Results 61 to 70 of about 345 (143)

Influence of Density Distribution on Synchrotron Polarization Dispersion in Magnetized Interstellar Medium

The Astrophysical Journal
Faraday rotation measure (RM) synthesis is a well-known approach originated in B. J. Burn and later developed by M. A. Brentjens & A. G. de Bruyn for studying magnetic fields.
Ya-Wen Xiao, Jian-Fu Zhang, Alex Lazarian, Dmitri Pogosyan   +3 more
doaj   +1 more source

The Effects of Cosmic-Ray Protons on Galactic Nonthermal Filaments

The Astrophysical Journal
The Galactic center (GC) contains a collection of filaments that are typically tens of parsecs in length, illuminated by synchrotron radiation from cosmic rays (CRs). The origin of these nonthermal filaments (NTFs) is unclear.
Mohan Richter-Addo, Roark Habegger, Ellen Zweibel, Dylan M. Paré, David T. Chuss   +4 more
doaj   +1 more source

Robust magnetic field estimates in star-forming galaxies with the equipartition formula in the absence of equipartition

Astronomy & Astrophysics
The equipartition model is widely used to estimate magnetic field strength from synchrotron intensity in radio galaxies, yet the validity of its underlying assumptions remains uncertain.
Sandy Chiu H.-H., Ruszkowski Mateusz, Werhahn Maria, Pfrommer Christoph, Thomas Timon   +4 more
doaj   +1 more source

Recovering 3D Magnetic Turbulence from Single-frequency Faraday Screens

The Astrophysical Journal
Statistics of polarized synchrotron radiation carry information about the properties of the underlying turbulence. We consider a setup in which synchrotron radiation is emitted in a distant volume and then passes through a turbulent screen that induces ...
A. Melnichenka, A. Lazarian, D. Pogosyan
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

First Detection of Circular Polarization in Radio Continuum Toward a Massive Protostar

The Astrophysical Journal Letters
Polarization measurements provide strong constraints on magnetic fields in star-forming systems. While magnetic field estimates of a few kG have been obtained near the surfaces of low-mass protostars, there are no analogous measurements in the immediate ...
A. G. Cheriyan, S. Vig, Nirupam Roy, Samir Mandal, C. Carrasco-González, A. Rodríguez-Kamenetzky, A. Pasetto   +6 more
doaj   +1 more source

Particle Acceleration and Depolarization in the Protostellar Jet Knots HH 80 and HH 81

The Astrophysical Journal
Linearly polarized emission is a powerful tracer of magnetic field geometry and particle acceleration in protostellar jets. We present a polarimetric study of the Herbig–Haro (HH) objects HH 80 and HH 81, where nonthermal emission has been confirmed ...
A. G. Cheriyan, S. Vig, Nirupam Roy, Samir Mandal, C. Carrasco-González, A. Rodríguez-Kamenetzky, A. Pasetto   +6 more
doaj   +1 more source

Spatially resolved interstellar dust properties in the face-on spiral galaxy M 99 as observed by NIKA2

Astronomy & Astrophysics
Context. Large dust grains in thermal equilibrium dominate the far-infrared emission of star-forming galaxies and substantially contribute to their millimetre continuum. Constraining dust properties in this regime is challenging due to contamination from
Pantoni L., Galliano F., Madden S. C., Adam R., Ade P., Ajeddig H., André P., Artis E., Aussel H., Baes M., Beelen A., Benoît A., Berta S., Bing L., Bourrion O., Calvo M., Casasola V., Catalano A., Chang I.-D., De Looze I., De Petris M., Désert F.-X., Doyle S., Driessen E. F. C., Ejlali G., Gomez A., Goupy J., Jones A. P., Hanser C., Hughes A., Katsioli S., Kéruzoré F., Koch E. W., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J. F., Maury A., Mauskopf P., Mayet F., Monfardini A., Moyer-Anin A., Muñoz-Echeverría M., Nersesian A., Paradis D., Perotto L., Pisano G., Ponthieu N., Revéret V., Rigby A. J., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Sievers A., Smith M. W. L., Tabatabaei F. S., Tedros J., Tucker C., Ysard N., Xilouris E. M., Zylka R.   +64 more
doaj   +1 more source

The cosmic ray ionization and γ-ray budgets of star-forming galaxies. [PDF]

Mon Not R Astron Soc, 2023
Krumholz MR, Crocker RM, Offner SSR.
europepmc   +1 more source

The Radio and Microwave Sky as Seen by Juno on its Mission to Jupiter

The Astrophysical Journal
We present six nearly full-sky maps made from data taken by radiometers on the Juno satellite during its 5 yr flight to Jupiter. The maps represent integrated emission over ∼4% passbands spaced approximately in octaves between 600 MHz and 21.9 GHz.
C. J. Anderson, P. Berger, T.-C. Chang, O. Doré, S. Brown, S. Levin, M. Seiffert   +6 more
doaj   +1 more source