Planck confirmation of the disk and halo rotation of M 31

被引：28

作者：

De Paolis, F. ^{[1
,2
]}

Gurzadyan, V. G. ^{[3
,4
]}

Nucita, A. A. ^{[1
,2
]}

Ingrosso, G. ^{[1
,2
]}

Kashin, A. L. ^{[3
,4
]}

Khachatryan, H. G. ^{[3
,4
]}

Mirzoyan, S. ^{[3
,4
]}

Poghosian, E. ^{[3
,4
]}

Jetzer, Ph ^{[5
]}

Qadir, A. ^{[6
]}

Vetrugno, D. ^{[7
,8
]}

机构：

[1] Univ Salento, Dipartimento Matemat & Fis E De Giorgi, I-73100 Lecce, Italy

[2] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[3] Yerevan Phys Inst, Yerevan 375049, Armenia

[4] Yerevan State Univ, Yerevan 375049, Armenia

[5] Univ Zurich, Phys Inst, CH-8057 Zurich, Switzerland

[6] Natl Univ Sci & Technol, Ctr Adv Math & Phys, Rawalpindi 46000, Pakistan

[7] Univ Trento, Dept Phys, I-38123 Povo, Italy

[8] Ist Nazl Fis Nucl, TIFPA, I-38123 Povo, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2014年 / 565卷

基金：

瑞士国家科学基金会;

关键词：

galaxies: general; galaxies: individual: M 31; galaxies: halos; KINEMATICS; GALAXY;

D O I：

10.1051/0004-6361/201423849

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Planck data acquired during the first 15.4 months of observations toward both the disk and halo of the M 31 galaxy were analyzed. We confirm the temperature asymmetry that was previously detected by using the seven-year WMAP data in the direction of the rotation of M 31, which indicates that this is a Doppler-induced effect. The asymmetry extends to about 10 degrees (similar or equal to 130 kpc) from the center of M 31. We also investigated the recent problem raised in Rubin and Loeb (2014, JCAP, 01, 051) about the kinetic Sunyaev-Zel'dovich effect from the diffuse hot gas in the Local Group, which is predicted to generate a hot spot of a few degrees in size in the cosmic microwave background maps in the direction of M 31, where the free electron optical depth is highest. We also considered whether the same effect in the opposite direction with respect to the M 31 galaxy induces a minimum in temperature in the Planck maps of the sky. We find that the Planck data at 100 GHz show an even stronger effect than that expected.

引用

页数：4

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