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INTEGRAL

Max-Planck-Institut für extraterrestrische PhysikMPE

- Gamma-Ray Astronomy -

Project:   INTEGRAL
Science from INTEGRAL (
collected&selected by RD/MPE)


 

  MPE MPE   Group Gamma-Ray Astronomy   Group Projects   Group INTEGRAL  Group Science

...more INTEGRAL Science 

ESA News for general Public

ESA INTEGRAL News Archive

Various Press Releases



INTEGRAL Spectrometer Status
 MPE's Notes

CESR Notes


Impressum

INTEGRAL Science Chronologyscience

(RD selected science highlights, latest on top; for other highlights/selections see ESA and press release links)
  • The INTEGRAL Science Workshop in Dublin, Ireland, attracts nearly 300 scientists, with stimulating discussions of results among various high-energy missions world-wide (30Sep2010)
  • SPI refines its findings on positron annihilation emission in the inner Galaxy, clearly confirming disk emission at a low level and shallow spatial distribution, and deviations from perfectly-GC-centered emission of the bright bulge (26Sep2010)
  • SPI publishes 26Al spectra Doppler Shifts along the inner Galaxy (INTEGRAL picture of the month Oct2010) (20Sep2010)
  • SPI finds 26Al emission from nearby nucleosynthesis of the Scorpius-Centaurus region (23Feb2010)
  • SPI publishes 26Al spectra for different regions along the plane of the Galaxy (INTEGRAL picture of the month Jun2009) (29Jan2009)
  • SPI on INTEGRAL monitors a flood of outbursts from an AXP/Magnetar (1E1547.0, neutron star with soft X-ray spectrum) which FERMI/GBM had seen to burst already last October. ToO for INTEGRAL will be made on 24Jan (22Jan2009)
  • The INTEGRAL Science Workshop in Copenhagen/Denmark, focussed on 'compact objects', attracts over 150 scientists, and features broad science discussions reaching well beyond the INTEGRAL community. (14Sep2008)
  • Polarized emission from the Crab (see note from Oct 2007 below) is published in 'Science' (ESA Press Release)(29Aug2008)
  • INTEGRAL schedules a ToO for a Soft Gamma-Ray Repeater / Magnetar, discovered with the GBM on the recently-launched Fermi gamma-ray mission (26Aug2008)
  • INTEGRAL schedules a ToO for a rather nearby supernova, SN2008S, probably a type IIn, at 3.8 Mpc distance (4Feb2008)
  • Positron annihilation in the Galaxy's disk appears asymmetric, brighter in the 4th quadrant, and indicating positron origins in binaries (Weidenspointner et al., 2007)(Press Release 10Jan2008)(04Oct2007)
  • IBIS\INTEGRAL surveys the Galaxy's cosmic neighborhood, finding an anisotropy reminiscent of that seen in AUGER's proof of the extragalactic origin of highest-energy cosmic-rays (Krivonos et al. 2007)(ESA Press Release)(17Dec2007)
  • INTEGRAL schedules its first ToO based on an AGILE trigger (Outburst of AGN 3C454.3)(16Nov2007)
  • INTEGRAL "Lustrum" Science workshop in Sardinia celebrated 5 years of INTEGRAL with 72 talks and 26 posters in a 3-day meeting with ~130 participants (ESA Press Release)(19Oct2007)
  • Crab off-pulse polarization (angle ~120deg) now clearly measured with SPI (Dean et al.) and IBIS Compton mode (Grenier et al.)(19Oct2007)
  • INTEGRAL sees ist so far most distant source, and AGN named IGR J22517+2218 at redshift 3.66 (ESA Press Release)(Bassani et al. 2007)(03Oct2007)
  • AGN spectra are found consistent with the X-ray background spectrum, with a high-energy cutoff in their spectra at 100-200 keV and strong AGN luminosity evolution between redshifts 0 and 1 (IBIS analysis; Sazonov et al. 2007)(23Aug2007)
  • The 3rd IBIS source catalogue finds 421 sources, among them unexpected CVs, many AGN populating locations of nearby galaxy clusters, and a rich variety of accreting binaries with neutron stars or black holes as compact components (ESA press release)(Bird et al. 2007)
  • Inner-Galaxy monitoring finds relatively-low central black-hole (SgrA) and binary activity, which allows to constrain the population of fainter accreting binaries (Kuulkers et al. 2007; ESA press release)(18Jan2007)
  • GRB061122 detected 7 deg off axis (22Nov2006)
  • Cyg X-1 outburst at 2*I(Crab) in soft-hard state (Tuerler et al. 2006)(05Oct2006)
  • Evidence for Crab polarization-state correlations between gamma-rays (SPI) and optical (Willis et al. 2006)(01Aug2006)
  • Xray Binary spectra (LMXBs) show hard tails from blackbody emission, Comptonized by magnetospheric electrons (Paizis et al. 2006)(26Jul2006)
  • Clear (5sigma) detection of both 60Fe lines from the Galaxy with SPI (Wang et al. 2007) (Picture of Jun07)(03Jul06)
  • Detection of both 44Ti low-energy lines with IBIS (Renaud et al. 2006) (29Jun06)
  • Determination of AGN luminosity function, showing that AGN contribute only at the percent level to total background at 20-50 keV, and that obscured AGN are a minor population (Beckmann et al. 2006; see also Sazonov et al. 2006, Bassani et al. 2006, Bazzano et al. 2006, Bird et al. 2006) (28Jun06)
  • Detection of a GRB from 'the backside' of INTEGRAL with IBIS (Marcinkowski et al. 2006) (press release)(POM) (16Jun2006)
  • Identification of IBIS-detected absorbed-source AXJ1838-0655 with HESS source J1837-069, suggestive of a cosmic particle accelerator (SNR/PWN?); similarly, INTEGRAL IGR18135-1751 coincides with HESS J1813-178, also seen by MAGIC, and likely a SNR accelerating cosmic rays. Issue: electrons or hadrons? (Molkov et al. 2004; Bird et al. 2006) (10May2006)
  • Anomalous X-ray pulsars (AXPs) identified as high-magnetic field neutron stars, related to soft gamma-ray repeaters (denHartog et al. 2006, POM) (20Mar2006)
  • Earth observations clearly detect the cosmic diffuse X-ray background with SPI and IBIS (POM_Jun06)(POM_May06)(ESA Press Release Sep06)(Churazov et al. 2006)(25Jan2006)
  • Publication of 26Al Diffuse-Emission Results: Line width constraint, signature of Galactic rotation (POM)(Diehl et al. 2006)(05Jan2006)
  • Detection of new class of high-mass and rapidly-variable X-ray Binaries (POM)(Negueruela 2005)(02Nov2005)
  • Non-detection of 44Ti lines from Cas A with SPI rules out 44Ti velocities <1000 km/s (Vink 2005) (18Jul2005)
  • First AGN catalogue from INTEGRAL (Beckmann et al. 2005)(08Jul2005)
  • Second soft gamma-ray source catalogue released (Bird et al. 2005)(05Jul2005)
  • Positron annihilation from Positronium continuum confirms 511 keV line results (Weidenspointner et al. 2005) (21Jun2005)
  • Diffuse Galactic Emission analyzed for source contributions: low-energy part dominated by typical X-ray sources, high-energy part with singificant-to-dominating contribution of a new source population (Lebrun et al. 2005; Bouchet et al. 2005; Strong et al. 2005) (15Jun2005)
  • New discoveries by HESS of cosmic-ray acceleration signs in / near supernova remnants: INTEGRAL/IBIS detection of these same sources (Ubertini et al. 2005) (15Jun2005)
  • Diffuse 26Al emission from inner Galaxy: 26Al nuclei found to have low velocity as typical for ISM; detection of Doppler shift signature as expected from Galactic rotation (Diehl et al. 2005) (15Jun2005)
  • Galactic Center region sources imaging: new source near GC detected (Belanger et al. 2005)(21May2005)
  • State change and flaring activity in Cyg-X1-like BH binary JGR17464 (Joinet et al. 2005) (10Mar2005)
  • Cyg X-1 BH accretion seen in intermediate state, variability analyzed (Cadolle-Bel et al. 2005, Malzac et al. 2005) (10Mar2005)
  • Blazar 3C454 outburst detected with INTEGRAL (Pian et al. 2006) (15Feb06)
  • Cyclotron lines most clearly seen in transient X-ray pulsar X00115+63 (Santangelo et al. 2005) (21Jan2005)
  • Giant outburst of magnetar SGR1806 on 27 Dec 2004: First reported from SPI-ACS detectors (GCN 2920ff; MPE report (in german)) (21Jan2005)
  • Absence of 44Ti emission from SNR Tycho rules out sub-Ch model for this case (Renaud et al. 2005)(18Jan2005)
  • 44Ti emission from Cas A SNR is confirmed with IBIS (Vink et al. 2005) (18Jan2005)
  • Radioactive 60Fe: Now seen with SPI (Internal INTEGRAL Workshop at ESTEC; Harris et al. A&A 2005) (18Jan2005)
  • Positron annihilation measurements confirm symmetric bulge-like extended emission in inner Galaxy with a weak disk component; annihilation must occur in warm partly-ionized ISM (Jean et al. 2005; Churazov et al. 2005; Knödlseder et al. 2005) (18Jan2005)
  • Mapping of X-ray binaries in Galaxy confirms HMXB origin in star-forming regions, and LMXB origin in old stellar population (Lutovinov et al. 2004) (11Nov2004)
  • Cyclotron lines seen in Nov-Jan outburst from Be-X-ray binary V0332+53 (Kreykenbohm et al. 2005) (26Dec2004) 
  • Rapid GRB followups on INTEGRAL's GRB041219 detection allow prompt burst discovery also in IR (Hanlon et al. 2005) (Jan2005)
  • Fastest-rotating X-ray pulsar: Discovered JGR 00291+5934 as millisecond pulsar with 1.67 ms periodicity (Eckert et al. ATel 352; Falanga et al. A&A 2005) (02Dec2004)
  • 26Al emission from Cygnus region indicates young massive star cluster origin, from slightly broadened line (Knödlseder et al. 2004) (11Feb2004)
  • 44Ti emission from candidate young SNR in Vela region is not confirmed by INTEGRAL (vonKienlin et al. 2004) (11Feb2004)
  • Closest and underluminous Gamma-Ray Burst GRB031203 detected (z~0.3), associated with SN (Sazonov et al. 2004) (05Aug2004)
  • Diffuse emission in the innner Galaxy is confirmed in SPI surveys (yet not understood), in spite of an unexpectedly-large population of hard X-ray point sources discovered with ISGRI (Lebrun et al. 2004; Strong et al. 2004)(17Mar2004)
  • A gamma-ray burst occurs within INTEGRAL's field of view (GRB031203); INTEGRAL's alert and results stimulated  follow-up studies on its optical counterpart after its finding (05Dec2003)
  • 26Al emission from inner Galaxy does not confirm ~550 km/s high-velocity line reported earlier (Diehl et al. 2003) (11Nov2003) 
  • Positron annihilation emission from inner Galaxy appears as extended, bulge-like emission (Jean et al. 2003) (17Sep2003; 10Nov2003)
  • New hard-X-ray sources are discovered with INTEGRAL, which appear embedded in molecular clouds, e.g. IGR J16318-4848, opening up broader research on stellar-mass black holes  (Walter et al. 2003) (10Apr2003,17Oct2003)
  • First GRBs rapidly located with INTEGRAL/IBAS, specifically GRB021219 (Mereghetti et al. GCNs 1706 ff) (20Dec2002)


INTEGRAL Mission Notes & News

SPI Instrument Performance Notes & Newsthe SPI instrument



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