Results 51 to 60 of about 988 (180)

Imprints of the Local Bubble and Dust Complexity on Polarized Dust Emission

The Astrophysical Journal
Using 3D dust maps and Planck polarized dust emission data, we investigate the influence of the 3D geometry of the nearby interstellar medium (ISM) on the statistics of the dust polarization on large ( $80^{\prime} $ ) scales.
George Halal, S. E. Clark, Mehrnoosh Tahani   +2 more
doaj   +1 more source

Ryugu reference project: Recommendations from the measurement definition team

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Magnetic Fields in the Southern Coalsack and Beyond

The Astronomical Journal
Starlight polarimetry, when combined with accurate distance measurements, allows for exploration of the three-dimensional structure of local magnetic fields in great detail.
M. J. F. Versteeg, Y. Angarita, A. M. Magalhães, M. Haverkorn, C. V. Rodrigues, R. Santos-Lima, Koji S. Kawabata   +6 more
doaj   +1 more source

From the Modeling of Experiments to the Ab Initio Prediction of Rate Constants: Statistical Rate Theory for a Quantitative Understanding of Gas‐Phase Ion Chemistry

ChemPhysChem, Volume 27, Issue 8, 28 April 2026.
For directly comparing experimental results on gas‐phase ion reactions with the predictions from quantum chemical calculations, the latter must first be converted into rate constants. This review addresses the question of whether current methods of statistical rate theory can accomplish this task reliably. Statistical rate theory has long been used for
Thomas Auth, Konrad Koszinowski
wiley   +1 more source

Applying the Velocity Gradient Technique in NGC 1333: Comparison with Dust Polarization Observations

The Astrophysical Journal
Magnetic fields ( B -fields) are ubiquitous in the interstellar medium (ISM), and they play an essential role in the formation of molecular clouds and subsequent star formation.
Archana Soam, Ka Ho Yuen, Ian Stephens, Chi Yan Law, Ka Wai Ho, Simon Coudé   +5 more
doaj   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

Slope of Magnetic Field–Density Relation as an Indicator of Magnetic Dominance

The Astrophysical Journal
The electromagnetic field is a fundamental force in nature that regulates the formation of stars in the Universe. Despite decades of efforts, a reliable assessment of the importance of the magnetic fields in star formation relations remains missing.
Mengke Zhao, Guang-Xing Li, Keping Qiu
doaj   +1 more source

Systematic Underestimation of Polarization Angle Dispersion and Its Consequences for Magnetic Field Strength Estimates in Star-forming Regions

The Astrophysical Journal
Polarised dust emission observations are a valuable tool to infer the structure of the magnetic field, and the dispersion of polarization position angles may be used to estimate magnetic field strengths. A natural consequence of magnetodynamic turbulence
Seamus D. Clarke, Ya-Wen Tang, Patrick M. Koch, Gary A. Fuller, Dawei Xi   +4 more
doaj   +1 more source

BISTRO Survey: Gravity-dominated and Magnetically Regulated Star Formation in M17 SW

The Astrophysical Journal
We present high-resolution magnetic field maps of the M17 SW molecular cloud using JCMT 850 μ m dust polarization at scale of 14″. The magnetic field exhibits a distinct arc-like structure that encircles three dense clumps (C1, C2, and C3).
Mengke Zhao, Keping Qiu, Ji-hyun Kang, Xindi Tang, Anthony Whitworth, Derek Ward-Thompson, Takashi Onaka, Chang Won Lee, Tyler L. Bourke, Jihye Hwang, David Eden, Thiem Hoang, Motohide Tamura, Jungmi Kwon, Felix Priestley, Kee-Tae Kim, Doris Arzoumanian, James Di Francesco, Chakali Eswaraiah, Doug Johnstone, Bich Ngoc Nguyen, Zhiwei Chen, Sarah Sadavoy, Archana Soam, Ray S. Furuya, Shih-Ping Lai, Woojin Kwon, Pierre Bastien, Kate Pattle, David Berry   +29 more
doaj   +1 more source

Evidence of Gradients of Density and Magnetic Field in the Remnant of Tycho’s Supernova

The Astrophysical Journal
By using surface brightness maps of Tycho’s supernova remnant (SNR) in radio and X-rays, along with the properties of thermal and synchrotron emission, we have derived the postshock density and magnetic field (MF) strength distributions over the ...
Oleh Petruk, Taras Kuzyo, Mariana Patrii, Laura Chomiuk, Maria Arias, Marco Miceli, Salvatore Orlando, Fabrizio Bocchino   +7 more
doaj   +1 more source