Cosmic ray acceleration to ultrahigh energy in radio galaxies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00536089" target="_blank" >RIV/67985815:_____/19:00536089 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/epjconf/201921004002" target="_blank" >https://doi.org/10.1051/epjconf/201921004002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201921004002" target="_blank" >10.1051/epjconf/201921004002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cosmic ray acceleration to ultrahigh energy in radio galaxies

Popis výsledku v původním jazyce

The origin of ultrahigh energy cosmic rays (UHECRs) is an open question. In this proceeding, we first review the general physical requirements that a source must meet for acceleration to 10-100 EeV, including the consideration that the shock is not highly relativistic. We show that shocks in the backflows of radio galaxies can meet these requirements. We discuss a model in which giant-lobed radio galaxies such as Centaurus A and Fornax A act as slowly-leaking UHECR reservoirs, with the UHECRs being accelerated during a more powerful past episode. We also show that Centaurus A, Fornax A and other radio galaxies may explain the observed anisotropies in data from the Pierre Auger Observatory, before examining some of the difficulties in associating UHECR anisotropies with astrophysical sources.

Název v anglickém jazyce

Cosmic ray acceleration to ultrahigh energy in radio galaxies

Popis výsledku anglicky

The origin of ultrahigh energy cosmic rays (UHECRs) is an open question. In this proceeding, we first review the general physical requirements that a source must meet for acceleration to 10-100 EeV, including the consideration that the shock is not highly relativistic. We show that shocks in the backflows of radio galaxies can meet these requirements. We discuss a model in which giant-lobed radio galaxies such as Centaurus A and Fornax A act as slowly-leaking UHECR reservoirs, with the UHECRs being accelerated during a more powerful past episode. We also show that Centaurus A, Fornax A and other radio galaxies may explain the observed anisotropies in data from the Pierre Auger Observatory, before examining some of the difficulties in associating UHECR anisotropies with astrophysical sources.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GB14-37086G" target="_blank" >GB14-37086G: Centrum Alberta Einsteina pro gravitaci a astrofyziku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EPJ Web of Conferences.

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

04002

Název nakladatele

EDP Sciences

Místo vydání

Les Ulis

Místo konání akce

Paris

Datum konání akce

8. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000570466200033