Results 41 to 50 of about 34,734 (271)

Ice Age Epochs and the Sun's Path Through the Galaxy

, 2005
We present a calculation of the Sun's motion through the Milky Way Galaxy over the last 500 million years. The integration is based upon estimates of the Sun's current position and speed from measurements with Hipparcos and upon a realistic model for the
Amaral L. H., D. R. Gies, Feast M., Ibata R. A., Imbrie J., J. W. Helsel, Jenkins A., Matsumoto M., Rautiainen P.   +8 more
core   +1 more source

Beacon Satellite Symposium: Session 5B - June 30th 2016: Radio Occultation Techniques and Measurements [PDF]

, 2016
During the Beacon Satellite Symposium, held in Trieste, Italy, between June 26 and July 1 2016, the JRC chaired the session 5B: Radio Occultation Techniques and Measurements. The corresponding abstract of the session is provided as follows: Since the mid-
ARAGON ANGEL MARIA ANGELES
core   +1 more source

Multi messenger astronomy and CTA: TeV cosmic rays and electrons

, 2012
Cosmic rays are a sample of solar, galactic and extragalactic matter. Their origin and properties are one of the most intriguing question in modern astrophysics. The most energetic events and active objects in the Universe: supernovae explosion, pulsars,
Abdo, Abdo, Ackermann, Ackermann, Adriani, Adriani, Adriani, Adriani, Aguilar, Aharonian, Aharonian, Aharonian, Aharonian, Ahlers, Ahn, Alcaraz, Alcaraz, Allen, Antoni, Antoni, Apel, Asakimori, Ave, Blasi, Boezio, Boezio, Boezio, Chang, Cirelli, Cronin, Delahaye, DuVernois, Earl, Engelmann, Erlykin, Fujita, Funk, Ginzburg, Giuliani, Gleeson, Grimani, Haino, Hareyama, Hörandel, Kamae, Kobayashi, Koyama, Maestro, Malyshev, Menn, Mirko Boezio, Müller, Nishimura, Obermeier, Piergiorgio Picozza, Ptuskin, Shaviv, Shong, Strong, Swordy, Tavani, Torii, Yoon, Zatsepin   +63 more
core   +1 more source

Vacuum Fluctuations of a massless spin-1/2 field around multiple cosmic strings [PDF]

, 1997
We study the interaction of a massless quantized spinor field with the gravitational filed of N parallel static cosmic strings by using a perturbative approach.
A N Aliev, Aliev A N, Aliev A N, Birrel H D, Gal'tsov D V, Gradshteyn I S, Hindmarsh M B, Hortaçsu M, Letelier P S, Linet B, M Hortaçsu, N Özdemir, Newman E T, Newman E T, Nutku Y, Ryder L H, Smith A G, Vilenkin A   +17 more
core   +2 more sources

Assessment of Accuracy of COSMIC and KOMPSAT Radio Occultation Temperature and Pressure [PDF]

E3S Web of Conferences
Radio Occultation is a technique used by orbiting satellites to measure planetary atmosphere properties like temperature, pressure, and water vapor.
Descalzo Karl Philippe A., Macalalad Ernest P.   +1 more
doaj   +1 more source

Nonthermal Emissions from a Head–Tail Radio Galaxy in 3D Magnetohydrodynamic Simulations

The Astrophysical Journal, 2023
We present magnetohydrodynamic simulations of a jet–wind interaction in a galaxy cluster and the radio to gamma-ray and neutrino emissions from this “head–tail galaxy.” Our simulation follows the evolution of cosmic-ray (CR) particle spectra with energy ...
Takumi Ohmura, Katsuaki Asano, Kosuke Nishiwaki, Mami Machida, Haruka Sakemi   +4 more
doaj   +1 more source

Decaying dark energy in light of the latest cosmological dataset

, 2018
Decaying Dark Energy models modify the background evolution of the most common observables, such as the Hubble function, the luminosity distance and the Cosmic Microwave Background temperature-redshift scaling relation.
de Martino, Ivan
core   +1 more source

Inverse Compton Scattering as the Source of Diffuse EUV Emission in the Coma Cluster of Galaxies [PDF]

, 1998
We have examined the hypothesis that the majority of the diffuse EUV flux in the Coma cluster is due to inverse Compton scattering of low energy cosmic ray electrons (0.16 < epsilon < 0.31 GeV) against the 3K black-body background. We present data on the
Bell T., Blumenthal G. R., Bridle A. H., Briel U. G., Deiss B. M., Deiss B. M., Deiss B. M., Ensslin T. A., Feretti L., Mittaz J. P. D., Schlickeiser R., Stuart Bowyer, Thomas W. Berghofer, White S. D. M.   +13 more
core   +3 more sources

Effect of Mask Regions on Weak Lensing Statistics

, 2013
Sky masking is unavoidable in wide-field weak lensing observations. We study how masks affect the measurement of statistics of matter distribution probed by weak gravitational lensing.
Hamana, Takashi, Shirasaki, Masato, Yoshida, Naoki   +2 more
core   +1 more source

Cis‐regulatory and long noncoding RNA alterations in breast cancer – current insights, biomarker utility, and the critical need for functional validation

Molecular Oncology, EarlyView.
The noncoding region of the genome plays a key role in regulating gene expression, and mutations within these regions are capable of altering it. Researchers have identified multiple functional noncoding mutations associated with increased cancer risk in the genome of breast cancer patients.
Arnau Cuy Saqués, Aracele Martinez‐Mendez, John Crown, Alex Eustace   +3 more
wiley   +1 more source