Whereas supermassive black holes (SMBHs) are found in essentially every galacticbulge, very few SMBHs are known in purely bulgeless galaxies. Identifying such apopulation is crucial to our understanding of the origins of SMBHs and thesecular pathways for their growth. However, to date, there are only a handful ofconfirmed SMBHs in purely bulgeless galaxies known in the Universe. We haveidentified a population of bulgeless galaxies that display extreme redmid-infrared colors thus far exclusively associated in extragalactic sourceswith powerful AGNs and hidden broad line in several targets, despite showing noevidence for accretion activity. We request XMM observations to confirm the AGNsanddetermine their luminosites.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-05-26T18:44:07Z/2021-07-24T11:28:47Z
Version
19.16_20210326_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr Shobita Satyapal, 2022, 'HIDDEN BROAD LINES IN BULGELESS GALAXIES AnXMM-NewtonFollow-up', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-7jjwf04
