Synchrotron Emission on the Largest Scales: Radio Detection of the Cosmic-Web

被引:26
作者
Brown, Shea D. [1 ]
机构
[1] CSIRO Astron & Space Sci, Parkes, NSW 2870, Australia
关键词
Relativistic plasmas; cosmology: cosmic-web; ABSOLUTE SKY BRIGHTNESS; MAGNETIC-FIELDS; SHOCK-WAVES; UNIVERSE; BARYONS; ACCELERATION; POLARIZATION; SIMULATIONS; TURBULENCE; GALAXIES;
D O I
10.1007/s12036-011-9114-4
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Shocks and turbulence generated during large-scale structure formation are predicted to produce large-scale, low surface-brightness synchrotron emission. On the largest scales, this emission is globally correlated with the thermal baryon distribution, and constitutes the 'synchrotron cosmic-web'. I present the observational prospects and challenges for detecting this faint emission with upcoming SKA pathfinders.
引用
收藏
页码:577 / 584
页数:8
相关论文
共 42 条
[31]  
Reich P., 1986, Astronomy & Astrophysics Supplement Series, V63, P205
[32]  
Rudnick L, 2009, ASTRP2010 ASTRONOMY, P253
[33]   THE DISCOVERY OF DIFFUSE RADIO POLARIZATION STRUCTURES IN THE NRAO VERY LARGE ARRAY SKY SURVEY [J].
Rudnick, Lawrence ;
Brown, Shea .
ASTRONOMICAL JOURNAL, 2009, 137 (01) :145-156
[34]   Cosmological shock waves and their role in the large-scale structure of the universe [J].
Ryu, D ;
Kang, HS ;
Hallman, E ;
Jones, TW .
ASTROPHYSICAL JOURNAL, 2003, 593 (02) :599-610
[35]   Turbulence and magnetic fields in the large-scale structure of the universe [J].
Ryu, Dongsu ;
Kang, Hyesung ;
Cho, Jungyeon ;
Das, Santabrata .
SCIENCE, 2008, 320 (5878) :909-912
[36]   A physical upper limit on the HI column density of gas clouds [J].
Schaye, J .
ASTROPHYSICAL JOURNAL, 2001, 562 (01) :L95-L98
[37]   INTERPRETATION OF THE ARCADE 2 ABSOLUTE SKY BRIGHTNESS MEASUREMENT [J].
Seiffert, M. ;
Fixsen, D. J. ;
Kogut, A. ;
Levin, S. M. ;
Limon, M. ;
Lubin, P. M. ;
Mirel, P. ;
Singal, J. ;
Villela, T. ;
Wollack, E. ;
Wuensche, C. A. .
ASTROPHYSICAL JOURNAL, 2011, 734 (01)
[38]   Sources of the radio background considered [J].
Singal, J. ;
Stawarz, L. ;
Lawrence, A. ;
Petrosian, V. .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 409 (03) :1172-1182
[39]   GALAXY CLUSTER RADIO RELICS IN ADAPTIVE MESH REFINEMENT COSMOLOGICAL SIMULATIONS: RELIC PROPERTIES AND SCALING RELATIONSHIPS [J].
Skillman, Samuel W. ;
Hallman, Eric J. ;
O'Shea, Brian W. ;
Burns, Jack O. ;
Smith, Britton D. ;
Turk, Matthew J. .
ASTROPHYSICAL JOURNAL, 2011, 735 (02)
[40]   A lower bound on the cosmic baryon density [J].
Weinberg, DH ;
MiraldaEscude, J ;
Hernquist, L ;
Katz, N .
ASTROPHYSICAL JOURNAL, 1997, 490 (02) :564-570