On 20-21 October 2005, the remaining six Chandra/HRC-I observations (as mentioned in ATEL #637) were performed as part of the XMM-Newton/ Chandra monitoring...
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PublicaciónFurther Chandra observations of SAX J1747.0-2853 and the region around Sgr A*
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PublicaciónImproved position of the new X-ray transient XTE J1637-498
Following the discovery of the new X-ray transient XTE J1637-498 (Atel #1699), we obtained a short (nearly 1 ksec) observation using the Swift/XRT in PC mode on...
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PublicaciónIndirect evidence for an active radio pulsar in SAX J1808.4-3658 during quiescence
Millisecond radio pulsars are neutron stars that have been spun-up by the transfer of angular momentum during the low-mass X-ray binary phase. The transition...
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NoticiaLa erupción de una estrella de neutrones revela la naturaleza de fenómenos solo observados en agujeros negros
Un equipo científico internacional, liderado por el Instituto de Astrofísica de Canarias (IAC), ha encontrado una estrella de neutrones que roba materia a una...
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PublicaciónLi abundances in late-type companions to neutron stars and black hole candidates
Following our recent report of a strong Li lambda 6708 resonance line in the secondary of the black hole candidate V404 Cyg, we present here its detection in...
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PublicaciónM31GC J004234+405709 (Bol 117) Observed by Chandra Is a New Transient X-Ray Source in M31: CXOM31 J004234.2+405709
In ATel #1815 we erroneously associated the globular cluster M31GC J004234+405709 (Bol 117) with object s1-1 from Williams et al. (2006, ApJ 643, 356). Bol 117...
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CharlaMatter under extreme conditions and Heavy Ion Colliders
According to Quantum Chromodynamics, which is the well established theory of strong interactions, quark and gluons are forced to live inside hadrons because of...
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PublicaciónMini-outburst of Aql X-1
We report YALO consortium observation of a mini-outburst of Aquila X-1 = V1333 Aql, which occurred between July 04.27 and 07.29 UT. This X-ray binary outbursts...
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PublicaciónMultiwavelength observations of XTE J1859+226
On March 2 06:00 UT the transient source XTE J1859+226 had faded considerably to R=18.0 in the optical (IAC) and to a flux of about 13 mCrab (RXTE ASM). However...