A dataset provided by the European Space Agency

Proposal ID 0120039
Obs ID 01200390001, 01200390002
Title Exposing the Binary Heart of eta-Carinae with Gamma-Rays
Download Data Associated to the proposal https://isla.esac.esa.int/tap/download/bundle?format=ascii_curl&product_id=prop_id:0120039
DOI https://doi.org/10.57780/esa-gae296a
Author Butt
Abstract Our observations with ROSAT, ASCA, RXTE, Beppo-SAX, & CHANDRA, along with information from near-IR & Radio, all suggest that the super-luminous & super-massive star eta-Carinae may be, in fact, a 5.52 yr period eccentric binary system. The spatial resolution of IBIS affords us to separate gamma-rays from other sources in the rich Carina field, for the FIRST time ever, and examine directly the heart of eta-Carinae. Gamma-ray observations of eta-Carinae will severely test the binary hypothesis for this object, which predicts a DECREASED x-ray, but ENHANCED gamma-ray luminosity just after the putative periastron in 2003.47 (for which we will be requesting a fixed time AO2 observation). In order to correctly interpret those data, and to understand the nature of eta-Carinae in its normal state, we propose an unconstrained observation in this AO. The simultaneous & cross-calibrated data from the twin JEM-Xs and IBIS will suit our science aims perfectly. The large 17degx17deg fully coded, dithered, IBIS field will also allow us to:1. Identify/Verify 5 EGRET sources in the extended field.IBIS2. Examine timing of the bright Anomalous X-ray Pulsar 1E1048.1-5937. JEM-X/IBIS3. Twenty Radio supernova remnants (SNRs) will be in the extended IBIS field; Sixteen for JEM-Xs. Eight have no identified x-ray counter-parts. Detection of hard x-ray non-thermal emission could be made. JEM-X,IBIS4. The 511 keV line may be detected and mapped; cold-cloud/warm cloud shapes couldbe compared -- the 3.5 degree scale of the extended Carina cloud complex is well suited to SPIs 2.5deg resolutionSPI5. Cross-correlate our measured CO(J=4-->3) 460 GHz hot spots, with hard x-ray/gamma-ray hot-spots viewed by JEM-X/IBIS/SPI.6. Off-pointed dither fields will provide information on the soft-gamma background.7. Off-pointed dither fields will probe the Carina Flare Super-shell.
Publications
Temporal Coverage 2003-06-24T18:54:31Z / 2003-07-04T21:40:30Z
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 2025-03-25T09:54:29Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Butt, 2025, 'Exposing the Binary Heart of eta-Carinae\n with Gamma-Rays', 1.0, European Space Agency, https://doi.org/10.57780/esa-gae296a