File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1086/309949
- Scopus: eid_2-s2.0-15444369749
- Find via
Supplementary
-
Citations:
- Scopus: 0
- Appears in Collections:
Article: Delayed MeV-GeV Gamma-Ray Photons in Gamma-Ray Bursts: an Effect of Electromagnetic Cascades of Very High Energy Gamma-Rays in the Infrared/Microwave Background
| Title | Delayed MeV-GeV Gamma-Ray Photons in Gamma-Ray Bursts: an Effect of Electromagnetic Cascades of Very High Energy Gamma-Rays in the Infrared/Microwave Background |
|---|---|
| Authors | |
| Keywords | Gamma rays: bursts Infrared - general |
| Issue Date | 1996 |
| Publisher | University of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/ApJ |
| Citation | The Astrophysical Journal, 1996, v. 459, p. L79-L82 How to Cite? |
| Abstract | We show that the electromagnetic cascade of very high energy gamma-rays from gamma-ray bursts in the IR/microwave background will produce delayed MeV--GeV photons. Monte Carlo simulations have been performed to study this process. The distance of GB 940217 is estimated to be not less than 120 Mpc using our model, which supports a cosmological origin for this source. We also show that the time delays of gamma-ray photons are inversely proportional to their energy. Our model does not require the presence of intergalactic magnetic fields. |
| Persistent Identifier | http://hdl.handle.net/10722/43163 |
| ISSN | 2021 Impact Factor: 5.521 2020 SCImago Journal Rankings: 2.376 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Cheng, LX | en_HK |
| dc.contributor.author | Cheng, KS | en_HK |
| dc.date.accessioned | 2007-03-23T04:40:27Z | - |
| dc.date.available | 2007-03-23T04:40:27Z | - |
| dc.date.issued | 1996 | en_HK |
| dc.identifier.citation | The Astrophysical Journal, 1996, v. 459, p. L79-L82 | en_HK |
| dc.identifier.issn | 0004-637X | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/43163 | - |
| dc.description.abstract | We show that the electromagnetic cascade of very high energy gamma-rays from gamma-ray bursts in the IR/microwave background will produce delayed MeV--GeV photons. Monte Carlo simulations have been performed to study this process. The distance of GB 940217 is estimated to be not less than 120 Mpc using our model, which supports a cosmological origin for this source. We also show that the time delays of gamma-ray photons are inversely proportional to their energy. Our model does not require the presence of intergalactic magnetic fields. | en_HK |
| dc.format.extent | 596601 bytes | - |
| dc.format.extent | 12158 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.format.mimetype | text/plain | - |
| dc.language | eng | en_HK |
| dc.publisher | University of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/ApJ | en_HK |
| dc.rights | The Astrophysical Journal. Copyright © University of Chicago Press. | en_HK |
| dc.subject | Gamma rays: bursts | en_HK |
| dc.subject | Infrared - general | en_HK |
| dc.title | Delayed MeV-GeV Gamma-Ray Photons in Gamma-Ray Bursts: an Effect of Electromagnetic Cascades of Very High Energy Gamma-Rays in the Infrared/Microwave Background | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=459&spage=L79&epage=L82&date=1996&atitle=Delayed+MeV-GeV+Gamma-Ray+Photons+in+Gamma-Ray+Bursts:+an+Effect+of+Electromagnetic+Cascades+of+Very+High+Energy+Gamma-Rays+in+the+Infrared/Microwave+Background | en_HK |
| dc.description.nature | published_or_final_version | en_HK |
| dc.identifier.doi | 10.1086/309949 | en_HK |
| dc.identifier.scopus | eid_2-s2.0-15444369749 | - |
| dc.identifier.hkuros | 11053 | - |
| dc.identifier.issnl | 0004-637X | - |