard candle in VHE $γ-$ ray astronomy. Results on the gamma ray emission from the nebula at various energies have come in the last decade mostly from imaging telescopes. The aim of the new Pach...
Once FITS, Always FITS? Astronomical Infrastructure in Transition
The FITS file format has become the de facto standard for sharing, analyzing, and archiving astronomy data over the last four decades. FITS was adopted by astronomers in the early 1980s to overcome incompatibilities between operating systems. On the...
Astrometry via Close Approach Events: Applications to Main-Belt Asteroid (702) Alauda
The release of Gaia catalog is revolutionary to the astronomy of solar system objects. After some effects such as atmospheric refraction and CCD geometric distortion have been taken into account, the astrometric precision for ground-based telescopes...