The INTEGRAL experiment

Lavigne, J. M.; Jean, P.; Kandel, B.; Borrel, V.; Roques, J. P.; Lichti, G.; Schönfelder, V.; Diehl, R.; Georgii, R.; Kirchner, T.; Durouchoux, Ph.; Cordier, B.; Diallo, N.; Sánchez, F.; Payne, B.; Leleux, Pierre; Caraveo, P. A.; Teegarden, B. J.; Matteson, J. L.; Slassi-Sennou, S.; Skinner, G. K.; Connell, P.

doi:10.1016/s0920-5632(97)00502-1

Cited by 6 publications

(2 citation statements)

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“…1). The main goal is the prompt followup of GRB discovered by space-based observatories like the Neil Gehrels Swift Observatory or INTEGRAL [35]. The development phase has exploited the great experience our group has gained since our first observations with the LCO network in 2014: a brief history of our proposals on the LCO network is reported in Table 2.…”

Section: Our Grb-driven Proposalsmentioning

confidence: 99%

A robotic pipeline for fast GRB followup with the Las Cumbrés observatory network

et al. 2019

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In the era of multi-messenger astronomy the exploration of the early emission from transients is key for understanding the encoded physics. At the same time, current generation networks of fully-robotic telescopes provide new opportunities in terms of fast followup and sky coverage. This work describes our pipeline designed for robotic optical followup of gamma-ray bursts with the Las Cumbrés Observatory network. We designed a Python code to promptly submit observation requests to the Las Cumbrés Observatory network within 3 minutes of the receipt of the socket notice. Via Telegram the pipeline keeps the users informed, allowing them to take control upon request. Our group was able to track the early phases of the evolution of the optical output from gamma-ray bursts with a fully-robotic procedure and here we report the case of GRB180720B as an example. The developed pipeline represent a key ingredient for any reliable and rapid (minutes timescale) robotic telescope system. While successfully utilized and adapted for LCO, it can also be adapted to any other robotic facilities.

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Section: Our Grb-driven Proposalsmentioning

confidence: 99%

A robotic pipeline for fast GRB followup with the Las Cumbrés observatory network

et al. 2019

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“…Given their long life time, MSPs constitute a promising source for the Galactic γ ray flux, although many objections have been put forth against this scenario. Haggard et al (2017) argued that if the observed gamma-ray flux is only due to MSPs, they should have observed ∼1000 LMXBs within 10deg from the Galactic centre (∼ 1.4 kpc @ 8 kpc), but only ∼ 40 − 80 LMXBs have been observed there with INTEGRAL (Lavigne et al 1998). The MSP scenario thus requires that most LMXB activity, and hence MSP creation, ceased long ago.…”

Section: Controversy Of the Msp Origin Of The Fermi Excessmentioning

confidence: 99%

Gamma-ray and X-ray emission from the Galactic centre: hints on the nuclear star cluster formation history

Sedda

Kocsis

Brandt

2018

Monthly Notices of the Royal Astronomical Society

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The Milky Way centre exhibits an intense flux in the gamma and X-ray bands, whose origin is partly ascribed to the possible presence of a large population of millisecond pulsars (MSPs) and cataclysmic variables (CVs), respectively. However, the number of sources required to generate such an excess is much larger than what is expected from in situ star formation and evolution, opening a series of questions about the formation history of the Galactic nucleus. In this paper we make use of direct Nbody simulations to investigate whether these sources could have been brought to the Galactic centre by a population of star clusters that underwent orbital decay and formed the Galactic nuclear star cluster (NSC). Our results suggest that the gamma ray emission is compatible with a population of MSPs that were mass segregated in their parent clusters, while the X-ray emission is consistent with a population of CVs born via dynamical interactions in dense star clusters. Combining observations with our modelling, we explore how the observed γ ray flux can be related to different NSC formation scenarios. Finally, we show that the high-energy emission coming from the galactic central regions can be used to detect black holes heavier than 10 5 M ⊙ in nearby dwarf galaxies.

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Induced radioactive continuum background in the integral spectrometer (SPI) germanium detectors

Diallo

Jean

Légrain

et al. 2000

Nuclear Instruments and Methods in Physics Research Section A:

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The INTEGRAL experiment

Cited by 6 publications

References 0 publications

A robotic pipeline for fast GRB followup with the Las Cumbrés observatory network

A robotic pipeline for fast GRB followup with the Las Cumbrés observatory network

Gamma-ray and X-ray emission from the Galactic centre: hints on the nuclear star cluster formation history

Induced radioactive continuum background in the integral spectrometer (SPI) germanium detectors

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