Older GCN Circulars Archive

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(Listed in reverse serial number order -- newest first: 399 - 300)

• 399 GRB990806 Optical observations
  
• 398 Optical Observations of GRB990806
  
• 397 GRB990806, Optical Observations
  
• 396 GRB990806, optical observations
  
• 395 GRB990806, Optical Observations
  
• 394 GRB990806 UBVRIJHK observations
  
• 393 GRB990806: possible X-ray afterglow, BeppoSAX
  
• 392 BeppoSAX ALERT GRB990806: Summer GRB
  
• 391 GRB990712 Optical Observations
  
• 390 GRB990705: No Evidence for Neutrino Signal
  
• 389 GRB990712 Optical Decay: Indication of Bright Host Galaxy
  
• 388 VLT spectrum of GRB990712
  
• 387 GRB990712
  
• 386 Late-time HST/STIS Observations of GRB990510
  
• 385 Refined BeppoSAX-WFC position of GRB990712
  
• 384 BeppoSAX NFI Observation of GRB990705
  
• 383 BeppoSAX NFI Observation of GRB990705
  
• 382 Updated Astrometry for the IR Counterpart of GRB990705
  
• 381 GRB990705, R-band observations
  
• 380 Updated IPN localization of GRB990705
  
• 379 IPN localization of GRB990704
  
• 378 IPN localization of GRB990705
  
• 377 Infrared and Optical Observations of GRB990705
  
• 376 GRB990705, radio observations
  
• 375 GRB990704: SAX-NFI results summary
  
• 374 GRB990704 radio and optical observations
  
• 373 BeppoSAX GRB990705: possible X-ray afterglow
  
• 372 GRB990704 X-ray Observations
  
• 371 GRB990704 Optical Observations
  
• 370 GRB990704, optical observations
  
• 369 GRB990704
  
• 368 GRB990705: Intriguing Positional Coincidences
  
• 367 GRB990704
  
• 366 Refined BeppoSAX-WFC position of GRB990704: Errata Corrige
  
• 365 GRB990704, optical observations
  
• 364 GRB990704: possible X-ray afterglow
  
• 363 Identification of a possible optical counterpart for GRB990704
  
• 362 GRB990704
  
• 361 Refined BeppoSAX-WFC position of GRB990704
  
• 360 GRB990704: BeppoSAX detection
  
• 359 BeppoSAX NFI Observation of GRB990627 X-ray afterglow
  
• 358 Optical Observations of GRB990627
  
• 357 GRB 990627, radio observations
  
• 356 GRB990627: BeppoSAX-WFC final location
  
• 355 BeppoSAX: GRB990625
  
• 354 Late-time HST/STIS Observation of GRB 990123
  
• 353 GRB 990506 - clarification to GCN 352
  
• 352 GRB 990506 - Optical Observations
  
• 351 Optical Observations of GRB 990506
  
• 350 GRB 990506 Radio Transient
  
• 349 GRB990527 Optical Observations
  
• 348 X-ray/GRB 1SAX J0835.9+5118, Optical Observation
  
• 347 IPN error box for GRB990527
  
• 346 Late Afterglows of GRBs 990510, 990123
  
• 345 X-ray/GRB 1SAX J0835.9+5118, TNG V and R observations
  
• 344 X-ray/GRB 1SAX J0835.9+5118, BATSE Observation
  
• 343 X-ray/GRB 1SAX J0835.9+5118, Optical Observations
  
• 342 GRB990506, Optical observation
  
• 341 X-ray/GRB 1SAX J0835.9+5118, Optical Observation
  
• 340 X-ray/GRB 1SAX J0835.9+5118, Optical Observation
  
• 339 X-ray/GRB 1SAX J0835.9+5118, Optical Observation
  
• 338 X-ray/GRB 1SAX J0835.9+5118, Optical Observation
  
• 337 Radio observations of X-ray/GRB transient field
  
• 336 Optical observation of the X-ray/GRB transient SAX J0835.9+5118
  
• 335 Optical report on X-ray/GRB transient
  
• 334 Radio detection of X-ray/GRB transient
  
• 333 BeppoSAX: A new fast X-ray transient
  
• 332 GRB990510: Optical observations
  
• 331 GRB990510: Photometric and spectroscopic observations with the VLT
  
• 330 GRB990510: Optical linear polarization
  
• 329 GRB990510: Optical observations
  
• 328 GRB990510, VI observations
  
• 327 GRB990506, R band observations
  
• 326 GRB990510: X-ray afterglow
  
• 325 GRB990510: Optical observation
  
• 324 VLT spectrum of GRB990510
  
• 323 GRB990510: Broad Band Break
  
• 322 GRB990510: BATSE Observations
  
• 321 GRB990510: Optical observation
  
• 320 GRB990510, Optical Observations
  
• 319 GRB990510, BVI photometry
  
• 318 GRB990510, Optical observations
  
• 317 GRB990510: BeppoSAX/GRBM observations
  
• 316 GRB990510, Optical observations
  
• 315 GRB990510, Optical observations
  
• 314 GRB990510, Optical observations
  
• 313 GRB990510, Optical observations
  
• 312 Galactic extinction towards GRB 990510
  
• 311 GRB990510: NFI X-ray source
  
• 310 GRB990510, optical observations
  
• 309 IPN localization of GRB990510
  
• 308 GRB990506, Radio Observations
  
• 307 GRB990123, optical monitoring
  
• 306 GRB990506: BATSE Observations
  
• 305 GRB990506, optical observations
  
• 304 GRB990510: Final BeppoSAX-WFC Coordinates
  
• 303 GRB990506, Optical Observations
  
• 302 GRB990506, Optical observations
  
• 301 GRB990506, Optical observations
  
• 300 GRB990506, Optical observations
  

Circulars 199-299   99-01-23 to 99-05-07
Circulars 100-198   98-06-13 to 99-01-22
Circulars neg4-099   97-02-?? to 98-06-13