ICRC2015

Session

Parallel GA12 EGAL

3 Aug 2015, 11:00

World Forum

787. Reconcilement of the VHE γ-ray/X-ray correlation studies in Mrk 421 and break-down at high VHE fluxes

Dr Barbara Patricelli (University of Pisa, INFN Pisa and Astronomy Institute of UNAM)

03/08/2015, 11:00

GA-EX

Oral contribution

The blazar Mrk 421 is one of the closest, brightest and fastest varying source in the extragalactic X-ray/TeV sky. In the last years, many multiwavelength campaigns have been carried out to study the correlation between the VHE $\gamma$-ray and X-ray fluxes of this source and, although the activity in these two energy ranges seems to be correlated in many observations, no conclusive results...

783. Recent follow-up observations of GRBs in the very high energy band with the MAGIC Telescopes

Alessandro Carosi (INAF-ASDC)

03/08/2015, 11:15

GA-EX

Oral contribution

Gamma-ray burst (GRBs) are primary targets for all modern IACT telescope. The MAGIC collaboration has identified the detection of GRBs in the VHE regime as one of its multi-year key observational programs (KOP). However, the transient and unpredictable nature of GRBs makes pointing and rapid follow-up observations to observe the prompt emission phase difficult for large ground-based Cherenkov...

728. Gamma-Ray Burst observations with Fermi

Elisabetta Bissaldi (INFN Bari)

03/08/2015, 11:30

GA-EX

Oral contribution

After almost 7 years of science operation, the Fermi mission has brought great advances in the study of GRBs. Over 1500 gamma-ray bursts (GRBs) have been detected by the Gamma-ray Burst Monitor (GBM), and more than 100 of these are also detected by the Fermi Large Area Telescope (LAT) above 30 MeV. We will give an overview of these observations, presenting the common properties in the GRB...

485. First study of Mrk501 through the eyes of NuSTAR, VERITAS and the {\it LIDAR-corrected} eyesight of MAGIC

Koji Noda (Max-Planck-Institute for Physics)

03/08/2015, 11:45

GA-EX

Oral contribution

The blazar Mrk501 is among the brightest X-ray and TeV sources in the sky, and among the few sources whose (radio to VHE gamma-rays) Spectral Energy Distributions can be characterized by current instruments by means of relatively short observations (minutes to hours). In 2013, we organized an extensive multi-instrument campaign involving the participation of Fermi LAT, MAGIC, VERITAS, F-GAMMA,...

237. First results from HAWC on GRBs

Dirk Lennarz (Georgia Tech)

03/08/2015, 12:00

GA-EX

Oral contribution

We will present the first results of HAWC in searching for VHE gamma-ray emission from GRBs reported by Fermi, Swift and other satellite. The HAWC gamma-ray observatory is operating in central Mexico at an altitude of 4,100 m a.s.l. With an instantaneous field of view of approximately 2 sr and over 95% duty cycle (up time fraction), HAWC is an ideal detector to perform ground based gamma-ray...

162. 4.5-year simultaneous multi-wavelength observation of Mrk 421 in ARGO-YBJ and Fermi overlap era

Silvia Vernetto (Istituto Nazionale di Astrofisica)

03/08/2015, 12:15

GA-EX

Oral contribution

As one of the most active blazars, Mrk421 is an excellent candidate for the study of the physical processes within the jets of AGN. Here we report on the extensive multi-wavelength observations of Mrk 421 over 4.5 years, from 2008 August to 2013 February. This source was simultaneously monitored by several experiments at different wavelengths: the ARGO-YBJ detector at gamma-ray energies above...