A dataset provided by the European Space Agency

Proposal ID 0920018
Obs ID 09200180001, 09200180002, 09200180003
Title CONTINUING MONITORING OF NGC 4151
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0920018
DOI https://doi.org/10.57780/esa-au127pf
Author Zdziarski
Abstract We propose to continue the monitoring of the X-ray brightest Seyfert galaxy NGC 4151 with integral, in order to measure its spectra as a function of the hard X-ray flux level. We will correlate the high energy spectral cutoff with other continuum parameters to determine the main physical mechanism driving the variability. We will also disentangle the contributions to the reflection hump from close and distant reflectors, and correlate those with the narrow iron line variability to determine the nature of the thick reprocessing medium and the geometry of cold matter surrounding the source. We will finally probe for the existence of a hard non-thermal tail. We request four observations of 200 ks each, for which we will propose three 10 ks accompanying XMM-Newton observations.
Publications
Temporal Coverage 2012-05-13T03:00:58Z / 2012-12-11T03:21:10Z
Version 1.0
Mission Description The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
Creator Contact https://www.cosmos.esa.int/web/integral/helpdesk
Date Published 2025-03-25T09:54:36Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Zdziarski, 2025, 'CONTINUING MONITORING OF NGC 4151', 1.0, European Space Agency, https://doi.org/10.57780/esa-au127pf