Abstract
We report on observations of Mrk 421 and Mrk 501 at E-gamma 300 GeV during the 1995 and 1996 seasons. A multiwavelength observing campaign on Mrk 421 in the period 1995 April 20 to May 5 indicates correlations in the gamma-ray, X-ray, extreme ultraviolet, and optical wavelengths. Dramatic outbursts of TeV gamma-rays were detected on two occasions in May of 1996 where the gamma-ray flux reached the highest levels ever recorded (a factor of similar to 20 greater than typical levels) with variability timescales less than or similar to 1hr. Together with the multiwavelength correlations these provide serious constraints on the Doppler factor (delta greater than or similar to 9.9), the size and location of the emission region (R less than or similar to 10(-4)pc) and the mechanism responsible for the gamma-ray emission. Published by Elsevier Science Ltd on behalf of COSPAR.
| Original language | English (Ireland) |
|---|---|
| Title of host publication | Gamma-ray variability of BL LACS at E 300 GeV |
| Number of pages | 7 |
| Volume | 21 |
| Publication status | Published - 1 Jan 1998 |
Authors (Note for portal: view the doc link for the full list of authors)
- Authors
- Buckley, JH,Akerlof, CW,Biller, S,Boyle, PJ,Breslin, AC,Carter-Lewis, DA,Cantanese, M,Cawley, MF,Connaughton, V,Fegan, DJ,Finley, JP,Gaidos, J,Gordo, JB,Hillas, AM,Krennrich, F,Lambs, RC,Lessard, R,Masterson, C,McEnery, JE,Mohanty, G,Moriarty, P,Quinn, J,Rodgers, AJ,Rose, HJ,Samuelson, F,Schubnell, MS,Sembroski, G,Srinivasan, R,Weekes, TC,Wilson, C,Zweerink, J