On the structure and scale of cosmic ray modified shocks
On the structure and scale of cosmic ray modified shocks
复制标题
论宇宙射线修正激波的结构和规模
DOI：
10.1088/0741-3335/52/12/124006
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发表时间：
2010
影响因子：
2.2
通讯作者：
R. Sagdeev
中科院分区：
文献类型：
--
作者：
M. Malkov;P. Diamond;R. Sagdeev
强烈的天体物理冲击，扩散加速的宇宙射线（CR）应该发展CR前兆。这种前体的长度Lp被认为是由CR平均自由程λ与冲击速度的比率设定的，即Lp cλ/Vsh crg/Vsh，其形式上与CR压力Pc无关。然而，超新星遗迹激波的X射线观测表明，前兆尺度可能明显短于Lp，这将质疑上述估计，除非磁场被强烈放大，回转半径rg在短（未解决）空间尺度上被强烈减小。我们认为，虽然CR压力建立在冲击波的前面，加速进入一个强非线性阶段，其中声学不稳定性，由CR压力梯度驱动，占主导地位的其他不稳定性（至少在低β等离子体的情况下）。在这种情况下，前体变陡成强非线性波前，其尺寸与CR压力成比例Lf <$Lp ·（Ls/Lp）2（Pc/Pg）2，其中Ls是发展的声学湍流的尺度，Pc/Pg是CR与气体压力的比率。由于Ls ≠ Lp，即使在通过声学和（也可能）由CR驱动的其他不稳定性由CR进行的中等气体加热的情况下，前体尺度减小也可能是强的。
Strong astrophysical shocks, diffusively accelerating cosmic rays (CRs) ought to develop CR precursors. The length of such precursor Lp is believed to be set by the ratio of the CR mean free path λ to the shock speed, i.e. Lp ∼ cλ/Vsh ∼ crg/Vsh, which is formally independent of the CR pressure Pc. However, the x-ray observations of supernova remnant shocks suggest that the precursor scale may be significantly shorter than Lp which would question the above estimate unless the magnetic field is strongly amplified and the gyroradius rg is strongly reduced over a short (unresolved) spatial scale. We argue that while the CR pressure builds up ahead of the shock, the acceleration enters into a strongly nonlinear phase in which an acoustic instability, driven by the CR-pressure gradient, dominates other instabilities (at least in the case of low β plasma). In this regime the precursor steepens into a strongly nonlinear front whose size scales with the CR pressure as Lf ∼ Lp · (Ls/Lp)2(Pc/Pg)2, where Ls is the scale of the developed acoustic turbulence and Pc/Pg is the ratio of CR to gas pressure. Since Ls ≪ Lp, the precursor scale reduction may be strong in the case of even a moderate gas heating by the CRs through the acoustic and (possibly also) the other instabilities driven by the CRs.
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DOI：
10.1088/0004-637x/712/1/459
发表时间：
2010-02
期刊：
The Astrophysical Journal
影响因子：
--
作者：
A. Abdo;A. Abdo;A. Abdo;M. Ackermann;M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;G. Barbiellini;D. Bastieri;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;C. Cecchi;C. Cecchi;O. Celik;O. Celik;A. Chekhtman;A. Chekhtman;C. C. Cheung-C.;J. Chiang;A. Cillis;S. Ciprini;S. Ciprini;R. Claus;J. Cohen-Tanugi;L. Cominsky;J. Conrad;J. Conrad;S. Cutini;C. Dermer;A. Angelis;F. Palma;F. Palma;E. Silva;P. Drell;A. Drlica-Wagner;R. Dubois;D. Dumora;D. Dumora;C. Farnier;C. Favuzzi;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;P. Fusco;F. Gargano;D. Gasparrini;N. Gehrels;N. Gehrels;S. Germani;S. Germani;G. Giavitto;B. Giebels;N. Giglietto;N. Giglietto;F. Giordano;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;M. Grondin;J. Grove;L. Guillemot;L. Guillemot;S. Guiriec;Y. Hanabata;A. Harding;M. Hayashida;R. Hughes;M. Jackson;M. Jackson;G. Jóhannesson;A. Johnson;T. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;J. Kataoka;N. Kawai;M. Kerr;J. Knödlseder;M. Kocian;M. Kuss;J. Lande;L. Latronico;S. Lee;M. Lemoine-Goumard;M. Lemoine-Goumard;F. Longo;F. Longo;F. Loparco;F. Loparco;B. Lott;B. Lott;M. Lovellette;P. Lubrano;P. Lubrano;G. Madejski;A. Makeev;A. Makeev;M. Mazziotta;C. Meurer;P. Michelson;W. Mitthumsiri;A. Moiseev;A. Moiseev;C. Monte;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;T. Nakamori;P. Nolan;J. Norris;E. Nuss;T. Ohsugi;E. Orlando;J. Ormes;M. Ozaki;D. Paneque;J. Panetta;D. Parent;D. Parent;V. Pelassa;M. Pepe;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;S. Rainò;R. Rando;R. Rando;M. Razzano;A. Reimer;O. Reimer;T. Reposeur;T. Reposeur;L. Rochester;A. Rodríguez;R. Romani;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. Parkinson;J. Scargle;C. Sgro’;E. Siskind;D. Smith;D. Smith;P. Smith;G. Spandre;P. Spinelli;P. Spinelli;M. Strickman;A. Strong;D. Suson;H. Tajima;H. Takahashi;Tadayuki Takahashi;Takaaki Tanaka;J. Thayer;J. Thayer;D. Thompson;L. Tibaldo;L. Tibaldo;L. Tibaldo;D. Torres;G. Tosti;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;A. V. Etten;V. Vasileiou;V. Vasileiou;C. Venter;C. Venter;N. Vilchez;V. Vitale;A. Waite;Pengfei Wang;B. Winer;K. Wood;T. Ylinen;M. Ziegler
通讯作者：
A. Abdo;A. Abdo;A. Abdo;M. Ackermann;M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;G. Barbiellini;D. Bastieri;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;C. Cecchi;C. Cecchi;O. Celik;O. Celik;A. Chekhtman;A. Chekhtman;C. C. Cheung-C.;J. Chiang;A. Cillis;S. Ciprini;S. Ciprini;R. Claus;J. Cohen-Tanugi;L. Cominsky;J. Conrad;J. Conrad;S. Cutini;C. Dermer;A. Angelis;F. Palma;F. Palma;E. Silva;P. Drell;A. Drlica-Wagner;R. Dubois;D. Dumora;D. Dumora;C. Farnier;C. Favuzzi;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;P. Fusco;F. Gargano;D. Gasparrini;N. Gehrels;N. Gehrels;S. Germani;S. Germani;G. Giavitto;B. Giebels;N. Giglietto;N. Giglietto;F. Giordano;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;M. Grondin;J. Grove;L. Guillemot;L. Guillemot;S. Guiriec;Y. Hanabata;A. Harding;M. Hayashida;R. Hughes;M. Jackson;M. Jackson;G. Jóhannesson;A. Johnson;T. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;J. Kataoka;N. Kawai;M. Kerr;J. Knödlseder;M. Kocian;M. Kuss;J. Lande;L. Latronico;S. Lee;M. Lemoine-Goumard;M. Lemoine-Goumard;F. Longo;F. Longo;F. Loparco;F. Loparco;B. Lott;B. Lott;M. Lovellette;P. Lubrano;P. Lubrano;G. Madejski;A. Makeev;A. Makeev;M. Mazziotta;C. Meurer;P. Michelson;W. Mitthumsiri;A. Moiseev;A. Moiseev;C. Monte;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;T. Nakamori;P. Nolan;J. Norris;E. Nuss;T. Ohsugi;E. Orlando;J. Ormes;M. Ozaki;D. Paneque;J. Panetta;D. Parent;D. Parent;V. Pelassa;M. Pepe;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;S. Rainò;R. Rando;R. Rando;M. Razzano;A. Reimer;O. Reimer;T. Reposeur;T. Reposeur;L. Rochester;A. Rodríguez;R. Romani;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. Parkinson;J. Scargle;C. Sgro’;E. Siskind;D. Smith;D. Smith;P. Smith;G. Spandre;P. Spinelli;P. Spinelli;M. Strickman;A. Strong;D. Suson;H. Tajima;H. Takahashi;Tadayuki Takahashi;Takaaki Tanaka;J. Thayer;J. Thayer;D. Thompson;L. Tibaldo;L. Tibaldo;L. Tibaldo;D. Torres;G. Tosti;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;A. V. Etten;V. Vasileiou;V. Vasileiou;C. Venter;C. Venter;N. Vilchez;V. Vitale;A. Waite;Pengfei Wang;B. Winer;K. Wood;T. Ylinen;M. Ziegler
SN 1006 激波的小尺度结构与钱德拉观测
DOI：
--
发表时间：
2003
期刊：
The Astrophysical Journal 589
影响因子：
--
作者：
Aya Bamba;Ryo Yamazaki;Masaru Ueno;Katsuji Koyama
通讯作者：
Katsuji Koyama
影响因子：
56.9
作者：
A. Abdo;M. Ackermann;M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;M. Baring;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;C. Cecchi;O. Celik;O. Celik;A. Chekhtman;A. Chekhtman;C. C. Cheung-C.;J. Chiang;S. Ciprini;R. Claus;I. Cognard;J. Cohen-Tanugi;L. Cominsky;J. Conrad;J. Conrad;S. Cutini;C. Dermer;A. Angelis;F. Palma;S. Digel;E. Silva;P. Drell;R. Dubois;D. Dumora;C. Espinoza;C. Farnier;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;F. Gargano;D. Gasparrini;N. Gehrels;N. Gehrels;S. Germani;G. Giavitto;B. Giebels;N. Giglietto;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;J. Grove;L. Guillemot;S. Guiriec;Y. Hanabata;A. Harding;M. Hayashida;E. Hays;R. Hughes;M. Jackson;M. Jackson;G. Jóhannesson;A. Johnson;T. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;J. Katsuta;N. Kawai;M. Kerr;J. Knödlseder;M. Kocian;M. Kramer;M. Kramer;M. Kuss;J. Lande;L. Latronico;M. Lemoine-Goumard;F. Longo;F. Loparco;B. Lott;M. Lovellette;P. Lubrano;A. Lyne;G. Madejski;A. Makeev;A. Makeev;M. Mazziotta;J. Mcenery;C. Meurer;C. Meurer;P. Michelson;W. Mitthumsiri;T. Mizuno;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;T. Nakamori;P. Nolan;J. Norris;A. Noutsos;E. Nuss;T. Ohsugi;N. Omodei;E. Orlando;J. Ormes;D. Paneque;D. Parent;V. Pelassa;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;R. Rando;M. Razzano;A. Reimer;A. Reimer;O. Reimer;T. Reposeur;L. Rochester;A. Rodríguez;R. Romani;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. Parkinson;J. Scargle;C. Sgro’;E. Siskind;D. Smith;P. Smith;G. Spandre;P. Spinelli;B. Stappers;F. Stecker;M. Strickman;D. Suson;H. Tajima;H. Takahashi;Tadayuki Takahashi;Takaaki Tanaka;J. Thayer;J. Thayer;G. Theureau;D. Thompson;L. Tibaldo;O. Tibolla;D. Torres;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;V. Vasileiou;V. Vasileiou;C. Venter;C. Venter;N. Vilchez;V. Vitale;A. Waite;Pengfei Wang;B. Winer;K. Wood;R. Yamazaki;T. Ylinen;T. Ylinen;M. Ziegler
通讯作者：
A. Abdo;M. Ackermann;M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;M. Baring;D. Bastieri;B. Baughman;K. Bechtol;R. Bellazzini;B. Berenji;R. Blandford;E. Bloom;E. Bonamente;A. Borgland;J. Bregeon;A. Brez;M. Brigida;P. Bruel;T. Burnett;S. Buson;G. Caliandro;R. Cameron;P. Caraveo;J. Casandjian;C. Cecchi;O. Celik;O. Celik;A. Chekhtman;A. Chekhtman;C. C. Cheung-C.;J. Chiang;S. Ciprini;R. Claus;I. Cognard;J. Cohen-Tanugi;L. Cominsky;J. Conrad;J. Conrad;S. Cutini;C. Dermer;A. Angelis;F. Palma;S. Digel;E. Silva;P. Drell;R. Dubois;D. Dumora;C. Espinoza;C. Farnier;C. Favuzzi;S. Fegan;W. Focke;P. Fortin;M. Frailis;Y. Fukazawa;S. Funk;P. Fusco;F. Gargano;D. Gasparrini;N. Gehrels;N. Gehrels;S. Germani;G. Giavitto;B. Giebels;N. Giglietto;F. Giordano;T. Glanzman;G. Godfrey;I. Grenier;M. Grondin;J. Grove;L. Guillemot;S. Guiriec;Y. Hanabata;A. Harding;M. Hayashida;E. Hays;R. Hughes;M. Jackson;M. Jackson;G. Jóhannesson;A. Johnson;T. Johnson;T. Johnson;W. Johnson;T. Kamae;H. Katagiri;J. Kataoka;J. Katsuta;N. Kawai;M. Kerr;J. Knödlseder;M. Kocian;M. Kramer;M. Kramer;M. Kuss;J. Lande;L. Latronico;M. Lemoine-Goumard;F. Longo;F. Loparco;B. Lott;M. Lovellette;P. Lubrano;A. Lyne;G. Madejski;A. Makeev;A. Makeev;M. Mazziotta;J. Mcenery;C. Meurer;C. Meurer;P. Michelson;W. Mitthumsiri;T. Mizuno;C. Monte;M. Monzani;A. Morselli;I. Moskalenko;S. Murgia;T. Nakamori;P. Nolan;J. Norris;A. Noutsos;E. Nuss;T. Ohsugi;N. Omodei;E. Orlando;J. Ormes;D. Paneque;D. Parent;V. Pelassa;M. Pepe;M. Pesce-Rollins;F. Piron;T. Porter;S. Rainò;R. Rando;M. Razzano;A. Reimer;A. Reimer;O. Reimer;T. Reposeur;L. Rochester;A. Rodríguez;R. Romani;M. Roth;F. Ryde;H. Sadrozinski;D. Sanchez;A. Sander;P. Parkinson;J. Scargle;C. Sgro’;E. Siskind;D. Smith;P. Smith;G. Spandre;P. Spinelli;B. Stappers;F. Stecker;M. Strickman;D. Suson;H. Tajima;H. Takahashi;Tadayuki Takahashi;Takaaki Tanaka;J. Thayer;J. Thayer;G. Theureau;D. Thompson;L. Tibaldo;O. Tibolla;D. Torres;G. Tosti;A. Tramacere;Y. Uchiyama;T. Usher;V. Vasileiou;V. Vasileiou;C. Venter;C. Venter;N. Vilchez;V. Vitale;A. Waite;Pengfei Wang;B. Winer;K. Wood;R. Yamazaki;T. Ylinen;T. Ylinen;M. Ziegler
五颗历史超新星遗迹中非热丝的空间和光谱研究；
DOI：
--
发表时间：
2005
期刊：
The Astrophysical Journal (印刷中)
影响因子：
--
作者：
Bamba;A.;Yamazaki;R.;Yoshida;T.;Terasawa;T.;Koyama;K.
通讯作者：
K.