Results 71 to 80 of about 238,114 (290)

Discovery of VHE and HE emission from the blazar 1ES 0414+009 with H.E.S.S and Fermi-LAT

, 2011
The high energy peaked BL Lac (HBL) object 1ES 0414+009 (z=0.287) is a distant very high-energy (VHE, E > 100 GeV) blazars with well-determined redshift.
Ajello, M., Costamante, L., Fegan, S., Gérard, L., Hauser, M., Kaufmann, S., Ohm, S., Volpe, F.   +7 more
core   +1 more source

Alternative Approaches for Estimating Highest‐Density Regions

International Statistical Review, EarlyView.
Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley   +1 more source

Observation of extragalactic sources of very high energy gamma-rays with the MAGIC telescope

, 2007
MAGIC is currently the largest single dish ground-based imaging air Cherenkov telescope in operation. During its first cycle of observations more than 20 extragalactic objects have been observed, and very high energy gamma-ray signals have been detected ...
Errando, M.
core   +2 more sources

The nature and formation of silica minerals in eucrite meteorites: Insight into the protoplanetary magma crystallization

Meteoritics &Planetary Science, EarlyView.
Abstract Silica polymorphs in meteorites provide critical constraints on crystallization processes associated with thermal activity in the early solar system. A detailed investigation of silica polymorphs in eucrites (the largest group of achondrites) using cathodoluminescence imaging and laser‐Raman spectroscopy revealed significant variations in the ...
Rei Kanemaru, Akira Yamaguchi, Naoya Imae, Ryoga Maeda, Makoto Kimura, Kenji Horie, Takashi Mikouchi, Masaaki Miyahara, Masahiro Yasutake, Atsushi Takenouchi, Haruka Ono, Aiko Nakato, Junko Isa, Tomohiro Usui, Hirotsugu Nishido   +14 more
wiley   +1 more source

New Timing Results of MSPs from NICER Observations

Universe
Millisecond pulsars (MSPs) are known for their long-term stability. Using six years of observations from the Neutron Star Interior Composition Explorer (NICER), we have conducted an in-depth analysis of the X-ray timing results for six MSPs: PSRs B1937 ...
Shijie Zheng, Dawei Han, Heng Xu, Kejia Lee, Jianping Yuan, Haoxi Wang, Mingyu Ge, Liang Zhang, Yongye Li, Yitao Yin, Xiang Ma, Yong Chen, Shuangnan Zhang   +12 more
doaj   +1 more source

The Vast Potential of Exoplanet Satellites for High-Energy Astrophysics

, 2019
The photometric precision, monitoring baselines, and rapid, even sampling rates required by modern satellites designed for detecting the signal of transiting exoplanets are ideally suited to a large number of applications in high-energy astrophysics.
Smith, Krista Lynne
core   +1 more source

Investigation and reclassification of four mesosiderites—Implications for their formation

Meteoritics &Planetary Science, EarlyView.
Abstract Mesosiderites are rare, differentiated meteorites, so‐called stony‐iron meteorites—they are impact breccias composed of an unusual mix of crustal basalt and pyroxenite, core‐derived metal, but no mantle materials. This odd mixture makes their origin enigmatic and has inspired many different formation theories over the last several decades ...
Gabriel Zachén, Carl Alwmark, Sanna Alwmark, Ludovic Ferrière, Roger H. Hewins   +4 more
wiley   +1 more source

Space and High Energy Astrophysics [PDF]

, 1997
Between 1993 July 1 and 1996 June 30 there were 230 papers published in the major astronomical journals with IRAS data a major enough theme that the word IRAS appeared in the title.
Lonsdale, Carol
core  

Petrography of phosphates in CI and CY carbonaceous chondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison, A. J. King, R. H. Jones, L. Piani   +3 more
wiley   +1 more source

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source