Results 1 to 10 of about 14,650 (219)

Toward a General Theory of Grain Alignment and Disruption by Radiative Torques and Magnetic Relaxation

The Astrophysical Journal
We generalize the magnetically enhanced radiative torque (MRAT) theory for astrophysical environments described by a dimensionless parameter U /( n _1 T _2 ) with U the radiation strength, n _1  =  n _H /(10 cm ^−3 ) the normalized hydrogen density, and ...
Thiem Hoang
doaj   +1 more source

The local dust foregrounds in the microwave sky: I. Thermal emission spectra

, 2009
Analyses of the cosmic microwave background (CMB) radiation maps made by the Wilkinson Microwave Anisotropy Probe (WMAP) have revealed anomalies not predicted by the standard inflationary cosmology.
Dikarev, V., Krivov, A., Krueger, H., Preuss, O., Solanki, S.   +4 more
core   +1 more source

Charged Dust Particles in Interplanetary Space [PDF]

Charged dust particles in interplanetary ...
Divari, N. B.
core   +1 more source

Fine-grained interplanetary dust input during the Turonian (Late Cretaceous): evidence from osmium isotope and platinum group elements. [PDF]

Sci Rep, 2023
Matsumoto H, Ishikawa A, Coccioni R, Frontalini F, Suzuki K.   +4 more
europepmc   +1 more source

Cometary micrometeorites and input of prebiotic compounds

BIO Web of Conferences, 2014
The apparition of life on the early Earth was probably favored by inputs of extraterrestrial matter brought by carbonaceous chondrite-like objects or cometary material. Interplanetary dust collected nowadays on Earth is related to carbonaceous chondrites
Engrand C.
doaj   +1 more source

SNOW COVER OF THE CENTRAL ANTARCTICA (VOSTOK STATION) AS AN IDEAL NATURAL TABLET FOR COSMIC DUST COLLECTION: PRELIMINARY RESULTS ON THE IDENTIFICATION OF MICROMETEORITES OF CARBONACEOUS CHONDRITE TYPE

Лëд и снег, 2015
During the 2010/11 season nearby the Vostok station the 56th Russian Antarctic Expedition has collected surface snow in a big amount from a 3 m deep pit using 15 220 L vol. containers (about 70 kg snow each).
E. S. Bulat, V. A. Celmovich, J.-R. Petit, I. M. Gindilis, S. A. Bulat   +4 more
doaj   +1 more source

Comparison of the Oxidation State of Fe in Comet 81P/Wild 2 and Chondritic-Porous Interplanetary Dust Particles

, 2010
The fragile structure of chondritic-porous interplanetary dust particles (CP- IDPs) and their minimal parent-body alteration have led researchers to believe these particles originate in comets rather than asteroids where aqueous and thermal alteration ...
A.J. Westphal, A.L. Butterworth, Bradley, Bradley, Brownlee, Brownlee, Chernick, Dai, Flynn, Flynn, Flynn, Flynn, Fraundorf, Fraundorf, Germani, Ishii, Jarosewich, Kasten, Kelly, Krot, Leroux, Leroux, Liou, M.A. Marcus, MacKinnon, Manceau, Marcus, Marcus, Marcus, Mason, Mason, Mason, Nier, O'Day, Ogliore, Ogliore, R.C. Ogliore, Rambaldi, Rietmeijer, Rubin, S.C. Fakra, Sandford, Schramm, Simon, Stodolna, Thomas, Thomas, Urey, Warren, Warren, Westphal, Westphal, Wooden, Yanai, Z. Gainsforth, Zolensky, Zolensky, Zolensky   +57 more
core   +1 more source

Impact risk from the circumsolar dust ring on Venus’s orbit

Astronomy & Astrophysics
Context. A circumsolar dust ring on Venus’s orbit was discovered following observations by the Helios spacecraft and then confirmed thanks to observations by STEREO and the Parker Solar Probe.
Courtot Ariane, Millinger Mark
doaj   +1 more source

Infrared emission from interplanetary dust [PDF]

The infrared sky is dominated on large scales by emission from interplanetary dust, which produces the zodiacal emission (ZE), and interstellar dust. These two components of the infrared background differ in angular and spectral distribution, allowing ...
Reach, William T.
core   +1 more source

SIMS chemical analysis of extended impact features from the trailing edge portion of experiment AO187-2 [PDF]

One hundred capture cells from the trailing edge, which had lost their cover foils during flight, were optically scanned for extended impact features caused by high velocity projectiles impinging on the cells while the foils were still intact.
Amari, Sachiko, Foote, John, Jessberger, Elmar K., Lange, Gundolf, Simon, Charles, Stadermann, Frank, Swan, Pat, Walker, Robert M., Zinner, Ernst   +8 more
core   +1 more source