Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract
The neutron star X-ray binary Aql X-1 shows quasi-periodic outbursts about once a year. These active states are relatively well covered in optical/infrared and X-ray domains. In contrast, at radio wavelengths the observations are very scarce (IAUC # 5112 ; ATEL #286; ATEL #491).