The objective of this proposal is to study the extent of diffuse emission from positron annihilation and the decay of Al-26 in our Galaxy by creating deeper and more uniform exposure maps at medium Galactic latitudes. We ask that INTEGRAL devote 2 Ms in AO16 and 2 Ms in AO17 to observing mid-latitude regions of the Inner Galaxy that are underexposed compared with regions near the Plane. The survey regions are bounded by Galactic longitude and latitude -70 deg < l < 70 deg and 7 deg < b < 33 deg. Around 10%-50% of this survey area has 100-500 ks of exposure time at present. In these regions, the proposed observations will add a minimum of 200 ks per AO which, after two observing cycles, represents an increase in exposure time of > 50%-100% compared with archival data. This proposal will build a legacy dataset that is of interest to a wide community of scientists given the variety of sources present and given how the new data complements ongoing surveys of the Galactic Plane, Bulge, and Center.
A search for period changes of eight short-period Type II Cepheids - Yacob, Alemiye M., Berdnikov, Leonid N.,Pastukhova, Elena N.,Kniazev, Alexei Y.,Whitelock, Patricia A. (2022-10-01) http://ui.adsabs.harvard.edu/#abs/2022MNRAS.516.2095Y
Observation of the Second LIGO/Virgo Event Connected with a Binary Neutron Star Merger S190425z in the Gamma-Ray Range - Pozanenko, A. S., Minaev, P. Yu.,Grebenev, S. A.,Chelovekov, I. V. (2020-02-01) http://ui.adsabs.harvard.edu/#abs/2020AstL...45..710P
Primordial black hole dark matter in the context of extra dimensions - Friedlander, Avi, Mack, Katherine J.,Schon, Sarah,Song, Ningqiang,Vincent, Aaron C. (2022-05-01) http://ui.adsabs.harvard.edu/#abs/2022PhRvD.105j3508F
26Al gamma rays from the Galaxy with INTEGRAL/SPI - Pleintinger, Moritz M. M., Diehl, Roland,Siegert, Thomas,Greiner, Jochen,Krause, Martin G. H. (2023-04-01) http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..53P
Temporal Coverage
2019-04-24T12:38:50Z / 2019-12-29T01:36:26Z
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.
European Space Agency, Bodaghee, 2025, 'TIMELESS: The INTEGRAL Medium-Latitude Sky Survey', 1.0, European Space Agency, https://doi.org/10.57780/esa-a18cj4a
