cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-oj5h4sz
title: 8860297

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-oja9ezj
title: 8860022

description: This Crab offset staring observation is used to determine the off-axis imaging properties of IBIS and to provide an absolute calibration of  the off-axis PSF.  The off-axis position of the Crab in this staring observation (zenith 10.4 degree azimuth 315. degree)  is defined in the instrumental coordinate system and depends on the start date of the observation. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ojc85qy
title: 0820038

description: We propose a deep 3.0 Msec exposure of the Large Magellanic Cloud in order 1). to detect the flux from SN 1987A in the direct-escape lines of radioactive $^{44}$Ti (lines at 67.9 78.4 and 511 keV) 2). to study possible hard X-ray emission produced by cosmic-rays accelerated in the ejecta blast wave interacting with the ``inner equatorial ring of circumstellar material of SNR 1987A 3) to search for hard emission from the stellar remnant of this supernova (or significantly improve the existing upper limit). In addition we will try to detect an electron-positron annihilation line from the dark bulge of the LMC (testing the hypothesis that the line can be produced in the LMC and in the Galactic center by dark matter annihilation). We will also monitor X-ray variability of a number of compact X-ray sources present in the field and search for new X-ray transients and weak sources.  Observation of the LMC make the best use of the unique INTEGRAL capabilities and undoubtedly are the most efficient investment of its precious observing time. This proposal is a continuation of our proposal approved by TAC in AO-7 (for observations with a 2.0 Msec exposure but there were still no observations carried out to the moment).  Should this proposal be accepted the data will be made available during the proprietary period to scientists of major astrophysical institutions of Russia. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ok59yi6
title: 0420003

description: We request two INTEGRAL observations of 200 ksec each of thebright Seyfert 1.9 galaxy MCG -05-23-16. Previous observations by BeppoSAX showed a complex X-ray spectrum but did not extendsignificantly above 100 keV in order to study the continuum anddetermine the turnover (cut-off) in the hard X-ray band. INTEGRAL offers the unique possibility to study the physicsinvolved in absorbed AGNs and even enables us to study the connectionbetween flux variation high-energy cut-off and iron fluorescenceline. The variation in flux over the time of the observation invarious energy bands can reveal the geometry of this source. The twoseperate observations will most likely catch the source in twodifferent states allowing to further constrain the connection betweenhigh energy spectrum and reprocessing. Analysing all INTEGRALdata covering MCG -05-23-16 even though being at large off-axis angles led to a 9 sigma (20 - 40 keV) detection in ISGRI within 69 ksec ensuring that this source is indeed bright enough to perform detailed spectral studies. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-okpflaf
title: 8860196

description: Crab 2010 special pattern on det corners
DOI: 10.57780/esa-olcakt2
title: 0220089

description: We propose to use INTEGRAL SPI and IBIS to measure gamma-raylines and hard X-ray continua to clarify the mechanismsnucleosynthesis and dynamics of sufficiently nearbysupernovae -- beyond those observations reserved for the coreprogram. These might include important additional observationsof objects that do meet the guaranteed time trigger andobservations of detectable supernovae that do not satisfy thecriterion V < 13. The requested observations vary from single earlytests of a specific question (56Ni near the surface) for relatively distant SN Ia to extensive observations for very nearby events. We define the Target of Opportunity trigger criteria clearly for eachcategory by effectively specifying a complete list of potential hostgalaxies. Although there is a low probability of any of these events ina given year we did acquire data on SN 2003gs which met our criterion in year one. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-oltym83
title: 0770002

description: AGILE detected 3C 454.3 at an extremely high gamma-rayflux level about 1.8E-5 ph/cm2/s on December 3rd asreported in ATel #2326. Subsequently Fermi detected it evenat higher flux about 2.2E-5 ph/cm2/s as reported inATel #2328.3C 454.3 is currently the most intense gamma-ray sourcein the sky much brighter than the Vela pulsar.The response time we request is dictated by the exceptionalityof this event since this is currently the most intense gamma-rayflare form an AGN ever detected.The source is very active also in the optical R band as reportedin ATel #2325 reaching a magnitude of R=14.1.The observations should be performed with the hexagonal ditherpattern in order to obtain a simultaneous coverage below 20 keVwith the JEM-X instrument during the whole observation.We request possibly a single observation 400 ksec longwith no follow-up observations.During a gamma-ray flare in November 2007 we obtainedan INTEGRAL ToO and we published the results inVercellone et al. 2009 ApJ 690 1018. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-onid37i
title: 0770003

description: Crab TOO see ATel 2855
DOI: 10.57780/esa-oo6oipf
title: 1620028

description: As a follow-up of our earlier observations (2 Ms scheduled in AO-1 2.5 Ms in AO-2 2 Ms in AO-3 1.6 Ms in AO-14 1.6 in AO-15 observations in AO-14/15 are still not completed) we propose a new deep 1.6 Msec exposure of the Galactic Center field which corresponds to 15% share time in the total available for this target in AO-16. Observations of the GC region make the best use of the unique INTEGRAL capabilities and undoubtedly are the most efficient investment of its precious observing time. It is important for the study of Galactic diffuse nuclear and positron annihilation lines however the main objectives of the proposed observations are the monitoring of Sgr A* and two dozens of black-hole and many other peculiar X-ray binaries and search for the new transient sources and phenomena. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-oofcw0v
title: 1640023

description: Since early 2016 the IceCube collaboration is promptly distributing alerts of high-energy neutrino detections in order to allow follow-up searches for possible counterparts at the neutrino position. Finding such counterparts would provide important clues on the origin of the high-energy neutrinos and by proxy on the nature of the high-energy cosmic ray accelerators one of the most important and long-standing puzzles of high-energy astrophysics. We ask for pointed ToO observation of the HESE (High Energy Starting Events) and EHE (Extremely High Energy) neutrinos detected by IceCube and reported either in pub-lic or in private GCNs. We will employ the best available knowledge of the INTEGRAL instruments and our expertise in multimessenger transient searches to hunt for a possible hard X-ray and gamma-ray counterparts. In absence of a detection we will set the most stringent upper limits.We intend to promptly communicate the results of our ToOs to the general community thus supporting additional multiwavelength follow-ups and increasing the visibility of the INTEGRAL contribution to the searches of multimessenger transients. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-oox50fl
title: 0470002

description: ToO observations on Anomalous X-ray Pulsar 1E 1048.1-5937.
DOI: 10.57780/esa-opu61k6
title: 8860063

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-opx58ws
title: 8860064

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-oqyg6pp
title: 8860125

description: Crab-2007 Spring: JEM-X VC settings test
DOI: 10.57780/esa-or4wn7z
title: 1570007

description: The accreting millisecond X-ray pulsar SWIFT J1756.9-2508 is currently in outburst and it has been detected by both INTEGRAL and Swift (ATel 11497). Our group just obtained a 50 ks-long XMM DDT observation. We are thus requesting a dedicated short INTEGRAL simultaneous observation to have the possibility of performing a broad-band spectroscopy and studying the profile at high energies with both JEM-X and IBIS/ISGRI. This is a rare opportunity because the source showed so far only 2 outbursts in the past >10 years.  [truncated! Please see actual data for full text]
DOI: 10.57780/esa-otteg76
title: 8860267

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-otu5nbc
title: 8860239

description: Crab 2011: JEM-X Staring rev 1086
DOI: 10.57780/esa-ou47y54
title: 2070011

description: INTEGRAL TOO observations of FRB 20220912A
DOI: 10.57780/esa-ox5cfmr
title: 8860231

description: FSS-STR calibration for rev. 1030
DOI: 10.57780/esa-oxzxaks
title: 8860276

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-oz2ucd7
title: 8860332

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-ozwvlso
title: 1520035

description: The survey of the Galactic Plane has continued as one of the main INTEGRAL scientific objectives because of the scientificpotential of both new source discovery and detailed monitoring of already known sources. We propose for a total of 3.0 Ms of observations in AO14 and 3 Ms in AO15 to continue our Key Program covering areas of the Plane with regular scans every orbit. For these AOs we selected a section of the Plane incorporating 2 sky regions that are rich in galactic sources (HMXB and SFXT in particular) and potential MeV/TeV sources.Our purpose is to regularly monitor known systems as well as to dramatically enhance the chances of discovering new systems or new outbursts from known sources. This program will allow a rapid response to bright events and a detailed study of fainttransients and their long term activity. Such a programme will be of high value to a very large fraction of the high-energyastronomy community stimulating science immediately and furthermore contributing greatly to the INTEGRAL legacy.In order to maximise the engagement of the scientific community we will continue to make the observations publicimmediately. The team will make as it has through AO8-12 and now in AO13 the scw-resolution IBIS and JEM-X lightcurves (in two energy bands) and per revolution mosaic images publicly available through the web as soon as possible afterthe observations have been performed. Any interesting source behaviour that emerges from our observations will beannounced promptly so that rapid follow-up by the community is possible as it has been already demonstrated. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-p3yb5sp
title: 1120027

description: We ask for the continuation of our two year INTEGRAL Key Programme to observe the area of the Galaxy bounded by 20  l  +20 and 15  b  +15 with a total of 2 Msec of observations per AO.  The aim is to study the inner region of the Galaxy namely to continue the search for evidence for gamma-ray flares from Sgr A including following potential brightness changes after the expected impact of a cloud in fall 2013/spring 2014 to continue measuring the flux evolution of Sgr B2 through 2014 to monitor bursts and flares from the many LMXB neutron star sources and to enable significant serendipitous science in the Galactic center region. We do not ask for data rights for any of the sources except for the Galactic Center but will put in seperate data rights proposals on individual sources. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-p4gq98g
title: 8860119

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-p8bb1uz
title: 0399801

description: Galactic Plane Survey for AO 03 and Pattern 01
DOI: 10.57780/esa-p99c1zn
title: 0399923

description: Norma arm Proposal for AO 03 Cycle 2
DOI: 10.57780/esa-pbh823z
title: 8860107

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-pd4iwc7
title: 8860090

description: AOCS Calibration for revolution 385
DOI: 10.57780/esa-pdd0diu
title: 0720039

description: We propose a deep 3.0 Msec exposure of the Large Magellanic Cloud in order to finally detect the flux from SN 1987A in the direct-escape lines of radioactive $^{44}$Ti (lines at 67.9 78.4 and 511 keV) to study the possible hard X-ray emission produced by cosmic-rays accelerated in the ejecta blast wave interacting with the ``inner equatorial ring of circumstellar material of SNR 1987A to search for hard emission from the stellar remnant of this supernova (or significantly improve the existing upper limit). In addition we will try to detect electron-positron annihilation line from the dark bulge of the LMC (testing the hipotesis that it can be produced in the LMC and in the Galactic center by dark matter annihilation). We will also investigate a number of compact X-ray sources present in the field and search for new X-ray sources and transients. Observation of the LMC make the best use of the unique INTEGRAL capabilities and undoubtedly are the most efficient investment of its precious observing time. Should this proposal be accepted the data will be made available during the proprietary period to scientists of major astrophysical institutions of Russia. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pefj5s7
title: 0120118

description: We propose INTEGRAL ToO follow up observations of new Black Hole (BH) X-ray Novae (XN) detected in outburst in the direction of the Galactic Bulge and which are not subject to guaranteed time ToO observations.In the sky region within 10 degrees from the Galactic Center we expect to observe several (at least 2) faint XN in outburst during the first year of the INTEGRAL mission which will probably not fulfill the triggering criteria for Core Program ToO observations. INTEGRAL however thanks to its high sensitivity and angular resolution offer a unique possibility to study these sources since they are mostly far objects which suffer of large absorption in a very confused region of the sky where previous low energy and/or non imaging instruments could not provide detailed results. While part of the outburst may be observed by INTEGRAL during the scan in the GCDE survey a 2 days long pointed INTEGRAL ToO observation planned during the outburst peak in optimum condition of signal to noise will provide a sufficiently detailed spectrum over the 3-700 keV energy band to determine the spectral state of the source and study the relative contribution of ultra-soft reflection and hard components correlating them to variability properties. In particular this observation will allow to search for the rare and variable high energy emission lines of the type of those detected around 500 keV by SIGMA during the peak of Nova Muscae 1991 in a sample of XN larger than the one covered by the Core Program. We will also carry out correlated multiwavelength observations with ground based observatories which will provide radio/optical data essential to the astrophysical interpretation of the high energy results and in specific we will search for correlation between radio emission and line features. Our ToO observations will optimize the observing strategy of INTEGRAL for the study of BH binaries and thus the scientific return of the miss [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pf6pqmj
title: 0820033

description: We propose to observe Her~X-1 during INTEGRALs AO-8 for a total observingtime of 600 ksec: covering one Main-On with two  INTEGRAL orbitsthe first near the maximum of the Main-On the second during its decay plus oneINTEGRAL}orbit during the following Short-On. Our prime objectives are tosystematically  measure the centroid energy of the fundamental cyclotron lineE_cyc as a function of time X-ray flux 35 day phase and 1.24 s phaseand to study the variation of the shape of the pulse profile with 35 day phase.These observations will contribute to answering the following questions: Is there a slow seculardecrease in the value of E_cyc with time? Does E_cyc depend on 35 day phase?How stable is the positive correlation of the value of E_cyc with the X-ray luminosity?Does the neutron star itself really show precession?The results will yield infomation about fundamental physics in this disk-accreting binary pulsarwith respect to: the structure of the magnetic field at the polar caps the physics of sub-Eddingtonaccretion the generation of spectra and pulse profiles. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pfj9d4z
title: 0470001

description: We request an INTEGRAL ToO on Anomalous X-ray Pulsar (AXP) 4U 0142+61now that it is has exhibited an large burst with characteristics of aSoft Gamma-ray Repeater giant flare. This large burst has beenobserved in RXTE monitoring data (Gavriil et al 2007  Atel 993) andshows a bright brief peak (peak flux 4E-8 erg/s/cm2 2-60 keV) and along (20--30 mins) tail where the pulsars oscillations arevisible. The burst profile (not the fluence) resembles the SGR giantflare of SGR 1806-20 of December 27 2004 (e.g. Borkowski et al 2006GCN 2920 Palmer et al 2006 Hurley et al 2006). Such a burst hasnever been observed for an AXP before. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pgnl8mp
title: 0720018

description: ABRIDGED: We propose to continue on observational program dedicated to confirming a distinct and unexpected asymmetry in the 511 keV line emission emanating from the inner Galactic disk that was reported by Weidenspointner et al. 2008. For AO-6 a first fraction of the required 4.1 Ms of observation time has already been granted  here we request the time that remains unobserved after AO-6 (about 2.4 Ms) to complete the proposed program. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-ph0wrrr
title: 1770007

description: INTEGRAL observations of SN 2018cow for testing of Z-flip strategies
DOI: 10.57780/esa-plmqag3
title: 0399810

description: Galactic Plane Survey for AO 03 and Pattern 10
DOI: 10.57780/esa-plpv69c
title: 0720012

description: We propose to observe Her~X-1 during 	extsl{INTEGRALs} AO-7 for a total observing time of 	extbf{~600ksec}: covering one ``Main-On with three INTEGRAL orbits the first near  the early maximum and the next two during the decay of the ``Main-On.  Our prime objectives are to systematically measure the centroid  	extbf{energy of the fundamental cyclotron line}  $E_{cyc}$ as a function  of 	extbf{time X-ray flux 35day phase and 1.24s phase}. Such a dedicated systematic study  will yield information  about 	extbf{fundamental physics} in this accreting binary pulsar with  respect to: the structure of the 	extbf{magnetic field} at the polar caps  the physics of 	extbf{sub-Eddington accretion} the generation of	extbf{pulse profiles} and variation of $E_{cyc}$ with pulse phase. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pmah70r
title: 0120121

description: The physical connection between active galactic nuclei (AGN) and black hole X-ray binaries (BHXRBs) implied by their similar X-ray spectra is further confirmed by variability studies of AGN using the power spectrum.  AGN power spectra appear to be identical in shape and RMS amplitude to BHXRB power spectra except scaled down in frequency by the black hole mass.  It has been previously assumed that AGN are comparable to BHXRBs in the low accretion state.  However our power-spectral study of the Seyfert galaxy NGC5506 using more than 4 years of RXTE monitoring data suggests that this is a high state source.  The energy spectra of low state BHXRBs have spectral cut-offs from 100-300 keV but no spectral cut-off in the high state (suggesting a significant population of non-thermal electrons in the Comptonising medium).  We propose to exploit the difference in hard X-ray spectral shape in the low and high states to probe the BHXRB-AGN connection at high energies and test the hypothesis that the power spectrum of AGN is a good predictor of the energy spectrum.  We will search for and constrain the presence of high energy cut-offs in the hard X-ray spectra of NGC5506 and the Seyfert galaxy NGC3516 which has a low state power spectrum.  If the electron temperature distribution in AGN and BHXRBs is the same in both low and high states we will be able to measure a high energy cut-off in NGC3516 and set a stringent lower limit of 700 keV on any cut-off in NGC5506.  [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pp6evb8
title: 1570010

description: INTEGRAL TOO observations of AT2018cow/ATLAS18qqn
DOI: 10.57780/esa-pq2n5pa
title: 1520001

description: The Galactic bulge region is a rich host of variable X-ray and gamma-ray point sources. Since AO-3 we are monitoring about 190 of them with one hexagonal pattern about every 3 days whenever the region is visible by INTEGRAL. Due to the high scientific return and in order to preserve the continuity with respect to past observations of this ever-changing region we propose to continue our successful program. Our main aim is to monitor and actively report on any (transient) activity  in the long run the program is providing regular and homogeneous inputs about the soft and hard-X-ray (transient) population as well as on the accretion regimes in the various types of binary systems. As a service to the scientific community the observations are to be made public. We will continue to make the IBIS/ISGRI and JEM-X quick-look results publicly available through the web soon after the data have been taken to preserve the possibility for rapid follow-up by the community. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pqdvo5d
title: 1520038

description: As a follow-up of our earlier observations (2 Ms in AO-1 2.5 Ms in AO-2 2 Ms in AO-3 and 1.6 Ms in AO-14) we propose a new deep 1.6 Msec exposure of the Galactic Center field which corresponds to 15% share time in the total available for this target in AO-15. Observations of the GC region make the best use of the unique INTEGRAL capabilities and undoubtedly are the most efficient investment of its precious observing time. It is important for the study of Galactic diffuse nuclear and positron annihilation lines however the main objectives of the proposed observations are the monitoring of Sgr A* and two dozens of black-hole and many other peculiar X-ray binaries and search for the new transient sources and phenomena. [truncated! Please see actual data for full text]
DOI: 10.57780/esa-pqxwm5y
title: 8860295

description: OMC FF sequence ISOC V10 onwards: sequence of ff measurements with LED on/off followed by a DC cal.
DOI: 10.57780/esa-pqy8dwu
title: 0299848

description: Galactic Plane Survey for AO 02 and Pattern 48
DOI: 10.57780/esa-psk7qjy
title: 0399931

description: Galactic Centre proposal for AO-3 cycle 3