scholarly journals Producing synthetic maps of dust polarization using a velocity channel gradient technique

2020 ◽  
Vol 496 (3) ◽  
pp. 2868-2884 ◽  
Author(s):  
Zekun Lu ◽  
A Lazarian ◽  
Dmitri Pogosyan

ABSTRACT In modern cosmology, many efforts have been made to detect the primordial B-mode of cosmic microwave background polarization from gravitational waves generated during inflation. Considering the foreground dust contamination of microwave polarization maps, it is essential to obtain a precise prediction for polarization in dust emission. In this work, we show a new method to produce synthetic maps of dust polarization in the magnetized turbulent interstellar medium from more abundant high-resolution H i data. By using the velocity channel gradient technique, we are able to predict both the direction and degree of dust polarization by investigating spectroscopic H i information in position–position–velocity space. We apply our approach to the Galactic Arecibo L-band Feed Array H i data, and find a good correspondence between synthesized maps and Planck’s polarization measurements at 353 GHz.

1989 ◽  
Vol 106 ◽  
pp. 367-367
Author(s):  
Ian Griffin ◽  
C.J. Skinner ◽  
B.R. Whitmore

We present near IR (H, K and L band) medium resolution (ƛ/Δƛ ∼ 600) spectra for a selection of 9 red giants which have previously been shown to exhibit anomalous dust emission as characterised by their IRAS LRS spectra. The objects observed (during UKIRT and AAT service time) include Carbon stars whose LRS spectra show the 9.7μm silicate feature and also M stars whose LRS spectra display an 11.3μm feature similar to that usually associated with emission from SiC dust grains.


2015 ◽  
Vol 449 (1) ◽  
pp. 243-267 ◽  
Author(s):  
Giovanni Natale ◽  
Cristina C. Popescu ◽  
Richard. J. Tuffs ◽  
Victor P. Debattista ◽  
Jörg Fischera ◽  
...  

2003 ◽  
Vol 584 (2) ◽  
pp. 599-607 ◽  
Author(s):  
Hiroshi Ohno ◽  
Masahiro Takada ◽  
Klaus Dolag ◽  
Matthias Bartelmann ◽  
Naoshi Sugiyama

2018 ◽  
Vol 618 ◽  
pp. C4 ◽  
Author(s):  
F. Vansyngel ◽  
F. Boulanger ◽  
T. Ghosh ◽  
B. Wandelt ◽  
J. Aumont ◽  
...  

2007 ◽  
Vol 376 (2) ◽  
pp. 645-650 ◽  
Author(s):  
Luca Pietranera ◽  
Stefan A. Buehler ◽  
Paolo G. Calisse ◽  
Claudia Emde ◽  
Darren Hayton ◽  
...  

2013 ◽  
Vol 781 (1) ◽  
pp. 5 ◽  
Author(s):  
Aaron M. Meisner ◽  
Douglas P. Finkbeiner

2020 ◽  
Vol 124 (13) ◽  
Author(s):  
S. Adachi ◽  
M. A. O. Aguilar Faúndez ◽  
Y. Akiba ◽  
A. Ali ◽  
K. Arnold ◽  
...  

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