Results 101 to 110 of about 658,780 (159)

Sensitivity of Polarization to Grain Shape. II. Aggregates

The Astrophysical Journal
A previous study (Paper I) investigated the polarization properties of a variety of simple convex grain shapes, some of which were found to be consistent with the observed polarization properties of interstellar dust from far-ultraviolet to far-infrared.
B. T. Draine
doaj   +1 more source

Tidal Disruption of “Snow Clouds” by Unassociated Stars

The Astrophysical Journal
It has been suggested that star-forming galaxies may host a substantial, dark reservoir of gas in the form of planetary-mass molecular clouds that are so cold that H _2 can condense.
Arthur G. Suvorov, Mark A. Walker
doaj   +1 more source

The Spheroidal Analog Method for Modeling Irregular Porous Aggregates

The Astrophysical Journal
It is shown that the optical properties of an irregular porous grain with effective radius a _eff  ≲ 3 λ (where λ is the wavelength) can be well approximated by a “spheroidal analog”: a spheroid with appropriate axial ratio and size, with a dielectric ...
B. T. Draine
doaj   +1 more source

Interstellar Scatter [PDF]

Nature, 1973
openaire   +1 more source

Interstellar Seminar course introduces college students to interstellar studies

Newsletter article in issue 30 of Have Starship, Will Travel, the newsletter of the Interstellar Research Group. It's also called IRG Newsletter.Newsletter archive: https://irg.space/newsletters-have-starship-will ...
Schneegurt, Mark A.
core   +1 more source

Scintillation Bandwidth Measurements from 23 Pulsars from the AO327 Survey

The Astrophysical Journal
A pulsar’s scintillation bandwidth is inversely proportional to the scattering delay, making accurate measurements of scintillation bandwidth critical to characterize unmitigated delays in efforts to measure low-frequency gravitational waves with pulsar ...
Sofia Sheikh, Grayce C. Brown, Jackson MacTaggart, Thomas Nguyen, William D. Fletcher, Brenda L. Jones, Emma Koller, Veronica Petrus, Katie F. Pighini, Gray Rosario, Vincent A. Smedile, Adam T. Stone, Shawn You, Maura A. McLaughlin, Jacob E. Turner, Julia S. Deneva, Michael T. Lam, Brent J. Shapiro-Albert   +17 more
doaj   +1 more source

PERTURBATION THEORY FOR ELECTROMAGNETIC WAVE SCATTERING IN RANDOM LAYERED STRUCTURES [PDF]

, 2010
The problem of electromagnetic wave scattering in 3-D random layered structures, is analytical treated by relying on original results of the Boundary Perturbation Theory (BPT) and Volumetric-Perturbative Reciprocal Theory (VPRT), whose structured ...
Imperatore, Pasquale
core   +1 more source

An Anisotropic Plasma Model of the Heliospheric Interface

The Astrophysical Journal
We present a pioneering model of the interaction between the solar wind and the surrounding interstellar medium that includes the possibility of different pressures in directions parallel and perpendicular to the magnetic field.
Vladimir Florinski, Dinshaw S. Balsara, Deepak Bhoriya, Gary P. Zank, Shishir Biswas, Swati Sharma, Sethupathy Subramanian   +6 more
doaj   +1 more source

Interstellar scintillation studies of pulsars and distribution of scattering plasma in the local interstellar medium

, 2001
Pulsar scintillation measurements from the Ooty Radio Telescope (ORT) are used to investigate the distribution of scattering in the Local Interstellar Medium (LISM; region of ≤ 1 kpc of the Sun), specifically the region in and around the Local ...
Gupta, Yashwant, Rao, A. Pramesh, Preethi, P. B., Bhat, N. D. Ramesh   +3 more
core   +1 more source

Pulsar scattering and the ionized interstellar medium

, 2017
Fifty years after the discovery of the first pulsating neutron star, the field of pulsar science has grown into a multidisciplinary research field, working to address a wide range of problems in astrophysics -- from stellar evolution models to high precision tests of General Relativity to analysing the detailed structure of the Interstellar Medium in ...
openaire   +2 more sources