SUBARCSECOND LOCATION OF IGR J17480-2446 WITH ROSSI XTE
- INAF-Osservatorio Astronomico di Cagliari, localita Poggio dei Pini, Strada 54, 09012 Capoterra (Italy)
- Dipartimento di Fisica, Universita di Cagliari, SP Monserrato-Sestu km 0,7, 09042 Monserrato (Canada) (Italy)
- Dipartimento di Fisica, Universita di Palermo, Via Archirafi 36, Palermo 90123 (Italy)
- Institut de Ciencies de lEspai (IEEC-CSIC), Campus UAB, Fac. de Ciencies, Torre C5, parell, 2a planta, 08193 Barcelona (Spain)
- INAF-Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (Italy)
- CRS4-Center for Advanced Studies, Research and Development in Sardinia, Loc. Piscina Manna, Edificio 1, 09010 Pula (Italy)
On 2010 October 13, the X-ray astronomical satellite Rossi XTE, during the observation of the newly discovered accretion powered X-ray pulsar IGR J17480-2446, detected a lunar occultation of the source. From knowledge of the lunar topography and Earth, Moon, and spacecraft ephemerides at the epoch of the event, we determined the source position with an accuracy of 40 mas (1{sigma} c.l.), which is interesting, given the very poor imaging capabilities of RXTE ({approx}1 Degree-Sign ). For the first time, using a non-imaging X-ray observatory, the position of an X-ray source with a subarcsecond accuracy is derived, demonstrating the neat capabilities of a technique that can be fruitfully applied to current and future X-ray missions.
- OSTI ID:
- 22047658
- Journal Information:
- Astrophysical Journal Letters, Vol. 754, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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