NDLI: Gamma rays from colliding winds of massive stars

Content Provider	Springer Nature Link
Author	Reimer, Olaf Reimer, Anita Pohl, Martin
Copyright Year	2007
Abstract	Colliding winds of massive binaries have long been considered as potential sites of non-thermal high-energy photon production. This is motivated by the detection of non-thermal spectra in the radio band, as well as by correlation studies of yet unidentified EGRET γ-ray sources with source populations appearing in star formation regions. This work re-considers the basic radiative processes and its properties that lead to high energy photon production in long-period massive star systems. We show that Klein–Nishina effects as well as the anisotropic nature of the inverse Compton scattering, the dominating leptonic emission process, likely yield spectral and variability signatures in the γ-ray domain at or above the sensitivity of current or upcoming gamma ray instruments like GLAST-LAT. In addition to all relevant radiative losses, we include propagation (such as convection in the stellar wind) as well as photon absorption effects, which a priori can not be neglected. The calculations are applied to WR 140 and WR 147, and predictions for their detectability in the γ-ray regime are provided. Physically similar specimen of their kind like WR 146, WR 137, WR 138, WR 112 and WR 125 may be regarded as candidate sources at GeV energies for near-future γ-ray experiments. Finally, we discuss several aspects relevant for eventually identifying this source class as a γ-ray emitting population. Thereby we utilize our findings on the expected radiative behavior of typical colliding wind binaries in the γ-ray regime as well as its expected spatial distribution on the γ-ray sky.
Ending Page	357
Page Count	7
Starting Page	351
File Format	PDF
ISSN	0004640X
e-ISSN	1572946X
Journal	Astrophysics and Space Science
Issue Number	1-4
Volume Number	309
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2007-04-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stars: binaries Stars: winds, outflows Stars: early-type Radiation mechanisms: non-thermal Gamma rays: theory Astronomy
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Nonthermal emission from high-mass microquasar jets affected by orbital motion

Simulations of stellar/pulsar-wind interaction along one full orbit

Astrophysical Jets of Blazars and Microquasars

Clumpy stellar winds and high-energy emission in high-mass binaries hosting a young pulsar

Non-thermal emission processes in massive binaries

Particle acceleration and non-thermal emission in colliding-wind binary systems

Gamma-ray emission from Wolf-Rayet binaries

Modelling the high-energy emission from gamma-ray binaries using numerical relativistic hydrodynamics

Simulations of an inhomogeneous stellar wind interacting with a pulsar wind in a binary system

Gamma rays from colliding winds of massive stars

Similar Documents

Nonthermal emission from high-mass microquasar jets affected by orbital motion

Simulations of stellar/pulsar-wind interaction along one full orbit

Astrophysical Jets of Blazars and Microquasars

Clumpy stellar winds and high-energy emission in high-mass binaries hosting a young pulsar

Non-thermal emission processes in massive binaries

Particle acceleration and non-thermal emission in colliding-wind binary systems

Gamma-ray emission from Wolf-Rayet binaries

Modelling the high-energy emission from gamma-ray binaries using numerical relativistic hydrodynamics

Simulations of an inhomogeneous stellar wind interacting with a pulsar wind in a binary system

Gamma rays from colliding winds of massive stars